diff --git a/Gemfile.lock b/Gemfile.lock
index 1e720374..420936b6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -36,7 +36,7 @@ GEM
       url_mount (~> 0.2.1)
     httpclient (2.6.0.1)
     i18n (0.6.1)
-    json (1.8.3)
+    json (2.3.1)
     listen (0.7.3)
     maruku (0.6.1)
       syntax (>= 1.0.0)