diff --git a/requirements.txt b/requirements.txt
index bc73d5e..36b2d81 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -51,7 +51,7 @@ keyrings.alt==3.1.1
 lazy-object-proxy==1.3.1
 lobe==0.0.1
 logilab-common==1.4.2
-lxml==4.3.2
+lxml==4.6.5
 Markdown==3.2.2
 MarkupSafe==1.1.0
 mccabe==0.6.1