diff --git a/.github/workflows/on_tag.yml b/.github/workflows/on_tag.yml
index fd4fe73..2432f06 100644
--- a/.github/workflows/on_tag.yml
+++ b/.github/workflows/on_tag.yml
@@ -30,8 +30,8 @@ jobs:
 
   deploy_docker_image:
     env:
-      REGISTRY_IMAGE_TAG: $GITHUB_REF_NAME
       CI_REGISTRY_IMAGE: bluebrain/bbp-atlas-pipeline
+      REGISTRY_IMAGE_TAG: ${{ vars.GITHUB_REF_NAME }}
     runs-on: ubuntu-latest
     steps:
       - name: Check out code
@@ -47,4 +47,4 @@ jobs:
         uses: docker/build-push-action@v6
         with:
           push: true
-          tags: bluebrain/bbp-atlas-pipeline:${{ env.REGISTRY_IMAGE_TAG }}
+          tags: $CI_REGISTRY_IMAGE:${{ env.REGISTRY_IMAGE_TAG }}