diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index fa999a42ef81..570b59c7a6d9 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -57,7 +57,7 @@ jobs:
     name: Verify build
     strategy:
       matrix:
-        toolchain: [stable, 1.63.0]
+        toolchain: [stable, 1.65.0]
         include:
           # Nightly has a lot of targets, so split it in half
           - toolchain: nightly
@@ -67,7 +67,7 @@ jobs:
           - toolchain: beta
             only: '(aarch64|x86_64)' # just a spot check for beta
           - toolchain: stable
-          - toolchain: 1.63.0 # msrv
+          - toolchain: 1.65.0 # msrv
     runs-on: ubuntu-24.04
     timeout-minutes: 25
     env:
@@ -97,7 +97,7 @@ jobs:
       - name: Execute build check
         run: |
           set -eux
-          if [ "${{ matrix.toolchain }}" = "1.63.0" ]; then
+          if [ "${{ matrix.toolchain }}" = "1.65.0" ]; then
               # Remove `-Dwarnings` at the MSRV since lints may be different
               export RUSTFLAGS=""
               # Remove `ctest` which uses the 2024 edition
diff --git a/Cargo.toml b/Cargo.toml
index a1f213924e4b..ffe53535f9c3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,7 +9,7 @@ authors = ["The Rust Project Developers"]
 edition = "2021"
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/rust-lang/libc"
-rust-version = "1.63"
+rust-version = "1.65"
 
 [package.metadata.docs.rs]
 features = ["extra_traits"]
diff --git a/README.md b/README.md
index 0121dd2a2079..873360c8dec8 100644
--- a/README.md
+++ b/README.md
@@ -51,7 +51,7 @@ libc = "0.2"
 
 ## Rust version support
 
-The minimum supported Rust toolchain version is currently **Rust 1.63**.
+The minimum supported Rust toolchain version is currently **Rust 1.65**.
 
 Increases to the MSRV are allowed to change without a major (i.e. semver-
 breaking) release in order to avoid a ripple effect in the ecosystem. A policy