diff --git a/.github/workflows/auto-merge-bots.yml b/.github/workflows/auto-merge-bots.yml
index c404ed5..6426435 100644
--- a/.github/workflows/auto-merge-bots.yml
+++ b/.github/workflows/auto-merge-bots.yml
@@ -19,7 +19,7 @@ jobs:
 
       - name: Auto-merge minor and patch updates
         if: steps.meta.outputs.update-type != 'version-update:semver-major'
-        run: gh pr merge --auto --squash "$PR_URL"
+        run: gh pr merge --auto --squash --delete-branch "$PR_URL"
         env:
           PR_URL: ${{ github.event.pull_request.html_url }}
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -29,7 +29,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Auto-merge pre-commit.ci updates
-        run: gh pr merge --auto --squash "$PR_URL"
+        run: gh pr merge --auto --squash --delete-branch "$PR_URL"
         env:
           PR_URL: ${{ github.event.pull_request.html_url }}
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/delete-merged-bot-branches.yml b/.github/workflows/delete-merged-bot-branches.yml
deleted file mode 100644
index 18fc4d2..0000000
--- a/.github/workflows/delete-merged-bot-branches.yml
+++ /dev/null
@@ -1,22 +0,0 @@
-name: Delete merged bot branches
-
-on:
-  pull_request:
-    types: [closed]
-
-permissions:
-  contents: write
-
-jobs:
-  delete-branch:
-    if: >
-      github.event.pull_request.merged == true &&
-      (github.event.pull_request.user.login == 'pre-commit-ci[bot]' ||
-       github.event.pull_request.user.login == 'dependabot[bot]')
-    runs-on: ubuntu-latest
-    steps:
-      - name: Delete head branch
-        run: gh api -X DELETE "repos/${GITHUB_REPOSITORY}/git/refs/heads/${HEAD_REF}"
-        env:
-          HEAD_REF: ${{ github.event.pull_request.head.ref }}
-          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}