diff --git a/test_data/sagehen_mf6/sagehen_postprocess_graphs.py b/test_data/sagehen_mf6/sagehen_postprocess_graphs.py
index d79faf20..b46b7571 100644
--- a/test_data/sagehen_mf6/sagehen_postprocess_graphs.py
+++ b/test_data/sagehen_mf6/sagehen_postprocess_graphs.py
@@ -16,7 +16,7 @@
 import netCDF4 as nc
 import pandas as pd
 
-import pywatereshed as pws
+import pywatershed as pws
 
 # this requires an editable install:
 pws_repo_root = pws.constants.__pywatershed_root__.parent