diff --git a/requirements.txt b/requirements.txt
index 64cdf87..a59ad8c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ jupyter-core==4.4.0
 jupyter-highlight-selected-word==0.2.0
 jupyter-latex-envs==1.4.4
 jupyter-nbextensions-configurator==0.4.0
-lxml==4.6.2
+lxml==4.6.5
 MarkupSafe==1.1.0
 mistune==0.8.4
 more-itertools==4.3.0