diff --git a/requirements-ci.txt b/requirements-ci.txt
index 0c078d7bb..25b99b6e5 100644
--- a/requirements-ci.txt
+++ b/requirements-ci.txt
@@ -1,3 +1,3 @@
-lxml==4.6.3
+lxml==4.9.0
 pysaml2==7.1.0
 python-ldap==3.4.0