diff --git a/.github/workflows/changelog-pr.yaml b/.github/workflows/changelog-pr.yaml
index ec4d7d7..3b105b6 100644
--- a/.github/workflows/changelog-pr.yaml
+++ b/.github/workflows/changelog-pr.yaml
@@ -21,9 +21,16 @@ jobs:
         id: generate-token
         uses: actions/create-github-app-token@v1
         with:
-          app-id: ${{ vars.APP_ID }}
+          app-id: ${{ secrets.APP_ID }}
           private-key: ${{ secrets.APP_PRIVATE_KEY }}
 
+      - name: Generate a token
+        id: generate-token-merge
+        uses: actions/create-github-app-token@v1
+        with:
+          app-id: ${{ secrets.APP_ID_APPROVE_AND_MERGE }}
+          private-key: ${{ secrets.APP_KEY_APPROVE_AND_MERGE }}
+
       - name: Checkout code
         uses: actions/checkout@v4
         with:
@@ -261,12 +268,15 @@ jobs:
             gh pr review $PR_NUMBER --approve
           fi
 
-      - name: Re-approve pull request after update
+      - name: Approve pull request and merge
         if: env.changed == 'true'
         env:
-          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GH_TOKEN: ${{ steps.generate-token-merge.outputs.token }}
         run: |
+          git config --global user.name "github-actions-automege[bot]"
+          git config --global user.email "github-actions-automege[bot]@users.noreply.github.com"
           PR_NUMBER=$(gh pr list --head "${BRANCH_NAME}" --json number --jq '.[].number')
           if [ -n "$PR_NUMBER" ]; then
             gh pr review $PR_NUMBER --approve
+            gh pr merge $PR_NUMBER --squash --admin
           fi