diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 423c502..64a0711 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -99,7 +99,7 @@ jobs:
             args: ''
           - directory: ./test_dir/project2
             terraform_version: 1.3.3
-            args: -var-file=./dev/region_a/service_two.tfvars -var-file=./dev/region_b/service_two.tfvars -var-file=./production/region_a/service_two.tfvars
+            args: -var-file=./dev/region_a/service_two.tfvars -var-file=./dev/region_b/service_two.tfvars -var-file=./production/region_a/service_two.tfvars -concurrent
           - directory: ./test_dir/project3/applications/backend-app
             terraform_version: 1.2.1
             args: ''