diff --git a/flaskapp/requirements.txt b/flaskapp/requirements.txt
index 75b05f2..4d761e2 100644
--- a/flaskapp/requirements.txt
+++ b/flaskapp/requirements.txt
@@ -20,6 +20,6 @@ six==1.11.0
 sklearn==0.0
 urllib3==1.23
 Werkzeug==0.14.1
-lxml==4.2.5
+lxml==4.6.2
 langdetect==1.0.7
 beautifulsoup4==4.6.3