diff --git a/requirements.txt b/requirements.txt
index a38f773..2f61d87 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -81,7 +81,7 @@ kiwisolver==1.0.1
 lazy-object-proxy==1.3.1
 llvmlite==0.28.0
 locket==0.2.0
-lxml==4.3.2
+lxml==4.6.2
 macholib==1.11
 Markdown==3.1.1
 MarkupSafe==1.1.1