diff --git a/requirements.txt b/requirements.txt
index 1fe7272..8dfec79 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 Jinja2==2.10.1
-lxml==4.3.2
+lxml==4.9.1
 requests==2.21.0
 certifi