diff --git a/src/requirements.txt b/src/requirements.txt
index dd4d5e9..76a3fbf 100644
--- a/src/requirements.txt
+++ b/src/requirements.txt
@@ -1,4 +1,4 @@
 pymongo==3.9.0
 pycodestyle==2.5.0
-lxml==4.3.2
+lxml==4.9.1
 requests==2.22.0