diff --git a/requirements.txt b/requirements.txt
index a650c96..a816589 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 html5lib==1.0.1
-lxml==4.6.2
+lxml==4.9.1
 pymongo==3.9.0
 six==1.13.0
 webencodings==0.5.1