diff --git a/sample_app/Gemfile.lock b/sample_app/Gemfile.lock
index fc6bd39..f96f615 100644
--- a/sample_app/Gemfile.lock
+++ b/sample_app/Gemfile.lock
@@ -441,7 +441,7 @@ GEM
       railties (>= 5.0)
     websocket-driver (0.7.0)
       websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.3)
+    websocket-extensions (0.1.5)
     xml-simple (1.1.5)
 
 PLATFORMS