diff --git a/.github/workflows/reusable-build.yml b/.github/workflows/reusable-build.yml
index 0859880..1603b19 100644
--- a/.github/workflows/reusable-build.yml
+++ b/.github/workflows/reusable-build.yml
@@ -229,7 +229,7 @@ jobs:
         run: |
           cosign sign -y --key env://COSIGN_PRIVATE_KEY ${{ steps.registry_case.outputs.lowercase }}/${{ steps.build_image.outputs.image }}@${TAGS}
         env:
-          TAGS: ${{ steps.push.outputs.digest }}
+          TAGS: ${{ steps.push.outputs.outputs && fromJSON(steps.push.outputs.outputs).digest }}
           COSIGN_EXPERIMENTAL: false
           COSIGN_PRIVATE_KEY: ${{ secrets.SIGNING_SECRET }}
 
@@ -415,7 +415,7 @@ jobs:
         run: |
           cosign sign -y --key env://COSIGN_PRIVATE_KEY ${{ steps.registry_case.outputs.lowercase }}/${{ steps.build_image.outputs.image }}@${TAGS}
         env:
-          TAGS: ${{ steps.push.outputs.digest }}
+          TAGS: ${{ steps.push.outputs.outputs && fromJSON(steps.push.outputs.outputs).digest }}
           COSIGN_EXPERIMENTAL: false
           COSIGN_PRIVATE_KEY: ${{ secrets.SIGNING_SECRET }}