diff --git a/.github/workflows/update-and-process-tranco.yml b/.github/workflows/update-and-process-tranco.yml
index 33d441e..ea00a8b 100644
--- a/.github/workflows/update-and-process-tranco.yml
+++ b/.github/workflows/update-and-process-tranco.yml
@@ -17,7 +17,7 @@ jobs:
     
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
         with:
           fetch-depth: 1
       
diff --git a/.github/workflows/update-majestic.yml b/.github/workflows/update-majestic.yml
index e427bed..e249187 100644
--- a/.github/workflows/update-majestic.yml
+++ b/.github/workflows/update-majestic.yml
@@ -17,7 +17,7 @@ jobs:
     
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
         with:
           fetch-depth: 1
       
diff --git a/.github/workflows/update-umbrella.yml b/.github/workflows/update-umbrella.yml
index c73a6d6..5938080 100644
--- a/.github/workflows/update-umbrella.yml
+++ b/.github/workflows/update-umbrella.yml
@@ -17,7 +17,7 @@ jobs:
     
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
         with:
           fetch-depth: 1
       
diff --git a/.github/workflows/validate-manifest.yml b/.github/workflows/validate-manifest.yml
index f02dee6..b8fca3e 100644
--- a/.github/workflows/validate-manifest.yml
+++ b/.github/workflows/validate-manifest.yml
@@ -8,7 +8,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
         with:
           fetch-depth: 1