diff --git a/Ch9/server/requirements.txt b/Ch9/server/requirements.txt
index 695e16f..9f8d7a0 100644
--- a/Ch9/server/requirements.txt
+++ b/Ch9/server/requirements.txt
@@ -12,4 +12,4 @@ python-dateutil==2.7.0
 requests==2.20.0
 six==1.11.0
 Werkzeug==0.15.3
-urllib3==1.24.2
\ No newline at end of file
+urllib3==1.26.5
\ No newline at end of file