diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 97af0d9c..155e1c52 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
         with:
           submodules: recursive
 
diff --git a/.github/workflows/pr-cleanup.yaml b/.github/workflows/pr-cleanup.yaml
index b6136a52..79a8e910 100644
--- a/.github/workflows/pr-cleanup.yaml
+++ b/.github/workflows/pr-cleanup.yaml
@@ -8,7 +8,7 @@ jobs:
     runs-on: 'ubuntu-latest'
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
         with:
           submodules: recursive
 
diff --git a/.github/workflows/push-main.yaml b/.github/workflows/push-main.yaml
index 0e67407e..623b5ba3 100644
--- a/.github/workflows/push-main.yaml
+++ b/.github/workflows/push-main.yaml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
         with:
           submodules: recursive