diff --git a/.github/workflows/automerge.yml b/.github/workflows/automerge.yml
index 56490fb..2fa02f6 100644
--- a/.github/workflows/automerge.yml
+++ b/.github/workflows/automerge.yml
@@ -3,23 +3,9 @@ on:
   pull_request:
     types:
       - labeled
-      - unlabeled
-      - synchronize
-      - opened
-      - edited
-      - ready_for_review
-      - reopened
-      - unlocked
-  pull_request_review:
-    types:
-      - submitted
-  check_suite:
-    types:
-      - completed
-  status: {}
 jobs:
   automerge:
-    runs-on: ubuntu-24.04
+    runs-on: nixos
     permissions:
       contents: write
       pull-requests: write