diff --git a/setup/requirements.txt b/setup/requirements.txt
index 1254694..4d7279a 100644
--- a/setup/requirements.txt
+++ b/setup/requirements.txt
@@ -11,7 +11,7 @@ dogpile.core==0.4.1
 extras==1.0.0
 fixtures==3.0.0
 linecache2==1.0.0
-lxml==3.8.0
+lxml==4.6.5
 misaka==1.0.2
 pathlib==1.0.1
 pbr==1.10.0