diff --git a/blacksmith/Cargo.lock b/blacksmith/Cargo.lock
index 06dc5a6a2..87d16a5a1 100644
--- a/blacksmith/Cargo.lock
+++ b/blacksmith/Cargo.lock
@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "aho-corasick"
 version = "0.7.18"
@@ -217,9 +219,9 @@ dependencies = [
 
 [[package]]
 name = "env_logger"
-version = "0.8.3"
+version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "17392a012ea30ef05a610aa97dfb49496e71c9f676b27879922ea5bdf60d9d3f"
+checksum = "a12e6657c4c97ebab115a42dcee77225f7f482cdd841cf7088c657a42e9e00e7"
 dependencies = [
  "atty",
  "humantime 2.1.0",
@@ -662,7 +664,7 @@ name = "mdbook-blacksmith"
 version = "0.1.0"
 dependencies = [
  "clap",
- "env_logger 0.8.3",
+ "env_logger 0.9.3",
  "log",
  "mdbook",
  "regex",
diff --git a/blacksmith/Cargo.toml b/blacksmith/Cargo.toml
index c445c76eb..ba8eb1775 100644
--- a/blacksmith/Cargo.toml
+++ b/blacksmith/Cargo.toml
@@ -8,7 +8,7 @@ publish = false
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-env_logger = "0.8.3"
+env_logger = "0.9.3"
 log = "0.4.14"
 regex = "1.5.4"
 reqwest = { version = "0.11", features = ["blocking"] }