diff --git a/.github/workflows/main_matrix.yml b/.github/workflows/main_matrix.yml
index 573728ff0..454ffb71a 100644
--- a/.github/workflows/main_matrix.yml
+++ b/.github/workflows/main_matrix.yml
@@ -1,4 +1,7 @@
 name: CI
+concurrency:
+  group: ${{ github.ref }}
+  cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}
 on:
   # # Triggers the workflow on push but only for the master branch
   push: