diff --git a/buildstockbatch/workflow_generator/residential/v2024_07_18/tests/test_residential_workflow_generator.py b/buildstockbatch/workflow_generator/residential/v2024_07_18/tests/test_residential_workflow_generator.py
index a540ba91..34ed907c 100644
--- a/buildstockbatch/workflow_generator/residential/v2024_07_18/tests/test_residential_workflow_generator.py
+++ b/buildstockbatch/workflow_generator/residential/v2024_07_18/tests/test_residential_workflow_generator.py
@@ -4,6 +4,7 @@
 from buildstockbatch.workflow_generator.residential.v2024_07_18.residential_hpxml_defaults import DEFAULT_MEASURE_ARGS
 from buildstockbatch.workflow_generator.residential.v2024_07_18.residential_hpxml_arg_mapping import ARG_MAP
 from testfixtures import LogCapture
+import os
 import pathlib
 import yamale
 import logging