diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d7f73bc1b..c6c88dfbc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,7 +13,7 @@ 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/pull_request.yml b/.github/workflows/pull_request.yml
index 7fac5f1ee..97f2ce726 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -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/releases.yml b/.github/workflows/releases.yml
index 28d638bc0..80776d228 100644
--- a/.github/workflows/releases.yml
+++ b/.github/workflows/releases.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
         with:
           submodules: 'recursive'