diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bd69c4c7..9b20bff2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,6 +10,10 @@ on:
 env:
   PRIVATE_KEY: ${{ secrets.PRIVATE_KEY }}
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
 jobs:
   assert-private-key:
     name: Check private key exists