diff --git a/requirements.txt b/requirements.txt
index 1656e61..6afaabe 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 certifi==2017.4.17
 chardet==3.0.4
 idna==2.5
-lxml==3.8.0
+lxml==4.9.1
 requests==2.17.3
 urllib3==1.21.1
 virtualenv==15.1.0