diff --git a/requirements.txt b/requirements.txt
index e8858e9..b1a44b6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -57,7 +57,7 @@ jupyter-core==4.3.0
 Keras==2.0.9
 keyring==11.0.0
 keyrings.alt==2.3
-lxml==4.0.0
+lxml==4.6.5
 Markdown==2.6.11
 MarkupSafe==1.0
 matplotlib==2.1.0