diff --git a/requirements.txt b/requirements.txt
index 35244aa..e42ffe3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -117,7 +117,7 @@ lazy-object-proxy==1.4.2
 libarchive-c==2.8
 llvmlite==0.29.0
 locket==0.2.0
-lxml==4.4.1
+lxml==4.6.3
 Mako==1.1.0
 Markdown==3.1.1
 MarkupSafe==1.1.1