diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e09986a..1d761a9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Use Node.js 20
         uses: actions/setup-node@v4
         with:
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 90d4f24..890266e 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -20,7 +20,7 @@ jobs:
       fail-fast: false
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up Node.js 20
         uses: actions/setup-node@v4
diff --git a/.github/workflows/example.yml b/.github/workflows/example.yml
index b407771..1d4a819 100644
--- a/.github/workflows/example.yml
+++ b/.github/workflows/example.yml
@@ -7,7 +7,7 @@ jobs:
   run-action:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Run CPython Patch PR Action
         uses: ./
         with:
diff --git a/.github/workflows/fixtures.yml b/.github/workflows/fixtures.yml
index 6d2aa58..a1733a3 100644
--- a/.github/workflows/fixtures.yml
+++ b/.github/workflows/fixtures.yml
@@ -15,7 +15,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-node@v4
         with:
           node-version: 20
diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 7c2404f..aff4189 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -34,7 +34,7 @@ jobs:
           echo "track=$TRACK" >> "$GITHUB_OUTPUT"
           echo "branch=$BRANCH" >> "$GITHUB_OUTPUT"
           echo "automerge=$AUTOMERGE" >> "$GITHUB_OUTPUT"
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         if: steps.check.outputs.configured == 'true'
       - uses: actions/setup-node@v4
         if: steps.check.outputs.configured == 'true'
@@ -51,7 +51,7 @@ jobs:
         run: npm run bundle
       - name: Checkout sandbox repository
         if: steps.check.outputs.configured == 'true'
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           repository: ${{ env.SANDBOX_REPO }}
           ref: ${{ steps.check.outputs.branch }}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 678e65a..9eb020f 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0