diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index ee4271e..16dbda0 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -12,6 +12,10 @@ on:
       push: { type: boolean, default: false, required: false }
       patches-b64: { type: string, required: false }
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   update-check:
     if: ${{ ! inputs.patches-b64 }}