diff --git a/.github/workflows/pypi_publish.yml b/.github/workflows/pypi_publish.yml
index 9681338..d197d94 100644
--- a/.github/workflows/pypi_publish.yml
+++ b/.github/workflows/pypi_publish.yml
@@ -101,6 +101,9 @@ jobs:
   release:
     name: Release
     runs-on: ubuntu-latest
+    permissions:
+      # For PyPI's trusted publishing.
+      id-token: write
     if: "startsWith(github.ref, 'refs/tags/')"
     needs: [linux, windows, macos, sdist]
     steps: