diff --git a/.github/workflows/auto-update-helm-and-operator-version-by-release.yml b/.github/workflows/auto-update-helm-and-operator-version-by-release.yml
index c57a98e2e8a1e..f9bf13bf5a9e9 100644
--- a/.github/workflows/auto-update-helm-and-operator-version-by-release.yml
+++ b/.github/workflows/auto-update-helm-and-operator-version-by-release.yml
@@ -45,8 +45,8 @@ jobs:
           body: 'This is an automated pull request to update the chart versions'
           branch: 'auto-update-${{ env.NEW_APP_VERSION }}'
           path: 'helm-charts'
-          committer: GITHUB_ACTOR@users.noreply.github.com
-          author: GITHUB_ACTOR@users.noreply.github.com
+          committer: "$GITHUB_ACTOR@users.noreply.github.com"
+          author: "$GITHUB_ACTOR@users.noreply.github.com"
           reviewers: arkbriar
           delete-branch: true
 
@@ -75,7 +75,7 @@ jobs:
           body: 'This is an automated pull request to update the risingwave image tags'
           branch: 'auto-update-${{ env.NEW_APP_VERSION }}'
           path: 'risingwave-operator'
-          committer: GITHUB_ACTOR@users.noreply.github.com
-          author: GITHUB_ACTOR@users.noreply.github.com
+          committer: "$GITHUB_ACTOR@users.noreply.github.com"
+          author: "$GITHUB_ACTOR@users.noreply.github.com"
           reviewers: arkbriar
           delete-branch: true