diff --git a/2017/setup/requirements.txt b/2017/setup/requirements.txt
index 781f21d..62ee3d4 100644
--- a/2017/setup/requirements.txt
+++ b/2017/setup/requirements.txt
@@ -5,4 +5,4 @@ matplotlib==2.0.2
 xlrd==1.0.0
 ipdb==0.10.1
 Pillow==4.2.1
-lxml==3.8.0
+lxml==4.9.1