diff --git a/.github/workflows/check_updates.yml b/.github/workflows/check_updates.yml
index 48490f13b..1af0e980e 100644
--- a/.github/workflows/check_updates.yml
+++ b/.github/workflows/check_updates.yml
@@ -9,15 +9,18 @@ on:
 jobs:
   check_for_updates:
     runs-on: ubuntu-latest
+    outputs:
+      check_result: ${{ steps.check_openatlas_container.outputs.check_result }}
     steps:
       - name: check OpenAtlas container
+        id: check_openatlas_container
         run: |
-          check_result="$(docker run --rm -u 0:0 --entrypoint /bin/bash ghcr.io/acdh-oeaw/openatlas/container-preview \
+          check_result="$(docker run --rm -u 0:0 --entrypoint /bin/bash ghcr.io/acdh-oeaw/openatlas/container-preview:${{ github.ref_name }} \
             -c 'apt-get update >/dev/null; if [ $(apt list --upgradable 2>/dev/null | wc -l) != 1 ]; then echo -n need to upgrade; else echo -n everything fine ; fi')"
           echo "$check_result"
           echo "check_result=$check_result" >> $GITHUB_OUTPUT
   call_delploy:
     needs: [check_for_updates]
-    if: ${{ toJson(needs.check_for_updates.outputs.check_result == 'need to upgrade') }}
+    if: needs.check_for_updates.outputs.check_result == 'need to upgrade'
     uses: ./.github/workflows/starter.yaml
     secrets: inherit