diff --git a/requirements/app.txt b/requirements/app.txt
index 6065702..7d039f4 100644
--- a/requirements/app.txt
+++ b/requirements/app.txt
@@ -6,4 +6,4 @@ flask-simpleldap==1.4.0
 # Pillow==7.1.1
 PyGithub==1.47
 pybrake==0.4.6
-lxml==4.5.1
+lxml==4.6.3