diff --git a/Gemfile.lock b/Gemfile.lock
index bc4d50e..a1b095f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -67,7 +67,7 @@ GEM
       activesupport (>= 4.2.0)
     hashdiff (0.3.7)
     i18n (0.8.4)
-    json (2.1.0)
+    json (2.3.1)
     loofah (2.0.3)
       nokogiri (>= 1.5.9)
     mail (2.7.0)