diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 00457a53d..8e1adf7a2 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -6,6 +6,10 @@ on:
     - main
   pull_request:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   tests:
     name: Python ${{ matrix.python-version }}