diff --git a/gui/requirements.txt b/gui/requirements.txt
index 9fe8e9e..14eaab5 100644
--- a/gui/requirements.txt
+++ b/gui/requirements.txt
@@ -3,6 +3,7 @@ astor
 concurrent-iterator
 keras-applications
 lxml
+matplotlib
 opencv-contrib-python-headless
 pandas
 pyside2