diff --git a/tests/test_insert_files.py b/tests/test_insert_files.py
index 266cc6c..1a11d2c 100644
--- a/tests/test_insert_files.py
+++ b/tests/test_insert_files.py
@@ -1,5 +1,6 @@
 from sqlite_utils import cli, Database
 from click.testing import CliRunner
+import os
 import pathlib