diff --git a/requirements.txt b/requirements.txt
index 29ea865..975af4a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ django-compressor==2.1.1
 django-ses-gateway==0.1.1
 django-simple-pagination==1.1.4
 docopt==0.6.2
-lxml==3.7.3
+lxml==4.9.1
 microurl==0.1.1
 packaging==16.8
 pyparsing==2.2.0