diff --git a/requirements.txt b/requirements.txt
index 11888c6..7092663 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ Keras-Preprocessing==1.0.9
 language-selector==0.1
 lazy-object-proxy==1.3.1
 louis==2.6.4
-lxml==3.5.0
+lxml==4.9.1
 Mako==1.0.3
 Markdown==3.0.1
 MarkupSafe==0.23