diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index eedd31e..bfb0671 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -4,6 +4,10 @@ on:
   push:
   pull_request:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   image:
     name: Docker image