diff --git a/src/main/python/ddadevops/devops_terraform_build.py b/src/main/python/ddadevops/devops_terraform_build.py
index 473bcaf..a21b039 100644
--- a/src/main/python/ddadevops/devops_terraform_build.py
+++ b/src/main/python/ddadevops/devops_terraform_build.py
@@ -5,6 +5,7 @@ from pkg_resources import *
 from python_terraform import *
 from .python_util import filter_none
 from .devops_build import DevopsBuild, create_devops_build_config
+from typing import Optional
 import sys