diff --git a/mailit/Gemfile.lock b/mailit/Gemfile.lock
index 6a32aa6..334be12 100644
--- a/mailit/Gemfile.lock
+++ b/mailit/Gemfile.lock
@@ -50,7 +50,7 @@ GEM
     jquery-rails (1.0.19)
       railties (~> 3.0)
       thor (~> 0.14)
-    json (1.6.4)
+    json (1.8.6)
     mail (2.3.0)
       i18n (>= 0.4.0)
       mime-types (~> 1.16)