diff --git a/requirements.txt b/requirements.txt
index 0b9b2b5..8309eea 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ enum34==1.1.6
 idna==2.5
 incremental==16.10.1
 ipaddress==1.0.18
-lxml==3.7.3
+lxml==4.9.1
 packaging==16.8
 parsel==1.2.0
 pyasn1==0.2.3