diff --git a/.github/workflows/builder.yml b/.github/workflows/builder.yml
index cc43f2230..3a815cd0b 100644
--- a/.github/workflows/builder.yml
+++ b/.github/workflows/builder.yml
@@ -173,7 +173,7 @@ jobs:
         if: needs.init.outputs.publish == 'true'
         uses: home-assistant/actions/helpers/codenotary@master
         with:
-          source: ${{ steps.dirhash.outputs.dirhash }}
+          source: hash://${{ steps.dirhash.outputs.dirhash }}
           asset: supervisor-${{ needs.init.outputs.version }}
           token: ${{ secrets.CAS_TOKEN }}