diff --git a/Gemfile.lock b/Gemfile.lock
index b1f4000..e1c4069 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,7 @@ GEM
       capybara (~> 2.0, >= 2.0.2)
       json
     diff-lcs (1.2.5)
-    json (1.8.1)
+    json (2.3.1)
     mime-types (2.0)
     mini_portile (0.5.2)
     nokogiri (1.6.0)