diff --git a/.github/workflows/main_matrix.yml b/.github/workflows/main_matrix.yml
index bb2f43503..4c1493ae4 100644
--- a/.github/workflows/main_matrix.yml
+++ b/.github/workflows/main_matrix.yml
@@ -1,6 +1,6 @@
 name: CI
 concurrency:
-  group: ${{ github.head_ref || github.run_id }}
+  group: ci-${{ github.head_ref || github.run_id }}
   cancel-in-progress: true
 #concurrency:
 #  group: ${{ github.ref }}