diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index efb5704..890c823 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -4,6 +4,10 @@ on:
   push:
   pull_request:
 
+concurrency:
+  group: pseudotv-validation-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   validate:
     runs-on: ubuntu-latest