diff --git a/Gemfile.lock b/Gemfile.lock
index 761da98..dfea2a7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -17,7 +17,7 @@ GEM
       multi_json (~> 1.0)
     builder (3.0.0)
     i18n (0.6.0)
-    json (1.5.4)
+    json (2.3.1)
     mime-types (1.16)
     multi_json (1.0.3)
     rack (1.3.2)