diff --git a/.github/workflows/merge_gatekeeper.yml b/.github/workflows/merge_gatekeeper.yml
index 2d3eab7..d497e0d 100644
--- a/.github/workflows/merge_gatekeeper.yml
+++ b/.github/workflows/merge_gatekeeper.yml
@@ -27,3 +27,4 @@ jobs:
           self: merge_gatekeeper
           # https://github.com/upsidr/merge-gatekeeper/issues/71#issuecomment-1660607977
           ref: ${{ github.event.pull_request && github.event.pull_request.head.sha || github.ref }}
+          timeout: 18000 # 5 hours