diff --git a/requirements.txt b/requirements.txt
index a79be36..6b5fb2b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ hyperlink==17.1.1
 idna==2.1
 incremental==17.5.0
 ipaddress==1.0.16
-lxml==3.6.1
+lxml==4.6.5
 numpy==1.11.1
 pandas==0.18.1
 parsel==1.0.2