diff --git a/py-kms/pykms_Sql.py b/py-kms/pykms_Sql.py
index c8bc53c..4dd4c78 100644
--- a/py-kms/pykms_Sql.py
+++ b/py-kms/pykms_Sql.py
@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 
+import os
 import logging
 
 # sqlite3 is optional.