diff --git a/requirements.txt b/requirements.txt
index ea5d2b48..c5d2dc29 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 fabric==1.4.2
 Flask==0.9
-lxml==2.3.5
+lxml==4.9.1
 pep8==1.0.1
 pyflakes==0.7.3
 pymongo==2.3