diff --git a/Gemfile.lock b/Gemfile.lock
index 61f40c8..83d0dd9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -177,7 +177,7 @@ GEM
     unicode-display_width (1.7.0)
     websocket-driver (0.6.5)
       websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.2)
+    websocket-extensions (0.1.5)
 
 PLATFORMS
   ruby