diff --git a/requirements.txt b/requirements.txt
index 035cd8865..71281988f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -57,7 +57,7 @@ jsonschema==3.2.0
 Keras-Preprocessing==1.1.2
 kiwisolver==1.3.1
 labmaze==1.0.3
-lxml==4.6.2
+lxml==4.6.3
 Markdown==3.3.3
 matplotlib==3.3.3
 msgpack==1.0.2