diff --git a/.github/workflows/bundle_with_dakota_caller.yml b/.github/workflows/bundle_with_dakota_caller.yml
index ac6dd658..c02ce1cf 100644
--- a/.github/workflows/bundle_with_dakota_caller.yml
+++ b/.github/workflows/bundle_with_dakota_caller.yml
@@ -20,6 +20,10 @@ on:
         type: boolean
         default: false
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
+
 jobs:
   build-settings:
     runs-on: ubuntu-latest