diff --git a/Gemfile.lock b/Gemfile.lock
index d1ba6ec..653211d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -202,7 +202,7 @@ GEM
       sprockets-rails (>= 2.0, < 4.0)
     websocket-driver (0.6.5)
       websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.2)
+    websocket-extensions (0.1.5)
     wicked_pdf (1.1.0)
     wkhtmltopdf-binary (0.12.3.1)
     wkhtmltopdf-heroku (2.12.4.0)