diff --git a/requirements.txt b/requirements.txt
index f0ad415..a627e5f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ Django==1.10.5
 html5lib==0.999
 language-selector==0.1
 louis==2.6.4
-lxml==3.5.0
+lxml==4.9.1
 onboard==1.2.0
 PAM==0.4.2
 pexpect==4.0.1