diff --git a/.github/workflows/cron-daily-update-nightly.yml b/.github/workflows/cron-daily-update-nightly.yml
index 7224283b..cf1e1e0e 100644
--- a/.github/workflows/cron-daily-update-nightly.yml
+++ b/.github/workflows/cron-daily-update-nightly.yml
@@ -32,6 +32,7 @@ jobs:
         uses: peter-evans/create-pull-request@v6
         with:
           author: Update Nightly Rustc Bot <bot@example.com>
+          committer: Update Nightly Rustc Bot <bot@example.com>
           title: Automated daily update to rustc (to nightly-${{ env.nightly_date }})
           body: |
            Automated update to Github CI workflow `rust.yml` by [create-pull-request](https://github.com/peter-evans/create-pull-request) GitHub action