diff --git a/.github/workflows/push.yml b/.github/workflows/push.yml
index 5887d19..15bb31f 100644
--- a/.github/workflows/push.yml
+++ b/.github/workflows/push.yml
@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
       - name: Set ENV variables
         run: |
           echo "REGISTRY=ghcr.io" >> $GITHUB_ENV