diff --git a/requirements.txt b/requirements.txt
index 593e791..464c848 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -42,7 +42,7 @@ Keras-Applications==1.0.6
 Keras-Preprocessing==1.0.5
 kiwisolver==1.0.1
 lunardate==0.2.0
-lxml==4.3.0
+lxml==4.6.5
 Markdown==3.0.1
 MarkupSafe==1.1.0
 matplotlib==3.0.2