diff --git a/Python/requirements.txt b/Python/requirements.txt
index 8b17c7912e452ca0a62247578cc099e3700a6adb..ded26051abb63145842f304ba865dc8487a8be73 100644
--- a/Python/requirements.txt
+++ b/Python/requirements.txt
@@ -4,6 +4,7 @@ cycler==0.10.0
 imageio==2.9.0
 iniconfig==1.1.1
 kiwisolver==1.3.1
+matplotlib==3.3.3
 meshio==4.3.8
 numpy==1.19.5
 packaging==20.8