diff --git a/Chapter03/requirements.txt b/Chapter03/requirements.txt
index ca6a4dd..9c27dd5 100644
--- a/Chapter03/requirements.txt
+++ b/Chapter03/requirements.txt
@@ -1,2 +1,2 @@
 flask==2.3.2
-flask-cors==3.0.2
+flask-cors==6.0.0