diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 46cf601..c200bd0 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -56,6 +56,7 @@ jobs:
     timeout-minutes: 20
     strategy:
       fail-fast: false
+      max-parallel: 1
       matrix:
         # list whatever Terraform versions here you would like to support
         terraform: