diff --git a/.github/workflows/opentofu.yml b/.github/workflows/opentofu.yml
index 7ff3066..6d43ad8 100644
--- a/.github/workflows/opentofu.yml
+++ b/.github/workflows/opentofu.yml
@@ -37,6 +37,10 @@ on:
       SSH_KNOWN_HOSTS:
         required: false
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   test:
     permissions: