diff --git a/report_py3o/models/py3o_report.py b/report_py3o/models/py3o_report.py
index bee761208..860cf518d 100644
--- a/report_py3o/models/py3o_report.py
+++ b/report_py3o/models/py3o_report.py
@@ -7,6 +7,7 @@ import os
 import subprocess
 import sys
 import tempfile
+import warnings
 from base64 import b64decode
 from contextlib import closing
 from io import BytesIO