diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 96919c7..fc12e36 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -106,7 +106,7 @@ jobs:
           subject-path: "dist/*"
 
       - name: Publish package distributions to PyPI
-        uses: pypa/gh-action-pypi-publish@release/v1
+        uses: pypa/gh-action-pypi-publish@ed0c53931b1dc9bd32cbe73a98c7f6766f8a527e # release/v1
         if: steps.release.outputs.released == 'true'
 
       - name: Publish package distributions to GitHub Releases