diff --git a/ClientServerTest/flaskapp/requirements.txt b/ClientServerTest/flaskapp/requirements.txt
index 3dcc092..4c8f84c 100644
--- a/ClientServerTest/flaskapp/requirements.txt
+++ b/ClientServerTest/flaskapp/requirements.txt
@@ -49,7 +49,7 @@ soupsieve==1.9.5
 termcolor==1.1.0
 texttable==0.9.1
 typed-ast==1.4.0
-urllib3==1.24.3
+urllib3==1.26.5
 wcwidth==0.1.7
 websocket-client==0.56.0
 Werkzeug==0.16.0