diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index deac7ac12..5182c4694 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -31,7 +31,7 @@ jobs:
       LD: ${{ matrix.cc }}
     steps:
       - name: "Checkout ${{ github.ref }} ( ${{ github.sha }} )"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Ruby version
         run: ruby -v
       - name: Compiler version
@@ -46,7 +46,7 @@ jobs:
       MRUBY_CONFIG: ci/msvc
     steps:
       - name: "Checkout ${{ github.ref }} ( ${{ github.sha }} )"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Ruby version
         run: ruby -v
       - name: Build and test
diff --git a/.github/workflows/claude-code-review.yml b/.github/workflows/claude-code-review.yml
index 2c3a718f8..8b9d8b44c 100644
--- a/.github/workflows/claude-code-review.yml
+++ b/.github/workflows/claude-code-review.yml
@@ -27,7 +27,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 1
 
diff --git a/.github/workflows/claude.yml b/.github/workflows/claude.yml
index fab4b58bc..c1f76438c 100644
--- a/.github/workflows/claude.yml
+++ b/.github/workflows/claude.yml
@@ -26,7 +26,7 @@ jobs:
       actions: read # Required for Claude to read CI results on PRs
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 1
 
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 890b4bebb..7f66c5b55 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -18,7 +18,7 @@ jobs:
         language: ["actions"]
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v3
         with:
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 8d392fe17..df1d365eb 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -16,7 +16,7 @@ jobs:
       LDFLAGS: --coverage
     steps:
       - name: "Checkout ${{ github.ref }} ( ${{ github.sha }} )"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Ruby version
         run: ruby -v
       - name: Compiler version
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index a3972d413..29b61d441 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: "Checkout ${{ github.ref }} ( ${{ github.sha }} )"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Install
         run: |
           python -m pip install --upgrade pip
@@ -29,7 +29,7 @@ jobs:
     name: Run ls-lint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: ls-lint/action@v2.3.1
         with:
           config: .github/linters/.ls-lint.yml
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 6ab16cdfc..91d5d0a4e 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -19,7 +19,7 @@ jobs:
       fail-fast: false
     steps:
       - name: "Checkout ${{ github.ref_name }} ( ${{ github.sha }} )"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Builds
         id: builds
         run: |
diff --git a/.github/workflows/super-linter.yml b/.github/workflows/super-linter.yml
index fe1cc550c..fdd349e32 100644
--- a/.github/workflows/super-linter.yml
+++ b/.github/workflows/super-linter.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: "Checkout ${{ github.ref }} ( ${{ github.sha }} )"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           # Full git history is needed to get a proper list of changed files within `super-linter`
           fetch-depth: 0