diff --git a/.github/workflows/renovate.yaml b/.github/workflows/renovate.yaml
index 08f1f82..c19c600 100644
--- a/.github/workflows/renovate.yaml
+++ b/.github/workflows/renovate.yaml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
 
       - name: Setup Node
         uses: actions/setup-node@v4
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index b37bc87..539500b 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       - name: Setup Node
         uses: actions/setup-node@v4
         with:
@@ -23,7 +23,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       - name: Setup Node
         uses: actions/setup-node@v4
         with:
@@ -40,7 +40,7 @@ jobs:
       matrix: ${{ steps.gen-matrix.outputs.matrix }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       - name: Generate Matrix
         uses: ./
         id: gen-matrix