diff --git a/requirements-manage_packages.txt b/requirements-manage_packages.txt
index b0da5dd..c7245a1 100644
--- a/requirements-manage_packages.txt
+++ b/requirements-manage_packages.txt
@@ -1,3 +1,3 @@
-lxml==4.1.1
+lxml==4.9.1
 ifstools==1.4
 Pillow==5.1.0