diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 3612362..a2e339a 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -12,6 +12,10 @@ env:
   AWS_DEFAULT_REGION: us-east-1
   TG_WORKING_DIR: terragrunt/live/website
 
+# configure concurrency to prevent multiple runs at the same time
+concurrency:
+  group: ${{ github.workflow }}
+
 jobs:
   build:
     runs-on: ubuntu-latest