diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9e75f6b7..143a9148 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
 
       - name: Install bats-core
         run: sudo apt update && sudo apt -y install bats
diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index be060661..8dc52db9 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -10,7 +10,7 @@ jobs:
 
     steps:
       - name: Checkout PR
-        uses: actions/checkout@v4
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
 
       - name: Install bats-core
         run: sudo apt update && sudo apt -y install bats