diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6172bc6..3403eca 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,7 +10,7 @@ jobs:
       matrix:
         python: ['3.9', '3.10', '3.11', '3.12', '3.13']
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v5
         with:
           python-version: '${{ matrix.python }}'
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index d6f39ba..033bf4d 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -17,7 +17,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v5
         with: { python-version: '3.12' }
       - run: pip install -e '.[docs]'
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 2325f36..97fcdbb 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -9,7 +9,7 @@ jobs:
       contents: write
       id-token: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v5
         with:
           python-version: '3.12'
diff --git a/.github/workflows/spec-drift.yml b/.github/workflows/spec-drift.yml
index 3470bce..0023267 100644
--- a/.github/workflows/spec-drift.yml
+++ b/.github/workflows/spec-drift.yml
@@ -11,7 +11,7 @@ jobs:
       pull-requests: write
       issues: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v5
         with:
           python-version: '3.12'