diff --git a/23. Application 8 - Buidling a Web-based Financial Graph/Web-App/demo/requirements.txt b/23. Application 8 - Buidling a Web-based Financial Graph/Web-App/demo/requirements.txt
index b201344..94e0e14 100644
--- a/23. Application 8 - Buidling a Web-based Financial Graph/Web-App/demo/requirements.txt	
+++ b/23. Application 8 - Buidling a Web-based Financial Graph/Web-App/demo/requirements.txt	
@@ -22,6 +22,6 @@ PyYAML==5.1.2
 requests==2.22.0
 six==1.12.0
 tornado==6.0.3
-urllib3==1.25.3
+urllib3==1.25.8
 Werkzeug==0.15.5
 wrapt==1.11.2