diff --git a/requirements.txt b/requirements.txt
index bf97a7b..11cf54a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,7 @@
 torch>=1.9.0
 opencv-python
 flask_cors
+Jinja2==2.11.3
 flask==1.1.4
 flaskwebgui==0.3.5
 tqdm