diff --git a/.github/workflows/lint-prebid-podspec.yml b/.github/workflows/lint-prebid-podspec.yml
index 2e1e49b..e872d42 100644
--- a/.github/workflows/lint-prebid-podspec.yml
+++ b/.github/workflows/lint-prebid-podspec.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: macos-15
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
 
       - name: Select Xcode 16.4
         run: sudo xcode-select -s /Applications/Xcode_16.4.app