diff --git a/.github/workflows/static.yml b/.github/workflows/static.yml
index a4f68e8..8cd80ed 100644
--- a/.github/workflows/static.yml
+++ b/.github/workflows/static.yml
@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
       - name: Setup Node.js
         uses: actions/setup-node@v6
         with:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index faec0f8..496bfae 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
       - name: Setup Node.js
         uses: actions/setup-node@v6
         with: