diff --git a/.github/workflows/cooker-selfhosted.yml b/.github/workflows/cooker-selfhosted.yml
index 9d494c65..a1b4c6b9 100644
--- a/.github/workflows/cooker-selfhosted.yml
+++ b/.github/workflows/cooker-selfhosted.yml
@@ -85,7 +85,7 @@ jobs:
       - name: Publish the flatpak in a new cooker release
         uses: ncipollo/release-action@v1
         with:
-          tag: "${{ env.GITHUB_REF_SLUG }}[${{ env.buildid }}]"
+          tag: "${{ env.GITHUB_REF_SLUG }}-${{ env.buildid }}"
           body: |
             # Release Notes (Cooker)
             This is a cooker snapshot based on the commit: ${{ github.event.repository.full_name }}@${{github.sha}}.