diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 71346c5b..03906102 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -55,7 +55,7 @@ jobs:
         # release-signing-artifacts is disabled: the action's own auto-attach only
         # fires on a 'release: published' event, but we trigger on 'push: tags',
         # so we upload the bundles ourselves via the dist/* glob.
-        uses: sigstore/gh-action-sigstore-python@04cffa1d795717b140764e8b640de88853c92acc # v3.3.0
+        uses: sigstore/gh-action-sigstore-python@5b79a39c381910c090341a2c9b0bf022c8b387e1 # v3.4.0
         with:
           inputs: ./dist/*.tar.gz ./dist/*.whl
           release-signing-artifacts: false