diff --git a/.github/workflows/pull-request.yml b/.github/workflows/pull-request.yml
index 93e48034..54cf24ad 100644
--- a/.github/workflows/pull-request.yml
+++ b/.github/workflows/pull-request.yml
@@ -51,7 +51,7 @@ jobs:
         run: sudo chown -R "$USER:$USER" "$GITHUB_WORKSPACE"
 
       - name: "Checkout source"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v4.1.1
         with:
           fetch-depth: 1