diff --git a/examples/todo-vuejs/Gemfile.lock b/examples/todo-vuejs/Gemfile.lock
index 664ca1b..309a476 100644
--- a/examples/todo-vuejs/Gemfile.lock
+++ b/examples/todo-vuejs/Gemfile.lock
@@ -168,7 +168,7 @@ GEM
       railties (>= 5.0)
     websocket-driver (0.6.5)
       websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.2)
+    websocket-extensions (0.1.5)
 
 PLATFORMS
   ruby