diff --git a/.github/workflows/check-deps.yml b/.github/workflows/check-deps.yml
index b33455fee7ae6..0b10020e0d1f7 100644
--- a/.github/workflows/check-deps.yml
+++ b/.github/workflows/check-deps.yml
@@ -12,7 +12,7 @@ jobs:
     if: github.repository_owner == 'envoyproxy'
     steps:
       - name: Checkout repository
-        uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846
+        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c
         with:
           ref: ${{ github.head_ref }}
       - name: Set up Python ${{ matrix.python-version }}
diff --git a/.github/workflows/codeql-daily.yml b/.github/workflows/codeql-daily.yml
index 7f81d2d217929..1db0717ede3f5 100644
--- a/.github/workflows/codeql-daily.yml
+++ b/.github/workflows/codeql-daily.yml
@@ -15,7 +15,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846
+      uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c
       with:
         # We must fetch at least the immediate parents so that if this is
         # a pull request then we can checkout the head.
diff --git a/.github/workflows/codeql-push.yml b/.github/workflows/codeql-push.yml
index 2c938a301a49c..8f9f5a4fdf8ef 100644
--- a/.github/workflows/codeql-push.yml
+++ b/.github/workflows/codeql-push.yml
@@ -22,7 +22,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846
+      uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c
       with:
         # We must fetch at least the immediate parents so that if this is
         # a pull request then we can checkout the head.
diff --git a/.github/workflows/pr_notifier.yml b/.github/workflows/pr_notifier.yml
index 9851ca873267c..f6edec62de0af 100644
--- a/.github/workflows/pr_notifier.yml
+++ b/.github/workflows/pr_notifier.yml
@@ -10,7 +10,7 @@ jobs:
     if: github.repository_owner == 'envoyproxy'
 
     steps:
-    - uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846
+    - uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c
     - name: Set up Python 3.8
       uses: actions/setup-python@9c644ca2ab8e57ea0a487b5ec2f8290740378bfd
       with: