diff --git a/Gemfile.lock b/Gemfile.lock
index 571dae7..1d2e42e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -287,7 +287,7 @@ GEM
       railties (>= 5.0)
     websocket-driver (0.7.0)
       websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.3)
+    websocket-extensions (0.1.5)
     wkhtmltopdf (0.1.2)
     wkhtmltopdf-binary (0.12.3)
     wkhtmltopdf-heroku (2.12.4.0)