diff --git a/.github/workflows/periodic.yml b/.github/workflows/periodic.yml
index fb181da..f0c60f6 100644
--- a/.github/workflows/periodic.yml
+++ b/.github/workflows/periodic.yml
@@ -8,7 +8,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4
+    - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
     - name: test
       run: |
         sudo apt-get update && sudo apt-get install python3-dev && \
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index e4ea9c2..b54e9de 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -16,7 +16,7 @@ jobs:
       name: "release"
     steps:
       - name: Checkout repo
-        uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
       - name: Set up python-${{ env.RELEASE_PY_VER }}
         uses: actions/setup-python@v4
         with:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 4e87b54..07d20a5 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -7,7 +7,7 @@ jobs:
       matrix:
         python-version: [3.9, '3.10', 3.11, 3.12]
     steps:
-    - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4
+    - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
     - name: test
       run: |
         sudo apt-get update && sudo apt-get install python3-dev && \