diff --git a/.github/workflows/container-build.yaml b/.github/workflows/container-build.yaml
index 10dcb442..e91bc0cb 100644
--- a/.github/workflows/container-build.yaml
+++ b/.github/workflows/container-build.yaml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       # checkout code:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       # create json file with credentials for github container registry:
       - uses: docker/login-action@v3
         with: