diff --git a/.github/workflows/ex-publish.yml b/.github/workflows/ex-publish.yml
index 09a6e7d..f3ff497 100644
--- a/.github/workflows/ex-publish.yml
+++ b/.github/workflows/ex-publish.yml
@@ -36,7 +36,7 @@ jobs:
         if: github.event_name == 'push'
         env:
           HEX_API_KEY: ${{ secrets.HEX_AUTH_TOKEN }}
-          PRERELEASE_VERSION: dev-${{ env.short_sha }}
+          PRERELEASE_VERSION: dev.${{ env.short_sha }}
       - run: mix hex.publish --yes
         if: github.event_name == 'release' || github.event_name == 'workflow_dispatch'
         env: