diff --git a/vaadin-dev-server/src/main/java/com/vaadin/base/devserver/viteproxy/ViteWebsocketEndpoint.java b/vaadin-dev-server/src/main/java/com/vaadin/base/devserver/viteproxy/ViteWebsocketEndpoint.java
index 032aade7a95..fb1e6a7f90a 100644
--- a/vaadin-dev-server/src/main/java/com/vaadin/base/devserver/viteproxy/ViteWebsocketEndpoint.java
+++ b/vaadin-dev-server/src/main/java/com/vaadin/base/devserver/viteproxy/ViteWebsocketEndpoint.java
@@ -66,7 +66,7 @@ public static void init(VaadinContext context, ViteHandler viteHandler) {
             return;
         }
         try {
-            List<String> subProtocols = Collections.singletonList("vite-hmr");
+            List<String> subProtocols = List.of("vite-hmr", "vite-ping");
             ServerEndpointConfig endpointConfig = ServerEndpointConfig.Builder
                     .create(ViteWebsocketEndpoint.class,
                             viteHandler.getPathToVaadinInContext())