diff --git a/Gemfile.lock b/Gemfile.lock
index e20dc37..7f9bb45 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -81,7 +81,7 @@ GEM
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
     jquery_mask_rails (0.1.0)
-    json (2.1.0)
+    json (2.3.1)
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)