diff --git a/TOOLS/requirements.txt b/TOOLS/requirements.txt
index 0012df70e..0ae4f8583 100644
--- a/TOOLS/requirements.txt
+++ b/TOOLS/requirements.txt
@@ -21,7 +21,7 @@ feedparser==5.1.3
 gdata==2.0.18
 gevent==1.0.1
 greenlet==0.4.2
-lxml==3.3.5
+lxml==4.6.3
 mock==1.0.1
 passlib==1.6.2
 psutil==2.1.1