diff --git a/.github/workflows/update-contributors.yml b/.github/workflows/update-contributors.yml
index 4acc1011..b4b8cc4b 100644
--- a/.github/workflows/update-contributors.yml
+++ b/.github/workflows/update-contributors.yml
@@ -2,12 +2,16 @@ name: "Update Contributors"
 
 on:
   workflow_dispatch:
+  push:
+    branches:
+      - main
 
 jobs:
   update-contributors:
     runs-on: ubuntu-22.04
     permissions:
       contents: write
+      pull-requests: write
     steps:
       - name: "Checkout chipsalliance/firrtl-spec"
         uses: actions/checkout@v3
@@ -18,12 +22,17 @@ jobs:
       - name: "Open PR If New Contributors"
         uses: peter-evans/create-pull-request@v5
         with:
-          token: ${{ secrets.GITHUB_TOKEN }}
           branch: ci/update-contributors
-          author: chiselbot <${{ chiselbot@users.noreply.github.com }}>
-          committer: chiselbot <${{ chiselbot@users.noreply.github.com }}>
+          author: chiselbot <chiselbot@users.noreply.github.com>
+          committer: chiselbot <chiselbot@users.noreply.github.com>
           reviewers: |
             seldridge
           title: Update Contributors
-          body-path: Add missing contributors
-          commit-message: Add missing contributors
+          body: |
+            Add missing contributors.
+
+            This is an automated PR generated by [this GitHub Action](https://github.com/chipsalliance/firrtl-spec/actions/workflows/update-contributors.yml).
+          commit-message: |
+            Add missing contributors.
+
+            This is an automated commit.