diff --git a/.github/workflows/vulnerability_check.yml b/.github/workflows/vulnerability_check.yml
index dd43c28f..4fcd52df 100644
--- a/.github/workflows/vulnerability_check.yml
+++ b/.github/workflows/vulnerability_check.yml
@@ -21,13 +21,13 @@ jobs:
         uses: docker/build-push-action@v4
         with:
           context: ./ckan
-          outputs: type=docker,dest=/tmp/ckan-image.tar
+          outputs: type=tar,dest=/tmp/ckan-image.tar
           tags: ckan-docker/ckan:test-valner-scan
       - name: Build and load CKAN xloader
         uses: docker/build-push-action@v4
         with:
           context: ./ckan/ckanext-xloader
-          outputs: type=docker,dest=/tmp/ckan-xloader-image.tar
+          outputs: type=tar,dest=/tmp/ckan-xloader-image.tar
           tags: ckan-docker/ckan-xloader:test-valner-scan
       - name: Scan for vulnerabilities for CKAN image
         uses: crazy-max/ghaction-container-scan@v3