diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3fb7f115..3e3f6ca9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -123,7 +123,7 @@ jobs:
 
   deploy:
     name: Deploy artifacts
-    if: always() && startsWith(github.ref, 'refs/heads/') # we are on a branch (not a PR)
+    if: always() && startsWith(github.repository, 'SofaDefrost') && (startsWith(github.ref, 'refs/heads/') || startsWith(github.ref, 'refs/tags/')) # we are not on a fork and on a branch or a tag (not a PR)
     needs: [build-and-test]
     runs-on: ubuntu-latest
     continue-on-error: true
@@ -170,7 +170,7 @@ jobs:
           name: ${{ env.RELEASE_NAME }}
           tag_name: ${{ env.RELEASE_TAGNAME }}
           fail_on_unmatched_files: false
-          target_commitish: ${{ env.RELEASE_NAME }}
+          target_commitish: ${{ github.sha }}
           body: |
             Last updated on ${{ env.RELEASE_DATE }}
           files: |