diff --git a/.clippy.toml b/.clippy.toml
index ea0d9fb..5848d95 100644
--- a/.clippy.toml
+++ b/.clippy.toml
@@ -1,4 +1,4 @@
-msrv = "1.66.0"  # MSRV
+msrv = "1.66.1"  # MSRV
 warn-on-all-wildcard-imports = true
 allow-expect-in-tests = true
 allow-unwrap-in-tests = true
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f675254..414da8f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -49,7 +49,7 @@ jobs:
     - name: No-default features
       run: cargo test --workspace --no-default-features
   msrv:
-    name: "Check MSRV: 1.66.0"
+    name: "Check MSRV: 1.66.1"
     runs-on: ubuntu-latest
     steps:
     - name: Checkout repository
@@ -57,7 +57,7 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: 1.66.0  # MSRV
+        toolchain: 1.66.1  # MSRV
     - uses: Swatinem/rust-cache@v2
     - name: Default features
       run: cargo check --workspace --all-targets
@@ -107,7 +107,7 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: 1.66.0  # MSRV
+        toolchain: 1.66.1  # MSRV
         components: clippy
     - uses: Swatinem/rust-cache@v2
     - name: Install SARIF tools
diff --git a/Cargo.toml b/Cargo.toml
index b78019e..d582dd3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,7 +4,7 @@ resolver = "2"
 [workspace.package]
 license = "MIT OR Apache-2.0"
 edition = "2021"
-rust-version = "1.66.0"  # MSRV
+rust-version = "1.66.1"  # MSRV
 include = [
   "build.rs",
   "src/**/*",