diff --git a/.github/workflows/pr-backport.yaml b/.github/workflows/pr-backport.yaml
index 69607d6fb..13fab6cdb 100644
--- a/.github/workflows/pr-backport.yaml
+++ b/.github/workflows/pr-backport.yaml
@@ -16,6 +16,10 @@ on:
         type: boolean
         default: false
 
+concurrency:
+  group: backport-${{ github.event_name == 'workflow_dispatch' && inputs.pr_number || github.event.pull_request.number }}
+  cancel-in-progress: false
+
 jobs:
   backport:
     if: >