diff --git a/requirements.txt b/requirements.txt
index 39562f9..35169df 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ Keras==2.2.4
 Keras-Applications==1.0.8
 Keras-Preprocessing==1.1.2
 kiwisolver==1.1.0
-lxml==4.5.1
+lxml==4.6.3
 Markdown==3.2.2
 matplotlib==3.0.3
 networkx==2.3