diff --git a/Gemfile.lock b/Gemfile.lock
index ce4ba17..b1e3063 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -22,7 +22,7 @@ GEM
       multi_json (~> 1.0)
       multi_xml (>= 0.5.2)
     i18n (0.6.4)
-    json (1.8.0)
+    json (2.3.0)
     kgio (2.8.0)
     mail (2.5.4)
       mime-types (~> 1.16)