diff --git a/.github/workflows/create-release.yml b/.github/workflows/create-release.yml
index 55c4972..9672e60 100644
--- a/.github/workflows/create-release.yml
+++ b/.github/workflows/create-release.yml
@@ -14,6 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     name: PyPI Release
     environment: release
+    if: github.repository_owner == 'sphinx-doc'
     permissions:
       id-token: write  # for PyPI trusted publishing
     steps:
@@ -70,6 +71,7 @@ jobs:
     runs-on: ubuntu-latest
     name: GitHub release
     environment: release
+    if: github.repository_owner == 'sphinx-doc'
     permissions:
       contents: write  # for softprops/action-gh-release to create GitHub release
     steps: