diff --git a/.gitea/workflows/masterplan-lock.yml b/.gitea/workflows/masterplan-lock.yml
index d203020f..6565d8a5 100644
--- a/.gitea/workflows/masterplan-lock.yml
+++ b/.gitea/workflows/masterplan-lock.yml
@@ -12,9 +12,14 @@ on:
   pull_request:
   workflow_dispatch:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   check:
     runs-on: ubuntu-latest
+    timeout-minutes: 10
     steps:
       - uses: https://git.siax.io/actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # mirrored, immutable
       - name: Masterplan lock check