diff --git a/.github/workflows/auto-merge.yaml b/.github/workflows/auto-merge.yaml
index 633887a..7a6e8a1 100644
--- a/.github/workflows/auto-merge.yaml
+++ b/.github/workflows/auto-merge.yaml
@@ -18,6 +18,7 @@ jobs:
   enable:
     if: >-
       github.event.pull_request.draft == false
+      && github.event.pull_request.base.ref == 'main'
       && github.event.pull_request.head.repo.full_name == github.repository
       && github.event.pull_request.user.login != 'dependabot[bot]'
       && github.event.pull_request.user.login != 'renovate[bot]'