diff --git a/.github/workflows/ci-post-merge.yml b/.github/workflows/ci-post-merge.yml
index 5283a71c..18c772b2 100644
--- a/.github/workflows/ci-post-merge.yml
+++ b/.github/workflows/ci-post-merge.yml
@@ -35,7 +35,7 @@ jobs:
         if: matrix.target.os == 'macos-latest'
         run: sudo ifconfig lo0 alias 127.0.0.3
 
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Free Disk Space
         if: matrix.target.os == 'ubuntu-latest'
@@ -113,7 +113,7 @@ jobs:
     name: minimal versions
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Install Rust (nightly)
         uses: actions-rust-lang/setup-rust-toolchain@v1.15.2
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2d77c909..718ca8c0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -44,7 +44,7 @@ jobs:
         if: matrix.target.os == 'macos-latest'
         run: sudo ifconfig lo0 alias 127.0.0.3
 
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Free Disk Space
         if: matrix.target.os == 'ubuntu-latest'
@@ -117,7 +117,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Install Rust (nightly)
         uses: actions-rust-lang/setup-rust-toolchain@v1.15.2
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 2a75e827..0e6c6ca0 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -15,7 +15,7 @@ jobs:
   coverage:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Install Rust
         uses: actions-rust-lang/setup-rust-toolchain@v1.15.2
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 99e21494..d9017063 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: actions-rust-lang/setup-rust-toolchain@v1.15.2
         with:
@@ -33,7 +33,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: actions-rust-lang/setup-rust-toolchain@v1.15.2
         with: { components: clippy }
@@ -48,7 +48,7 @@ jobs:
     if: false # rustdoc mismatch currently
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Install Rust (${{ vars.RUST_VERSION_EXTERNAL_TYPES }})
         uses: actions-rust-lang/setup-rust-toolchain@v1.15.2