diff --git a/drake_stuff/mbp_robot_arm_joint_limit_stuff/requirements.freeze.txt b/drake_stuff/mbp_robot_arm_joint_limit_stuff/requirements.freeze.txt
index 3c20446c..904a3838 100644
--- a/drake_stuff/mbp_robot_arm_joint_limit_stuff/requirements.freeze.txt
+++ b/drake_stuff/mbp_robot_arm_joint_limit_stuff/requirements.freeze.txt
@@ -101,7 +101,7 @@ launchpadlib==1.10.6
 lazr.restfulclient==0.13.5
 lazr.uri==1.0.3
 louis==3.5.0
-lxml==4.2.1
+lxml==4.6.2
 macaroonbakery==1.1.3
 Mako==1.0.7
 MarkupSafe==1.1.1