diff --git a/requirements.txt b/requirements.txt
index 16b31af..de93856 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 Flask==1.1.1
-lxml==4.5.0
+lxml==4.9.1
 progress==1.5
 wget==3.2