diff --git a/weather-forecast/requirements.txt b/weather-forecast/requirements.txt
index 40bdf67..9fe11b5 100644
--- a/weather-forecast/requirements.txt
+++ b/weather-forecast/requirements.txt
@@ -7,7 +7,7 @@ gunicorn==19.9.0
 idna==2.8
 itsdangerous==1.1.0
 Jinja2==2.10.1
-lxml==4.3.3
+lxml==4.9.1
 MarkupSafe==1.1.1
 requests==2.22.0
 soupsieve==1.9.1