diff --git a/chata/index.html b/chata/index.html
index 03e26f4..d6e0488 100644
--- a/chata/index.html
+++ b/chata/index.html
@@ -31,7 +31,7 @@
     const ofColor = '#ff0000';
     const ConnBtn = document.getElementById('ConnButton');
     const TextOut = document.getElementById('output');
-    const url = 'ws://broker.emqx.io:8083/mqtt'
+    const url = 'wss://broker.emqx.io:8084/mqtt'
     // Create an MQTT client instance
     const options = {
       // Clean session