diff --git a/apps/25--5-clock/index.html b/apps/25--5-clock/index.html
index a7c43399..de3cc7f2 100644
--- a/apps/25--5-clock/index.html
+++ b/apps/25--5-clock/index.html
@@ -17,11 +17,11 @@
 
     <script
       crossorigin
-      src="https://cdnjs.cloudflare.com/ajax/libs/react/18.2.0/umd/react.production.min.js"
+      src="https://cdnjs.cloudflare.com/ajax/libs/react/18.3.1/umd/react.production.min.js"
     ></script>
     <script
       crossorigin
-      src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/18.2.0/umd/react-dom.production.min.js"
+      src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/18.3.1/umd/react-dom.production.min.js"
     ></script>
     <script src="bundle.js"></script>
   </body>