diff --git a/ci/dictionary.txt b/ci/dictionary.txt
index 92cb8e5096..565c934f13 100644
--- a/ci/dictionary.txt
+++ b/ci/dictionary.txt
@@ -460,6 +460,7 @@ retweet
 rewordings
 rint
 ripgrep
+RngExt
 Rumbul
 runnable
 runtime
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-02/Cargo.lock b/listings/ch02-guessing-game-tutorial/listing-02-02/Cargo.lock
index b3b58cc17f..6549b66a4a 100644
--- a/listings/ch02-guessing-game-tutorial/listing-02-02/Cargo.lock
+++ b/listings/ch02-guessing-game-tutorial/listing-02-02/Cargo.lock
@@ -2,139 +2,76 @@
 # It is not intended for manual editing.
 version = 4
 
-[[package]]
-name = "byteorder"
-version = "1.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
-
 [[package]]
 name = "cfg-if"
-version = "1.0.0"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
 
 [[package]]
-name = "getrandom"
-version = "0.2.15"
+name = "chacha20"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c4567c8db10ae91089c99af84c68c38da3ec2f087c3f82960bcdbf3656b6f4d7"
+checksum = "d524456ba66e72eb8b115ff89e01e497f8e6d11d78b70b1aa13c0fbd97540a81"
 dependencies = [
  "cfg-if",
- "libc",
- "wasi",
-]
-
-[[package]]
-name = "guessing_game"
-version = "0.1.0"
-dependencies = [
- "rand",
-]
-
-[[package]]
-name = "libc"
-version = "0.2.170"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "875b3680cb2f8f71bdcf9a30f38d48282f5d3c95cbf9b3fa57269bb5d5c06828"
-
-[[package]]
-name = "ppv-lite86"
-version = "0.2.20"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77957b295656769bb8ad2b6a6b09d897d94f05c41b069aede1fcdaa675eaea04"
-dependencies = [
- "zerocopy",
-]
-
-[[package]]
-name = "proc-macro2"
-version = "1.0.93"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "60946a68e5f9d28b0dc1c21bb8a97ee7d018a8b322fa57838ba31cc878e22d99"
-dependencies = [
- "unicode-ident",
-]
-
-[[package]]
-name = "quote"
-version = "1.0.38"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0e4dccaaaf89514f546c693ddc140f729f958c247918a13380cccc6078391acc"
-dependencies = [
- "proc-macro2",
+ "cpufeatures",
+ "rand_core",
 ]
 
 [[package]]
-name = "rand"
-version = "0.8.5"
+name = "cpufeatures"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
 dependencies = [
  "libc",
- "rand_chacha",
- "rand_core",
 ]
 
 [[package]]
-name = "rand_chacha"
-version = "0.3.1"
+name = "getrandom"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
+checksum = "300e883d756b2e4ec94e02791f39b04b522276138852cfc41d9fb7e904106099"
 dependencies = [
- "ppv-lite86",
+ "cfg-if",
+ "libc",
+ "r-efi",
  "rand_core",
 ]
 
 [[package]]
-name = "rand_core"
-version = "0.6.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
-dependencies = [
- "getrandom",
-]
-
-[[package]]
-name = "syn"
-version = "2.0.98"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "36147f1a48ae0ec2b5b3bc5b537d267457555a10dc06f3dbc8cb11ba3006d3b1"
+name = "guessing_game"
+version = "0.1.0"
 dependencies = [
- "proc-macro2",
- "quote",
- "unicode-ident",
+ "rand",
 ]
 
 [[package]]
-name = "unicode-ident"
-version = "1.0.17"
+name = "libc"
+version = "0.2.186"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "00e2473a93778eb0bad35909dff6a10d28e63f792f16ed15e404fca9d5eeedbe"
+checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66"
 
 [[package]]
-name = "wasi"
-version = "0.11.0+wasi-snapshot-preview1"
+name = "r-efi"
+version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
+checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
 
 [[package]]
-name = "zerocopy"
-version = "0.7.35"
+name = "rand"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b9b4fd18abc82b8136838da5d50bae7bdea537c574d8dc1a34ed098d6c166f0"
+checksum = "d2e8e8bcc7961af1fdac401278c6a831614941f6164ee3bf4ce61b7edb162207"
 dependencies = [
- "byteorder",
- "zerocopy-derive",
+ "chacha20",
+ "getrandom",
+ "rand_core",
 ]
 
 [[package]]
-name = "zerocopy-derive"
-version = "0.7.35"
+name = "rand_core"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
+checksum = "63b8176103e19a2643978565ca18b50549f6101881c443590420e4dc998a3c69"
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-02/Cargo.toml b/listings/ch02-guessing-game-tutorial/listing-02-02/Cargo.toml
index eba27a883c..22f02e1859 100644
--- a/listings/ch02-guessing-game-tutorial/listing-02-02/Cargo.toml
+++ b/listings/ch02-guessing-game-tutorial/listing-02-02/Cargo.toml
@@ -6,4 +6,4 @@ edition = "2024"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-rand = "0.8.5"
+rand = "0.10.1"
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-03/Cargo.lock b/listings/ch02-guessing-game-tutorial/listing-02-03/Cargo.lock
index 2ae9e459ea..d6e5bc8cda 100644
--- a/listings/ch02-guessing-game-tutorial/listing-02-03/Cargo.lock
+++ b/listings/ch02-guessing-game-tutorial/listing-02-03/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "cfg-if"
@@ -8,15 +8,36 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "chacha20"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d524456ba66e72eb8b115ff89e01e497f8e6d11d78b70b1aa13c0fbd97540a81"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "rand_core",
+]
+
+[[package]]
+name = "cpufeatures"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "getrandom"
-version = "0.2.2"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
+checksum = "300e883d756b2e4ec94e02791f39b04b522276138852cfc41d9fb7e904106099"
 dependencies = [
  "cfg-if",
  "libc",
- "wasi",
+ "r-efi",
+ "rand_core",
 ]
 
 [[package]]
@@ -28,48 +49,29 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.86"
+version = "0.2.186"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7282d924be3275cec7f6756ff4121987bc6481325397dde6ba3e7802b1a8b1c"
+checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66"
 
 [[package]]
-name = "ppv-lite86"
-version = "0.2.10"
+name = "r-efi"
+version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
+checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
 
 [[package]]
 name = "rand"
-version = "0.8.5"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+checksum = "d2e8e8bcc7961af1fdac401278c6a831614941f6164ee3bf4ce61b7edb162207"
 dependencies = [
- "libc",
- "rand_chacha",
- "rand_core",
-]
-
-[[package]]
-name = "rand_chacha"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e12735cf05c9e10bf21534da50a147b924d555dc7a547c42e6bb2d5b6017ae0d"
-dependencies = [
- "ppv-lite86",
+ "chacha20",
+ "getrandom",
  "rand_core",
 ]
 
 [[package]]
 name = "rand_core"
-version = "0.6.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34cf66eb183df1c5876e2dcf6b13d57340741e8dc255b48e40a26de954d06ae7"
-dependencies = [
- "getrandom",
-]
-
-[[package]]
-name = "wasi"
-version = "0.10.2+wasi-snapshot-preview1"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+checksum = "63b8176103e19a2643978565ca18b50549f6101881c443590420e4dc998a3c69"
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-03/Cargo.toml b/listings/ch02-guessing-game-tutorial/listing-02-03/Cargo.toml
index eba27a883c..22f02e1859 100644
--- a/listings/ch02-guessing-game-tutorial/listing-02-03/Cargo.toml
+++ b/listings/ch02-guessing-game-tutorial/listing-02-03/Cargo.toml
@@ -6,4 +6,4 @@ edition = "2024"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-rand = "0.8.5"
+rand = "0.10.1"
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-03/src/main.rs b/listings/ch02-guessing-game-tutorial/listing-02-03/src/main.rs
index 0ae11e3d41..c8ca5d2896 100644
--- a/listings/ch02-guessing-game-tutorial/listing-02-03/src/main.rs
+++ b/listings/ch02-guessing-game-tutorial/listing-02-03/src/main.rs
@@ -2,14 +2,14 @@
 use std::io;
 
 // ANCHOR: ch07-04
-use rand::Rng;
+use rand::prelude::*;
 
 fn main() {
     // ANCHOR_END: ch07-04
     println!("Guess the number!");
 
     // ANCHOR: ch07-04
-    let secret_number = rand::thread_rng().gen_range(1..=100);
+    let secret_number = rand::rng().random_range(1..=100);
     // ANCHOR_END: ch07-04
 
     println!("The secret number is: {secret_number}");
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-04/Cargo.lock b/listings/ch02-guessing-game-tutorial/listing-02-04/Cargo.lock
index 2ae9e459ea..d6e5bc8cda 100644
--- a/listings/ch02-guessing-game-tutorial/listing-02-04/Cargo.lock
+++ b/listings/ch02-guessing-game-tutorial/listing-02-04/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "cfg-if"
@@ -8,15 +8,36 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "chacha20"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d524456ba66e72eb8b115ff89e01e497f8e6d11d78b70b1aa13c0fbd97540a81"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "rand_core",
+]
+
+[[package]]
+name = "cpufeatures"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "getrandom"
-version = "0.2.2"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
+checksum = "300e883d756b2e4ec94e02791f39b04b522276138852cfc41d9fb7e904106099"
 dependencies = [
  "cfg-if",
  "libc",
- "wasi",
+ "r-efi",
+ "rand_core",
 ]
 
 [[package]]
@@ -28,48 +49,29 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.86"
+version = "0.2.186"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7282d924be3275cec7f6756ff4121987bc6481325397dde6ba3e7802b1a8b1c"
+checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66"
 
 [[package]]
-name = "ppv-lite86"
-version = "0.2.10"
+name = "r-efi"
+version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
+checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
 
 [[package]]
 name = "rand"
-version = "0.8.5"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+checksum = "d2e8e8bcc7961af1fdac401278c6a831614941f6164ee3bf4ce61b7edb162207"
 dependencies = [
- "libc",
- "rand_chacha",
- "rand_core",
-]
-
-[[package]]
-name = "rand_chacha"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e12735cf05c9e10bf21534da50a147b924d555dc7a547c42e6bb2d5b6017ae0d"
-dependencies = [
- "ppv-lite86",
+ "chacha20",
+ "getrandom",
  "rand_core",
 ]
 
 [[package]]
 name = "rand_core"
-version = "0.6.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34cf66eb183df1c5876e2dcf6b13d57340741e8dc255b48e40a26de954d06ae7"
-dependencies = [
- "getrandom",
-]
-
-[[package]]
-name = "wasi"
-version = "0.10.2+wasi-snapshot-preview1"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+checksum = "63b8176103e19a2643978565ca18b50549f6101881c443590420e4dc998a3c69"
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-04/Cargo.toml b/listings/ch02-guessing-game-tutorial/listing-02-04/Cargo.toml
index eba27a883c..22f02e1859 100644
--- a/listings/ch02-guessing-game-tutorial/listing-02-04/Cargo.toml
+++ b/listings/ch02-guessing-game-tutorial/listing-02-04/Cargo.toml
@@ -6,4 +6,4 @@ edition = "2024"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-rand = "0.8.5"
+rand = "0.10.1"
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-04/output.txt b/listings/ch02-guessing-game-tutorial/listing-02-04/output.txt
index c5a3cc629d..04fc54061c 100644
--- a/listings/ch02-guessing-game-tutorial/listing-02-04/output.txt
+++ b/listings/ch02-guessing-game-tutorial/listing-02-04/output.txt
@@ -1,11 +1,10 @@
 $ cargo build
-   Compiling libc v0.2.86
-   Compiling getrandom v0.2.2
+   Compiling libc v0.2.186
+   Compiling rand_core v0.10.1
    Compiling cfg-if v1.0.0
-   Compiling ppv-lite86 v0.2.10
-   Compiling rand_core v0.6.2
-   Compiling rand_chacha v0.3.0
-   Compiling rand v0.8.5
+   Compiling getrandom v0.4.3
+   Compiling chacha20 v0.10.1
+   Compiling rand v0.10.1
    Compiling guessing_game v0.1.0 (file:///projects/guessing_game)
 error[E0308]: mismatched types
   --> src/main.rs:23:21
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-04/src/main.rs b/listings/ch02-guessing-game-tutorial/listing-02-04/src/main.rs
index fae3c29c6f..7a2d9823d0 100644
--- a/listings/ch02-guessing-game-tutorial/listing-02-04/src/main.rs
+++ b/listings/ch02-guessing-game-tutorial/listing-02-04/src/main.rs
@@ -2,14 +2,14 @@
 use std::cmp::Ordering;
 use std::io;
 
-use rand::Rng;
+use rand::prelude::*;
 
 fn main() {
     // --snip--
     // ANCHOR_END: here
     println!("Guess the number!");
 
-    let secret_number = rand::thread_rng().gen_range(1..=100);
+    let secret_number = rand::rng().random_range(1..=100);
 
     println!("The secret number is: {secret_number}");
 
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-05/Cargo.lock b/listings/ch02-guessing-game-tutorial/listing-02-05/Cargo.lock
index 2ae9e459ea..d6e5bc8cda 100644
--- a/listings/ch02-guessing-game-tutorial/listing-02-05/Cargo.lock
+++ b/listings/ch02-guessing-game-tutorial/listing-02-05/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "cfg-if"
@@ -8,15 +8,36 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "chacha20"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d524456ba66e72eb8b115ff89e01e497f8e6d11d78b70b1aa13c0fbd97540a81"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "rand_core",
+]
+
+[[package]]
+name = "cpufeatures"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "getrandom"
-version = "0.2.2"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
+checksum = "300e883d756b2e4ec94e02791f39b04b522276138852cfc41d9fb7e904106099"
 dependencies = [
  "cfg-if",
  "libc",
- "wasi",
+ "r-efi",
+ "rand_core",
 ]
 
 [[package]]
@@ -28,48 +49,29 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.86"
+version = "0.2.186"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7282d924be3275cec7f6756ff4121987bc6481325397dde6ba3e7802b1a8b1c"
+checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66"
 
 [[package]]
-name = "ppv-lite86"
-version = "0.2.10"
+name = "r-efi"
+version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
+checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
 
 [[package]]
 name = "rand"
-version = "0.8.5"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+checksum = "d2e8e8bcc7961af1fdac401278c6a831614941f6164ee3bf4ce61b7edb162207"
 dependencies = [
- "libc",
- "rand_chacha",
- "rand_core",
-]
-
-[[package]]
-name = "rand_chacha"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e12735cf05c9e10bf21534da50a147b924d555dc7a547c42e6bb2d5b6017ae0d"
-dependencies = [
- "ppv-lite86",
+ "chacha20",
+ "getrandom",
  "rand_core",
 ]
 
 [[package]]
 name = "rand_core"
-version = "0.6.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34cf66eb183df1c5876e2dcf6b13d57340741e8dc255b48e40a26de954d06ae7"
-dependencies = [
- "getrandom",
-]
-
-[[package]]
-name = "wasi"
-version = "0.10.2+wasi-snapshot-preview1"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+checksum = "63b8176103e19a2643978565ca18b50549f6101881c443590420e4dc998a3c69"
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-05/Cargo.toml b/listings/ch02-guessing-game-tutorial/listing-02-05/Cargo.toml
index eba27a883c..22f02e1859 100644
--- a/listings/ch02-guessing-game-tutorial/listing-02-05/Cargo.toml
+++ b/listings/ch02-guessing-game-tutorial/listing-02-05/Cargo.toml
@@ -6,4 +6,4 @@ edition = "2024"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-rand = "0.8.5"
+rand = "0.10.1"
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-05/src/main.rs b/listings/ch02-guessing-game-tutorial/listing-02-05/src/main.rs
index 0ca4853d49..4b35503597 100644
--- a/listings/ch02-guessing-game-tutorial/listing-02-05/src/main.rs
+++ b/listings/ch02-guessing-game-tutorial/listing-02-05/src/main.rs
@@ -1,12 +1,12 @@
 use std::cmp::Ordering;
 use std::io;
 
-use rand::Rng;
+use rand::prelude::*;
 
 fn main() {
     println!("Guess the number!");
 
-    let secret_number = rand::thread_rng().gen_range(1..=100);
+    let secret_number = rand::rng().random_range(1..=100);
 
     println!("The secret number is: {secret_number}");
 
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-06/Cargo.lock b/listings/ch02-guessing-game-tutorial/listing-02-06/Cargo.lock
index 2ae9e459ea..d6e5bc8cda 100644
--- a/listings/ch02-guessing-game-tutorial/listing-02-06/Cargo.lock
+++ b/listings/ch02-guessing-game-tutorial/listing-02-06/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "cfg-if"
@@ -8,15 +8,36 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "chacha20"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d524456ba66e72eb8b115ff89e01e497f8e6d11d78b70b1aa13c0fbd97540a81"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "rand_core",
+]
+
+[[package]]
+name = "cpufeatures"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "getrandom"
-version = "0.2.2"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
+checksum = "300e883d756b2e4ec94e02791f39b04b522276138852cfc41d9fb7e904106099"
 dependencies = [
  "cfg-if",
  "libc",
- "wasi",
+ "r-efi",
+ "rand_core",
 ]
 
 [[package]]
@@ -28,48 +49,29 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.86"
+version = "0.2.186"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7282d924be3275cec7f6756ff4121987bc6481325397dde6ba3e7802b1a8b1c"
+checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66"
 
 [[package]]
-name = "ppv-lite86"
-version = "0.2.10"
+name = "r-efi"
+version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
+checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
 
 [[package]]
 name = "rand"
-version = "0.8.5"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+checksum = "d2e8e8bcc7961af1fdac401278c6a831614941f6164ee3bf4ce61b7edb162207"
 dependencies = [
- "libc",
- "rand_chacha",
- "rand_core",
-]
-
-[[package]]
-name = "rand_chacha"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e12735cf05c9e10bf21534da50a147b924d555dc7a547c42e6bb2d5b6017ae0d"
-dependencies = [
- "ppv-lite86",
+ "chacha20",
+ "getrandom",
  "rand_core",
 ]
 
 [[package]]
 name = "rand_core"
-version = "0.6.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34cf66eb183df1c5876e2dcf6b13d57340741e8dc255b48e40a26de954d06ae7"
-dependencies = [
- "getrandom",
-]
-
-[[package]]
-name = "wasi"
-version = "0.10.2+wasi-snapshot-preview1"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+checksum = "63b8176103e19a2643978565ca18b50549f6101881c443590420e4dc998a3c69"
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-06/Cargo.toml b/listings/ch02-guessing-game-tutorial/listing-02-06/Cargo.toml
index eba27a883c..22f02e1859 100644
--- a/listings/ch02-guessing-game-tutorial/listing-02-06/Cargo.toml
+++ b/listings/ch02-guessing-game-tutorial/listing-02-06/Cargo.toml
@@ -6,4 +6,4 @@ edition = "2024"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-rand = "0.8.5"
+rand = "0.10.1"
diff --git a/listings/ch02-guessing-game-tutorial/listing-02-06/src/main.rs b/listings/ch02-guessing-game-tutorial/listing-02-06/src/main.rs
index bd728b4dc2..14f6c9af7b 100644
--- a/listings/ch02-guessing-game-tutorial/listing-02-06/src/main.rs
+++ b/listings/ch02-guessing-game-tutorial/listing-02-06/src/main.rs
@@ -1,12 +1,12 @@
 use std::cmp::Ordering;
 use std::io;
 
-use rand::Rng;
+use rand::prelude::*;
 
 fn main() {
     println!("Guess the number!");
 
-    let secret_number = rand::thread_rng().gen_range(1..=100);
+    let secret_number = rand::rng().random_range(1..=100);
 
     loop {
         println!("Please input your guess.");
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/Cargo.lock b/listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/Cargo.lock
index 2ae9e459ea..d6e5bc8cda 100644
--- a/listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/Cargo.lock
+++ b/listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "cfg-if"
@@ -8,15 +8,36 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "chacha20"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d524456ba66e72eb8b115ff89e01e497f8e6d11d78b70b1aa13c0fbd97540a81"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "rand_core",
+]
+
+[[package]]
+name = "cpufeatures"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "getrandom"
-version = "0.2.2"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
+checksum = "300e883d756b2e4ec94e02791f39b04b522276138852cfc41d9fb7e904106099"
 dependencies = [
  "cfg-if",
  "libc",
- "wasi",
+ "r-efi",
+ "rand_core",
 ]
 
 [[package]]
@@ -28,48 +49,29 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.86"
+version = "0.2.186"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7282d924be3275cec7f6756ff4121987bc6481325397dde6ba3e7802b1a8b1c"
+checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66"
 
 [[package]]
-name = "ppv-lite86"
-version = "0.2.10"
+name = "r-efi"
+version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
+checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
 
 [[package]]
 name = "rand"
-version = "0.8.5"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+checksum = "d2e8e8bcc7961af1fdac401278c6a831614941f6164ee3bf4ce61b7edb162207"
 dependencies = [
- "libc",
- "rand_chacha",
- "rand_core",
-]
-
-[[package]]
-name = "rand_chacha"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e12735cf05c9e10bf21534da50a147b924d555dc7a547c42e6bb2d5b6017ae0d"
-dependencies = [
- "ppv-lite86",
+ "chacha20",
+ "getrandom",
  "rand_core",
 ]
 
 [[package]]
 name = "rand_core"
-version = "0.6.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34cf66eb183df1c5876e2dcf6b13d57340741e8dc255b48e40a26de954d06ae7"
-dependencies = [
- "getrandom",
-]
-
-[[package]]
-name = "wasi"
-version = "0.10.2+wasi-snapshot-preview1"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+checksum = "63b8176103e19a2643978565ca18b50549f6101881c443590420e4dc998a3c69"
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/Cargo.toml b/listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/Cargo.toml
index eba27a883c..22f02e1859 100644
--- a/listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/Cargo.toml
+++ b/listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/Cargo.toml
@@ -6,4 +6,4 @@ edition = "2024"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-rand = "0.8.5"
+rand = "0.10.1"
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/src/main.rs b/listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/src/main.rs
index e4ec0c9af1..e74e4f0f29 100644
--- a/listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/src/main.rs
+++ b/listings/ch02-guessing-game-tutorial/no-listing-03-convert-string-to-number/src/main.rs
@@ -1,12 +1,12 @@
 use std::cmp::Ordering;
 use std::io;
 
-use rand::Rng;
+use rand::prelude::*;
 
 fn main() {
     println!("Guess the number!");
 
-    let secret_number = rand::thread_rng().gen_range(1..=100);
+    let secret_number = rand::rng().random_range(1..=100);
 
     println!("The secret number is: {secret_number}");
 
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-04-looping/Cargo.lock b/listings/ch02-guessing-game-tutorial/no-listing-04-looping/Cargo.lock
index 2ae9e459ea..d6e5bc8cda 100644
--- a/listings/ch02-guessing-game-tutorial/no-listing-04-looping/Cargo.lock
+++ b/listings/ch02-guessing-game-tutorial/no-listing-04-looping/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "cfg-if"
@@ -8,15 +8,36 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "chacha20"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d524456ba66e72eb8b115ff89e01e497f8e6d11d78b70b1aa13c0fbd97540a81"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "rand_core",
+]
+
+[[package]]
+name = "cpufeatures"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "getrandom"
-version = "0.2.2"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
+checksum = "300e883d756b2e4ec94e02791f39b04b522276138852cfc41d9fb7e904106099"
 dependencies = [
  "cfg-if",
  "libc",
- "wasi",
+ "r-efi",
+ "rand_core",
 ]
 
 [[package]]
@@ -28,48 +49,29 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.86"
+version = "0.2.186"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7282d924be3275cec7f6756ff4121987bc6481325397dde6ba3e7802b1a8b1c"
+checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66"
 
 [[package]]
-name = "ppv-lite86"
-version = "0.2.10"
+name = "r-efi"
+version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
+checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
 
 [[package]]
 name = "rand"
-version = "0.8.5"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+checksum = "d2e8e8bcc7961af1fdac401278c6a831614941f6164ee3bf4ce61b7edb162207"
 dependencies = [
- "libc",
- "rand_chacha",
- "rand_core",
-]
-
-[[package]]
-name = "rand_chacha"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e12735cf05c9e10bf21534da50a147b924d555dc7a547c42e6bb2d5b6017ae0d"
-dependencies = [
- "ppv-lite86",
+ "chacha20",
+ "getrandom",
  "rand_core",
 ]
 
 [[package]]
 name = "rand_core"
-version = "0.6.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34cf66eb183df1c5876e2dcf6b13d57340741e8dc255b48e40a26de954d06ae7"
-dependencies = [
- "getrandom",
-]
-
-[[package]]
-name = "wasi"
-version = "0.10.2+wasi-snapshot-preview1"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+checksum = "63b8176103e19a2643978565ca18b50549f6101881c443590420e4dc998a3c69"
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-04-looping/Cargo.toml b/listings/ch02-guessing-game-tutorial/no-listing-04-looping/Cargo.toml
index eba27a883c..22f02e1859 100644
--- a/listings/ch02-guessing-game-tutorial/no-listing-04-looping/Cargo.toml
+++ b/listings/ch02-guessing-game-tutorial/no-listing-04-looping/Cargo.toml
@@ -6,4 +6,4 @@ edition = "2024"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-rand = "0.8.5"
+rand = "0.10.1"
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-04-looping/src/main.rs b/listings/ch02-guessing-game-tutorial/no-listing-04-looping/src/main.rs
index 934be44446..cbcac58710 100644
--- a/listings/ch02-guessing-game-tutorial/no-listing-04-looping/src/main.rs
+++ b/listings/ch02-guessing-game-tutorial/no-listing-04-looping/src/main.rs
@@ -1,12 +1,12 @@
 use std::cmp::Ordering;
 use std::io;
 
-use rand::Rng;
+use rand::prelude::*;
 
 fn main() {
     println!("Guess the number!");
 
-    let secret_number = rand::thread_rng().gen_range(1..=100);
+    let secret_number = rand::rng().random_range(1..=100);
 
     // ANCHOR: here
     // --snip--
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-05-quitting/Cargo.lock b/listings/ch02-guessing-game-tutorial/no-listing-05-quitting/Cargo.lock
index 2ae9e459ea..d6e5bc8cda 100644
--- a/listings/ch02-guessing-game-tutorial/no-listing-05-quitting/Cargo.lock
+++ b/listings/ch02-guessing-game-tutorial/no-listing-05-quitting/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "cfg-if"
@@ -8,15 +8,36 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "chacha20"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d524456ba66e72eb8b115ff89e01e497f8e6d11d78b70b1aa13c0fbd97540a81"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "rand_core",
+]
+
+[[package]]
+name = "cpufeatures"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "getrandom"
-version = "0.2.2"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
+checksum = "300e883d756b2e4ec94e02791f39b04b522276138852cfc41d9fb7e904106099"
 dependencies = [
  "cfg-if",
  "libc",
- "wasi",
+ "r-efi",
+ "rand_core",
 ]
 
 [[package]]
@@ -28,48 +49,29 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.86"
+version = "0.2.186"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7282d924be3275cec7f6756ff4121987bc6481325397dde6ba3e7802b1a8b1c"
+checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66"
 
 [[package]]
-name = "ppv-lite86"
-version = "0.2.10"
+name = "r-efi"
+version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
+checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
 
 [[package]]
 name = "rand"
-version = "0.8.5"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+checksum = "d2e8e8bcc7961af1fdac401278c6a831614941f6164ee3bf4ce61b7edb162207"
 dependencies = [
- "libc",
- "rand_chacha",
- "rand_core",
-]
-
-[[package]]
-name = "rand_chacha"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e12735cf05c9e10bf21534da50a147b924d555dc7a547c42e6bb2d5b6017ae0d"
-dependencies = [
- "ppv-lite86",
+ "chacha20",
+ "getrandom",
  "rand_core",
 ]
 
 [[package]]
 name = "rand_core"
-version = "0.6.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34cf66eb183df1c5876e2dcf6b13d57340741e8dc255b48e40a26de954d06ae7"
-dependencies = [
- "getrandom",
-]
-
-[[package]]
-name = "wasi"
-version = "0.10.2+wasi-snapshot-preview1"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+checksum = "63b8176103e19a2643978565ca18b50549f6101881c443590420e4dc998a3c69"
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-05-quitting/Cargo.toml b/listings/ch02-guessing-game-tutorial/no-listing-05-quitting/Cargo.toml
index eba27a883c..22f02e1859 100644
--- a/listings/ch02-guessing-game-tutorial/no-listing-05-quitting/Cargo.toml
+++ b/listings/ch02-guessing-game-tutorial/no-listing-05-quitting/Cargo.toml
@@ -6,4 +6,4 @@ edition = "2024"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-rand = "0.8.5"
+rand = "0.10.1"
diff --git a/listings/ch02-guessing-game-tutorial/no-listing-05-quitting/src/main.rs b/listings/ch02-guessing-game-tutorial/no-listing-05-quitting/src/main.rs
index 77cbc938e8..f8d2860029 100644
--- a/listings/ch02-guessing-game-tutorial/no-listing-05-quitting/src/main.rs
+++ b/listings/ch02-guessing-game-tutorial/no-listing-05-quitting/src/main.rs
@@ -1,12 +1,12 @@
 use std::cmp::Ordering;
 use std::io;
 
-use rand::Rng;
+use rand::prelude::*;
 
 fn main() {
     println!("Guess the number!");
 
-    let secret_number = rand::thread_rng().gen_range(1..=100);
+    let secret_number = rand::rng().random_range(1..=100);
 
     println!("The secret number is: {secret_number}");
 
diff --git a/listings/ch07-managing-growing-projects/listing-07-18/Cargo.lock b/listings/ch07-managing-growing-projects/listing-07-18/Cargo.lock
index 2ae9e459ea..d6e5bc8cda 100644
--- a/listings/ch07-managing-growing-projects/listing-07-18/Cargo.lock
+++ b/listings/ch07-managing-growing-projects/listing-07-18/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "cfg-if"
@@ -8,15 +8,36 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "chacha20"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d524456ba66e72eb8b115ff89e01e497f8e6d11d78b70b1aa13c0fbd97540a81"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "rand_core",
+]
+
+[[package]]
+name = "cpufeatures"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "getrandom"
-version = "0.2.2"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
+checksum = "300e883d756b2e4ec94e02791f39b04b522276138852cfc41d9fb7e904106099"
 dependencies = [
  "cfg-if",
  "libc",
- "wasi",
+ "r-efi",
+ "rand_core",
 ]
 
 [[package]]
@@ -28,48 +49,29 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.86"
+version = "0.2.186"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7282d924be3275cec7f6756ff4121987bc6481325397dde6ba3e7802b1a8b1c"
+checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66"
 
 [[package]]
-name = "ppv-lite86"
-version = "0.2.10"
+name = "r-efi"
+version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
+checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
 
 [[package]]
 name = "rand"
-version = "0.8.5"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+checksum = "d2e8e8bcc7961af1fdac401278c6a831614941f6164ee3bf4ce61b7edb162207"
 dependencies = [
- "libc",
- "rand_chacha",
- "rand_core",
-]
-
-[[package]]
-name = "rand_chacha"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e12735cf05c9e10bf21534da50a147b924d555dc7a547c42e6bb2d5b6017ae0d"
-dependencies = [
- "ppv-lite86",
+ "chacha20",
+ "getrandom",
  "rand_core",
 ]
 
 [[package]]
 name = "rand_core"
-version = "0.6.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34cf66eb183df1c5876e2dcf6b13d57340741e8dc255b48e40a26de954d06ae7"
-dependencies = [
- "getrandom",
-]
-
-[[package]]
-name = "wasi"
-version = "0.10.2+wasi-snapshot-preview1"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+checksum = "63b8176103e19a2643978565ca18b50549f6101881c443590420e4dc998a3c69"
diff --git a/listings/ch07-managing-growing-projects/listing-07-18/Cargo.toml b/listings/ch07-managing-growing-projects/listing-07-18/Cargo.toml
index 9f9c4acb96..29e22e9a67 100644
--- a/listings/ch07-managing-growing-projects/listing-07-18/Cargo.toml
+++ b/listings/ch07-managing-growing-projects/listing-07-18/Cargo.toml
@@ -4,4 +4,4 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-rand = "0.8.5"
+rand = "0.10.1"
diff --git a/listings/ch07-managing-growing-projects/listing-07-18/src/main.rs b/listings/ch07-managing-growing-projects/listing-07-18/src/main.rs
index 2f69412a4c..0e761487b2 100644
--- a/listings/ch07-managing-growing-projects/listing-07-18/src/main.rs
+++ b/listings/ch07-managing-growing-projects/listing-07-18/src/main.rs
@@ -1,4 +1,4 @@
-use rand::Rng;
+use rand::prelude::*;
 // ANCHOR: here
 // --snip--
 use std::{cmp::Ordering, io};
@@ -8,7 +8,7 @@ use std::{cmp::Ordering, io};
 fn main() {
     println!("Guess the number!");
 
-    let secret_number = rand::thread_rng().gen_range(1..=100);
+    let secret_number = rand::rng().random_range(1..=100);
 
     println!("The secret number is: {secret_number}");
 
diff --git a/listings/ch07-managing-growing-projects/no-listing-01-use-std-unnested/Cargo.lock b/listings/ch07-managing-growing-projects/no-listing-01-use-std-unnested/Cargo.lock
index 2ae9e459ea..d6e5bc8cda 100644
--- a/listings/ch07-managing-growing-projects/no-listing-01-use-std-unnested/Cargo.lock
+++ b/listings/ch07-managing-growing-projects/no-listing-01-use-std-unnested/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "cfg-if"
@@ -8,15 +8,36 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "chacha20"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d524456ba66e72eb8b115ff89e01e497f8e6d11d78b70b1aa13c0fbd97540a81"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "rand_core",
+]
+
+[[package]]
+name = "cpufeatures"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "getrandom"
-version = "0.2.2"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
+checksum = "300e883d756b2e4ec94e02791f39b04b522276138852cfc41d9fb7e904106099"
 dependencies = [
  "cfg-if",
  "libc",
- "wasi",
+ "r-efi",
+ "rand_core",
 ]
 
 [[package]]
@@ -28,48 +49,29 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.86"
+version = "0.2.186"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7282d924be3275cec7f6756ff4121987bc6481325397dde6ba3e7802b1a8b1c"
+checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66"
 
 [[package]]
-name = "ppv-lite86"
-version = "0.2.10"
+name = "r-efi"
+version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
+checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
 
 [[package]]
 name = "rand"
-version = "0.8.5"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+checksum = "d2e8e8bcc7961af1fdac401278c6a831614941f6164ee3bf4ce61b7edb162207"
 dependencies = [
- "libc",
- "rand_chacha",
- "rand_core",
-]
-
-[[package]]
-name = "rand_chacha"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e12735cf05c9e10bf21534da50a147b924d555dc7a547c42e6bb2d5b6017ae0d"
-dependencies = [
- "ppv-lite86",
+ "chacha20",
+ "getrandom",
  "rand_core",
 ]
 
 [[package]]
 name = "rand_core"
-version = "0.6.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34cf66eb183df1c5876e2dcf6b13d57340741e8dc255b48e40a26de954d06ae7"
-dependencies = [
- "getrandom",
-]
-
-[[package]]
-name = "wasi"
-version = "0.10.2+wasi-snapshot-preview1"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+checksum = "63b8176103e19a2643978565ca18b50549f6101881c443590420e4dc998a3c69"
diff --git a/listings/ch07-managing-growing-projects/no-listing-01-use-std-unnested/Cargo.toml b/listings/ch07-managing-growing-projects/no-listing-01-use-std-unnested/Cargo.toml
index eba27a883c..22f02e1859 100644
--- a/listings/ch07-managing-growing-projects/no-listing-01-use-std-unnested/Cargo.toml
+++ b/listings/ch07-managing-growing-projects/no-listing-01-use-std-unnested/Cargo.toml
@@ -6,4 +6,4 @@ edition = "2024"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-rand = "0.8.5"
+rand = "0.10.1"
diff --git a/listings/ch07-managing-growing-projects/no-listing-01-use-std-unnested/src/main.rs b/listings/ch07-managing-growing-projects/no-listing-01-use-std-unnested/src/main.rs
index 3a02c99633..fcdf70fc66 100644
--- a/listings/ch07-managing-growing-projects/no-listing-01-use-std-unnested/src/main.rs
+++ b/listings/ch07-managing-growing-projects/no-listing-01-use-std-unnested/src/main.rs
@@ -1,4 +1,3 @@
-use rand::Rng;
 // ANCHOR: here
 // --snip--
 use std::cmp::Ordering;
@@ -6,10 +5,12 @@ use std::io;
 // --snip--
 // ANCHOR_END: here
 
+use rand::prelude::*;
+
 fn main() {
     println!("Guess the number!");
 
-    let secret_number = rand::thread_rng().gen_range(1..=100);
+    let secret_number = rand::rng().random_range(1..=100);
 
     println!("The secret number is: {secret_number}");
 
diff --git a/listings/ch09-error-handling/listing-09-13/Cargo.lock b/listings/ch09-error-handling/listing-09-13/Cargo.lock
index 2ae9e459ea..d6e5bc8cda 100644
--- a/listings/ch09-error-handling/listing-09-13/Cargo.lock
+++ b/listings/ch09-error-handling/listing-09-13/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "cfg-if"
@@ -8,15 +8,36 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "chacha20"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d524456ba66e72eb8b115ff89e01e497f8e6d11d78b70b1aa13c0fbd97540a81"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "rand_core",
+]
+
+[[package]]
+name = "cpufeatures"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "getrandom"
-version = "0.2.2"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
+checksum = "300e883d756b2e4ec94e02791f39b04b522276138852cfc41d9fb7e904106099"
 dependencies = [
  "cfg-if",
  "libc",
- "wasi",
+ "r-efi",
+ "rand_core",
 ]
 
 [[package]]
@@ -28,48 +49,29 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.86"
+version = "0.2.186"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7282d924be3275cec7f6756ff4121987bc6481325397dde6ba3e7802b1a8b1c"
+checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66"
 
 [[package]]
-name = "ppv-lite86"
-version = "0.2.10"
+name = "r-efi"
+version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
+checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
 
 [[package]]
 name = "rand"
-version = "0.8.5"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+checksum = "d2e8e8bcc7961af1fdac401278c6a831614941f6164ee3bf4ce61b7edb162207"
 dependencies = [
- "libc",
- "rand_chacha",
- "rand_core",
-]
-
-[[package]]
-name = "rand_chacha"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e12735cf05c9e10bf21534da50a147b924d555dc7a547c42e6bb2d5b6017ae0d"
-dependencies = [
- "ppv-lite86",
+ "chacha20",
+ "getrandom",
  "rand_core",
 ]
 
 [[package]]
 name = "rand_core"
-version = "0.6.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34cf66eb183df1c5876e2dcf6b13d57340741e8dc255b48e40a26de954d06ae7"
-dependencies = [
- "getrandom",
-]
-
-[[package]]
-name = "wasi"
-version = "0.10.2+wasi-snapshot-preview1"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+checksum = "63b8176103e19a2643978565ca18b50549f6101881c443590420e4dc998a3c69"
diff --git a/listings/ch09-error-handling/listing-09-13/Cargo.toml b/listings/ch09-error-handling/listing-09-13/Cargo.toml
index 9f9c4acb96..29e22e9a67 100644
--- a/listings/ch09-error-handling/listing-09-13/Cargo.toml
+++ b/listings/ch09-error-handling/listing-09-13/Cargo.toml
@@ -4,4 +4,4 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-rand = "0.8.5"
+rand = "0.10.1"
diff --git a/listings/ch09-error-handling/listing-09-13/src/main.rs b/listings/ch09-error-handling/listing-09-13/src/main.rs
index 6c3e963450..781c885d5f 100644
--- a/listings/ch09-error-handling/listing-09-13/src/main.rs
+++ b/listings/ch09-error-handling/listing-09-13/src/main.rs
@@ -1,14 +1,15 @@
 use guessing_game::Guess;
-use rand::Rng;
 use std::cmp::Ordering;
 use std::io;
 
+use rand::prelude::*;
+
 mod guessing_game;
 
 fn main() {
     println!("Guess the number!");
 
-    let secret_number = rand::thread_rng().gen_range(1..=100);
+    let secret_number = rand::rng().random_range(1..=100);
 
     loop {
         println!("Please input your guess.");
diff --git a/listings/ch09-error-handling/no-listing-09-guess-out-of-range/Cargo.lock b/listings/ch09-error-handling/no-listing-09-guess-out-of-range/Cargo.lock
index 2ae9e459ea..d6e5bc8cda 100644
--- a/listings/ch09-error-handling/no-listing-09-guess-out-of-range/Cargo.lock
+++ b/listings/ch09-error-handling/no-listing-09-guess-out-of-range/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "cfg-if"
@@ -8,15 +8,36 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "chacha20"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d524456ba66e72eb8b115ff89e01e497f8e6d11d78b70b1aa13c0fbd97540a81"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "rand_core",
+]
+
+[[package]]
+name = "cpufeatures"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "getrandom"
-version = "0.2.2"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
+checksum = "300e883d756b2e4ec94e02791f39b04b522276138852cfc41d9fb7e904106099"
 dependencies = [
  "cfg-if",
  "libc",
- "wasi",
+ "r-efi",
+ "rand_core",
 ]
 
 [[package]]
@@ -28,48 +49,29 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.86"
+version = "0.2.186"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7282d924be3275cec7f6756ff4121987bc6481325397dde6ba3e7802b1a8b1c"
+checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66"
 
 [[package]]
-name = "ppv-lite86"
-version = "0.2.10"
+name = "r-efi"
+version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
+checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
 
 [[package]]
 name = "rand"
-version = "0.8.5"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+checksum = "d2e8e8bcc7961af1fdac401278c6a831614941f6164ee3bf4ce61b7edb162207"
 dependencies = [
- "libc",
- "rand_chacha",
- "rand_core",
-]
-
-[[package]]
-name = "rand_chacha"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e12735cf05c9e10bf21534da50a147b924d555dc7a547c42e6bb2d5b6017ae0d"
-dependencies = [
- "ppv-lite86",
+ "chacha20",
+ "getrandom",
  "rand_core",
 ]
 
 [[package]]
 name = "rand_core"
-version = "0.6.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34cf66eb183df1c5876e2dcf6b13d57340741e8dc255b48e40a26de954d06ae7"
-dependencies = [
- "getrandom",
-]
-
-[[package]]
-name = "wasi"
-version = "0.10.2+wasi-snapshot-preview1"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+checksum = "63b8176103e19a2643978565ca18b50549f6101881c443590420e4dc998a3c69"
diff --git a/listings/ch09-error-handling/no-listing-09-guess-out-of-range/Cargo.toml b/listings/ch09-error-handling/no-listing-09-guess-out-of-range/Cargo.toml
index 9f9c4acb96..29e22e9a67 100644
--- a/listings/ch09-error-handling/no-listing-09-guess-out-of-range/Cargo.toml
+++ b/listings/ch09-error-handling/no-listing-09-guess-out-of-range/Cargo.toml
@@ -4,4 +4,4 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-rand = "0.8.5"
+rand = "0.10.1"
diff --git a/listings/ch09-error-handling/no-listing-09-guess-out-of-range/src/main.rs b/listings/ch09-error-handling/no-listing-09-guess-out-of-range/src/main.rs
index fc22cbc5ef..cb20b7b6e0 100644
--- a/listings/ch09-error-handling/no-listing-09-guess-out-of-range/src/main.rs
+++ b/listings/ch09-error-handling/no-listing-09-guess-out-of-range/src/main.rs
@@ -1,11 +1,12 @@
-use rand::Rng;
 use std::cmp::Ordering;
 use std::io;
 
+use rand::prelude::*;
+
 fn main() {
     println!("Guess the number!");
 
-    let secret_number = rand::thread_rng().gen_range(1..=100);
+    let secret_number = rand::rng().random_range(1..=100);
 
     // ANCHOR: here
     loop {
diff --git a/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/Cargo.lock b/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/Cargo.lock
index bf6974b580..dad258fc6b 100644
--- a/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/Cargo.lock
+++ b/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "add_one"
@@ -23,60 +23,62 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
-name = "getrandom"
-version = "0.2.2"
+name = "chacha20"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
+checksum = "d524456ba66e72eb8b115ff89e01e497f8e6d11d78b70b1aa13c0fbd97540a81"
 dependencies = [
  "cfg-if",
- "libc",
- "wasi",
+ "cpufeatures",
+ "rand_core",
 ]
 
 [[package]]
-name = "libc"
-version = "0.2.86"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7282d924be3275cec7f6756ff4121987bc6481325397dde6ba3e7802b1a8b1c"
-
-[[package]]
-name = "ppv-lite86"
-version = "0.2.10"
+name = "cpufeatures"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
+checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
+dependencies = [
+ "libc",
+]
 
 [[package]]
-name = "rand"
-version = "0.8.5"
+name = "getrandom"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+checksum = "300e883d756b2e4ec94e02791f39b04b522276138852cfc41d9fb7e904106099"
 dependencies = [
+ "cfg-if",
  "libc",
- "rand_chacha",
+ "r-efi",
  "rand_core",
 ]
 
 [[package]]
-name = "rand_chacha"
-version = "0.3.0"
+name = "libc"
+version = "0.2.186"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e12735cf05c9e10bf21534da50a147b924d555dc7a547c42e6bb2d5b6017ae0d"
-dependencies = [
- "ppv-lite86",
- "rand_core",
-]
+checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66"
 
 [[package]]
-name = "rand_core"
-version = "0.6.2"
+name = "r-efi"
+version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34cf66eb183df1c5876e2dcf6b13d57340741e8dc255b48e40a26de954d06ae7"
+checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
+
+[[package]]
+name = "rand"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2e8e8bcc7961af1fdac401278c6a831614941f6164ee3bf4ce61b7edb162207"
 dependencies = [
+ "chacha20",
  "getrandom",
+ "rand_core",
 ]
 
 [[package]]
-name = "wasi"
-version = "0.10.2+wasi-snapshot-preview1"
+name = "rand_core"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+checksum = "63b8176103e19a2643978565ca18b50549f6101881c443590420e4dc998a3c69"
diff --git a/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/add_one/Cargo.toml b/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/add_one/Cargo.toml
index d399d96e7b..5db60e1166 100644
--- a/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/add_one/Cargo.toml
+++ b/listings/ch14-more-about-cargo/no-listing-03-workspace-with-external-dependency/add/add_one/Cargo.toml
@@ -4,4 +4,4 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-rand = "0.8.5"
+rand = "0.10.1"
diff --git a/listings/ch14-more-about-cargo/output-only-03-use-rand/add/Cargo.lock b/listings/ch14-more-about-cargo/output-only-03-use-rand/add/Cargo.lock
index bf6974b580..dad258fc6b 100644
--- a/listings/ch14-more-about-cargo/output-only-03-use-rand/add/Cargo.lock
+++ b/listings/ch14-more-about-cargo/output-only-03-use-rand/add/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "add_one"
@@ -23,60 +23,62 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
-name = "getrandom"
-version = "0.2.2"
+name = "chacha20"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
+checksum = "d524456ba66e72eb8b115ff89e01e497f8e6d11d78b70b1aa13c0fbd97540a81"
 dependencies = [
  "cfg-if",
- "libc",
- "wasi",
+ "cpufeatures",
+ "rand_core",
 ]
 
 [[package]]
-name = "libc"
-version = "0.2.86"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7282d924be3275cec7f6756ff4121987bc6481325397dde6ba3e7802b1a8b1c"
-
-[[package]]
-name = "ppv-lite86"
-version = "0.2.10"
+name = "cpufeatures"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
+checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
+dependencies = [
+ "libc",
+]
 
 [[package]]
-name = "rand"
-version = "0.8.5"
+name = "getrandom"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+checksum = "300e883d756b2e4ec94e02791f39b04b522276138852cfc41d9fb7e904106099"
 dependencies = [
+ "cfg-if",
  "libc",
- "rand_chacha",
+ "r-efi",
  "rand_core",
 ]
 
 [[package]]
-name = "rand_chacha"
-version = "0.3.0"
+name = "libc"
+version = "0.2.186"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e12735cf05c9e10bf21534da50a147b924d555dc7a547c42e6bb2d5b6017ae0d"
-dependencies = [
- "ppv-lite86",
- "rand_core",
-]
+checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66"
 
 [[package]]
-name = "rand_core"
-version = "0.6.2"
+name = "r-efi"
+version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34cf66eb183df1c5876e2dcf6b13d57340741e8dc255b48e40a26de954d06ae7"
+checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
+
+[[package]]
+name = "rand"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2e8e8bcc7961af1fdac401278c6a831614941f6164ee3bf4ce61b7edb162207"
 dependencies = [
+ "chacha20",
  "getrandom",
+ "rand_core",
 ]
 
 [[package]]
-name = "wasi"
-version = "0.10.2+wasi-snapshot-preview1"
+name = "rand_core"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+checksum = "63b8176103e19a2643978565ca18b50549f6101881c443590420e4dc998a3c69"
diff --git a/listings/ch14-more-about-cargo/output-only-03-use-rand/add/add_one/Cargo.toml b/listings/ch14-more-about-cargo/output-only-03-use-rand/add/add_one/Cargo.toml
index d399d96e7b..5db60e1166 100644
--- a/listings/ch14-more-about-cargo/output-only-03-use-rand/add/add_one/Cargo.toml
+++ b/listings/ch14-more-about-cargo/output-only-03-use-rand/add/add_one/Cargo.toml
@@ -4,4 +4,4 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-rand = "0.8.5"
+rand = "0.10.1"
diff --git a/src/ch01-01-installation.md b/src/ch01-01-installation.md
index 39d8371a6c..a9e03f534a 100644
--- a/src/ch01-01-installation.md
+++ b/src/ch01-01-installation.md
@@ -158,10 +158,18 @@ or to have downloaded those dependencies ahead of time. To download the
 dependencies ahead of time, you can run the following commands. (We’ll explain
 what `cargo` is and what each of these commands does in detail later.)
 
+<!-- When updating the version of `rand` used, also update the version of
+`rand` used in these files so they all match:
+
+* ch02-00-guessing-game-tutorial.md
+* ch07-04-bringing-paths-into-scope-with-the-use-keyword.md
+* ch14-03-cargo-workspaces.md
+-->
+
 ```console
 $ cargo new get-dependencies
 $ cd get-dependencies
-$ cargo add rand@0.8.5 trpl@0.2.0
+$ cargo add rand@0.10.1 trpl@0.2.0
 ```
 
 This will cache the downloads for these packages so you will not need to
diff --git a/src/ch02-00-guessing-game-tutorial.md b/src/ch02-00-guessing-game-tutorial.md
index 3c590a1994..f118eb5455 100644
--- a/src/ch02-00-guessing-game-tutorial.md
+++ b/src/ch02-00-guessing-game-tutorial.md
@@ -345,6 +345,8 @@ this version number, or the code examples in this tutorial may not work:
 
 <!-- When updating the version of `rand` used, also update the version of
 `rand` used in these files so they all match:
+
+* ch01-01-installation.md
 * ch07-04-bringing-paths-into-scope-with-the-use-keyword.md
 * ch14-03-cargo-workspaces.md
 -->
@@ -359,15 +361,15 @@ In the _Cargo.toml_ file, everything that follows a header is part of that
 section that continues until another section starts. In `[dependencies]`, you
 tell Cargo which external crates your project depends on and which versions of
 those crates you require. In this case, we specify the `rand` crate with the
-semantic version specifier `0.8.5`. Cargo understands [Semantic
+semantic version specifier `0.10.1`. Cargo understands [Semantic
 Versioning][semver]<!-- ignore --> (sometimes called _SemVer_), which is a
-standard for writing version numbers. The specifier `0.8.5` is actually
-shorthand for `^0.8.5`, which means any version that is at least 0.8.5 but
-below 0.9.0.
+standard for writing version numbers. The specifier `0.10.1` is actually
+shorthand for `^0.10.1`, which means any version that is at least 0.10.1 but
+below 0.11.0.
 
 Cargo considers these versions to have public APIs compatible with version
-0.8.5, and this specification ensures that you’ll get the latest patch release
-that will still compile with the code in this chapter. Any version 0.9.0 or
+0.10.1, and this specification ensures that you’ll get the latest patch release
+that will still compile with the code in this chapter. Any version 0.11.0 or
 greater is not guaranteed to have the same API as what the following examples
 use.
 
@@ -384,25 +386,20 @@ cargo build -->
 
 ```console
 $ cargo build
-  Updating crates.io index
-   Locking 15 packages to latest Rust 1.85.0 compatible versions
-    Adding rand v0.8.5 (available: v0.9.0)
- Compiling proc-macro2 v1.0.93
- Compiling unicode-ident v1.0.17
- Compiling libc v0.2.170
- Compiling cfg-if v1.0.0
- Compiling byteorder v1.5.0
- Compiling getrandom v0.2.15
- Compiling rand_core v0.6.4
- Compiling quote v1.0.38
- Compiling syn v2.0.98
- Compiling zerocopy-derive v0.7.35
- Compiling zerocopy v0.7.35
- Compiling ppv-lite86 v0.2.20
- Compiling rand_chacha v0.3.1
- Compiling rand v0.8.5
- Compiling guessing_game v0.1.0 (file:///projects/guessing_game)
-  Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.48s
+    Updating crates.io index
+     Locking 8 packages to latest Rust 1.96.0 compatible versions
+  Downloaded rand_core v0.10.1
+  Downloaded chacha20 v0.10.1
+  Downloaded rand v0.10.1
+  Downloaded 3 crates (162.9KiB) in 0.59s
+   Compiling libc v0.2.186
+   Compiling rand_core v0.10.1
+   Compiling getrandom v0.4.3
+   Compiling cfg-if v1.0.4
+   Compiling chacha20 v0.10.1
+   Compiling rand v0.10.1
+   Compiling guessing_game v0.1.0 (file:///projects/guessing_game)
+    Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.03s
 ```
 
 </Listing>
@@ -455,7 +452,7 @@ reuse what it has already downloaded and compiled for those.
 Cargo has a mechanism that ensures that you can rebuild the same artifact every
 time you or anyone else builds your code: Cargo will use only the versions of
 the dependencies you specified until you indicate otherwise. For example, say
-that next week version 0.8.6 of the `rand` crate comes out, and that version
+that next week version 0.10.2 of the `rand` crate comes out, and that version
 contains an important bug fix, but it also contains a regression that will
 break your code. To handle this, Rust creates the _Cargo.lock_ file the first
 time you run `cargo build`, so we now have this in the _guessing_game_
@@ -467,7 +464,7 @@ _Cargo.lock_ file. When you build your project in the future, Cargo will see
 that the _Cargo.lock_ file exists and will use the versions specified there
 rather than doing all the work of figuring out versions again. This lets you
 have a reproducible build automatically. In other words, your project will
-remain at 0.8.5 until you explicitly upgrade, thanks to the _Cargo.lock_ file.
+remain at 0.10.1 until you explicitly upgrade, thanks to the _Cargo.lock_ file.
 Because the _Cargo.lock_ file is important for reproducible builds, it’s often
 checked into source control with the rest of the code in your project.
 
@@ -477,29 +474,29 @@ When you _do_ want to update a crate, Cargo provides the command `update`,
 which will ignore the _Cargo.lock_ file and figure out all the latest versions
 that fit your specifications in _Cargo.toml_. Cargo will then write those
 versions to the _Cargo.lock_ file. Otherwise, by default, Cargo will only look
-for versions greater than 0.8.5 and less than 0.9.0. If the `rand` crate has
-released the two new versions 0.8.6 and 0.999.0, you would see the following if
+for versions greater than 0.10.1 and less than 0.11.0. If the `rand` crate has
+released the two new versions 0.10.2 and 0.999.0, you would see the following if
 you ran `cargo update`:
 
 <!-- manual-regeneration
 cd listings/ch02-guessing-game-tutorial/listing-02-02/
 cargo update
-assuming there is a new 0.8.x version of rand; otherwise use another update
+assuming there is a new version of rand; otherwise use another update
 as a guide to creating the hypothetical output shown here -->
 
 ```console
 $ cargo update
     Updating crates.io index
-     Locking 1 package to latest Rust 1.85.0 compatible version
-    Updating rand v0.8.5 -> v0.8.6 (available: v0.999.0)
+     Locking 1 package to latest Rust 1.96.0 compatible version
+    Updating rand v0.10.1 -> v0.10.2 (available: v0.999.0)
 ```
 
 Cargo ignores the 0.999.0 release. At this point, you would also notice a
 change in your _Cargo.lock_ file noting that the version of the `rand` crate
-you are now using is 0.8.6. To use `rand` version 0.999.0 or any version in the
+you are now using is 0.10.2. To use `rand` version 0.999.0 or any version in the
 0.999._x_ series, you’d have to update the _Cargo.toml_ file to look like this
 instead (don’t actually make this change because the following examples assume
-you’re using `rand` 0.8):
+you’re using `rand` 0.10):
 
 ```toml
 [dependencies]
@@ -529,28 +526,29 @@ update _src/main.rs_, as shown in Listing 2-3.
 
 </Listing>
 
-First, we add the line `use rand::Rng;`. The `Rng` trait defines methods that
-random number generators implement, and this trait must be in scope for us to
-use those methods. Chapter 10 will cover traits in detail.
+First, we add the line `use rand::prelude::*;`. The `prelude` module contains
+the most commonly used parts of the `rand` crate, and `use` makes those items
+available in our program's scope.
 
 Next, we’re adding two lines in the middle. In the first line, we call the
-`rand::thread_rng` function that gives us the particular random number
-generator we’re going to use: one that is local to the current thread of
-execution and is seeded by the operating system. Then, we call the `gen_range`
-method on the random number generator. This method is defined by the `Rng`
-trait that we brought into scope with the `use rand::Rng;` statement. The
-`gen_range` method takes a range expression as an argument and generates a
-random number in the range. The kind of range expression we’re using here takes
-the form `start..=end` and is inclusive on the lower and upper bounds, so we
-need to specify `1..=100` to request a number between 1 and 100.
-
-> Note: You won’t just know which traits to use and which methods and functions
-> to call from a crate, so each crate has documentation with instructions for
-> using it. Another neat feature of Cargo is that running the `cargo doc
-> --open` command will build documentation provided by all your dependencies
-> locally and open it in your browser. If you’re interested in other
-> functionality in the `rand` crate, for example, run `cargo doc --open` and
-> click `rand` in the sidebar on the left.
+`rand::rng` function that gives us the particular random number generator we’re
+going to use: one that is local to the current thread of execution and is
+seeded by the operating system. Then, we call the `random_range` method on the
+random number generator. This method is defined by the `RngExt` trait that is
+part of the `rand::prelude` module that we brought into scope with the `use
+rand::prelude::*;` statement. The `random_range` method takes a range
+expression as an argument and generates a random number in the range. The kind
+of range expression we’re using here takes the form `start..=end` and is
+inclusive on the lower and upper bounds, so we need to specify `1..=100` to
+request a number between 1 and 100.
+
+> Note: You won’t just know what to bring into scope and which methods and
+> functions to call from a crate, so each crate has documentation with
+> instructions for using it. Another neat feature of Cargo is that running the
+> `cargo doc --open` command will build documentation provided by all your
+> dependencies locally and open it in your browser. If you’re interested in
+> other functionality in the `rand` crate, for example, run `cargo doc --open`
+> and click `rand` in the sidebar on the left.
 
 The second new line prints the secret number. This is useful while we’re
 developing the program to be able to test it, but we’ll delete it from the
@@ -589,7 +587,10 @@ You guessed: 5
 ```
 
 You should get different random numbers, and they should all be numbers between
-1 and 100. Great job!
+1 and 100. If you get warnings, they are safe to ignore. If you get errors,
+please check that you have `rand = "0.10.1"` in your *Cargo.toml* as future
+versions of `rand` may have a different API, but any version in the `0.10`
+series should work with the code in this chapter.
 
 ## Comparing the Guess to the Secret Number
 
@@ -811,7 +812,7 @@ You win!
 Please input your guess.
 quit
 
-thread 'main' panicked at src/main.rs:28:47:
+thread 'main' (6694925) panicked at src/main.rs:28:47:
 Please type a number!: ParseIntError { kind: InvalidDigit }
 note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
 ```
diff --git a/src/ch07-04-bringing-paths-into-scope-with-the-use-keyword.md b/src/ch07-04-bringing-paths-into-scope-with-the-use-keyword.md
index 8397114f76..83820e2fee 100644
--- a/src/ch07-04-bringing-paths-into-scope-with-the-use-keyword.md
+++ b/src/ch07-04-bringing-paths-into-scope-with-the-use-keyword.md
@@ -174,6 +174,8 @@ added this line to _Cargo.toml_:
 
 <!-- When updating the version of `rand` used, also update the version of
 `rand` used in these files so they all match:
+
+* ch01-01-installation.md
 * ch02-00-guessing-game-tutorial.md
 * ch14-03-cargo-workspaces.md
 -->
@@ -193,8 +195,8 @@ make `rand` available to our project.
 Then, to bring `rand` definitions into the scope of our package, we added a
 `use` line starting with the name of the crate, `rand`, and listed the items we
 wanted to bring into scope. Recall that in [“Generating a Random
-Number”][rand]<!-- ignore --> in Chapter 2, we brought the `Rng` trait into
-scope and called the `rand::thread_rng` function:
+Number”][rand]<!-- ignore --> in Chapter 2, we brought items in the
+`rand::prelude` module into scope and called the `rand::rng` function:
 
 ```rust,ignore
 {{#rustdoc_include ../listings/ch02-guessing-game-tutorial/listing-02-03/src/main.rs:ch07-04}}
diff --git a/src/ch14-03-cargo-workspaces.md b/src/ch14-03-cargo-workspaces.md
index ad47b8b7e3..16a1a26227 100644
--- a/src/ch14-03-cargo-workspaces.md
+++ b/src/ch14-03-cargo-workspaces.md
@@ -215,6 +215,8 @@ so that we can use the `rand` crate in the `add_one` crate:
 
 <!-- When updating the version of `rand` used, also update the version of
 `rand` used in these files so they all match:
+
+* ch01-01-installation.md
 * ch02-00-guessing-game-tutorial.md
 * ch07-04-bringing-paths-into-scope-with-the-use-keyword.md
 -->
@@ -239,9 +241,9 @@ copy output below; the output updating script doesn't handle subdirectories in p
 ```console
 $ cargo build
     Updating crates.io index
-  Downloaded rand v0.8.5
+  Downloaded rand v0.10.1
    --snip--
-   Compiling rand v0.8.5
+   Compiling rand v0.10.1
    Compiling add_one v0.1.0 (file:///projects/add/add_one)
 warning: unused import: `rand`
  --> add_one/src/lib.rs:1:5
@@ -249,7 +251,7 @@ warning: unused import: `rand`
 1 | use rand;
   |     ^^^^
   |
-  = note: `#[warn(unused_imports)]` on by default
+  = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
 
 warning: `add_one` (lib) generated 1 warning (run `cargo fix --lib -p add_one` to apply 1 suggestion)
    Compiling adder v0.1.0 (file:///projects/add/adder)