diff --git a/Gemfile.lock b/Gemfile.lock
index ba676b9..bdf7a2b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,7 +6,7 @@ GEM
     docile (1.3.1)
     doodle (0.2.3)
     eventmachine (1.2.7)
-    json (2.1.0)
+    json (2.5.1)
     metaclass (0.0.4)
     mocha (1.7.0)
       metaclass (~> 0.0.1)