diff --git a/Gemfile.lock b/Gemfile.lock
index c42adbf..52506f9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -98,7 +98,7 @@ GEM
     jquery-rails (2.1.4)
       railties (>= 3.0, < 5.0)
       thor (>= 0.14, < 2.0)
-    json (1.7.6)
+    json (1.8.6)
     libwebsocket (0.1.7.1)
       addressable
       websocket