diff --git a/textanalyser/requirements.txt b/textanalyser/requirements.txt
index 5d3c22d..1350a5e 100644
--- a/textanalyser/requirements.txt
+++ b/textanalyser/requirements.txt
@@ -74,7 +74,7 @@ lazr.restfulclient==0.13.5
 lazr.uri==1.0.3
 lazy==1.3
 louis==3.5.0
-lxml==4.2.4
+lxml==4.6.5
 macaroonbakery==1.1.3
 Mako==1.0.7
 MarkupSafe==1.0