diff --git a/Gemfile.lock b/Gemfile.lock
index 20f3af6..ae3a726 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -74,7 +74,7 @@ GEM
     gherkin (2.3.7)
       json (>= 1.4.6)
     i18n (0.5.0)
-    json (1.5.1)
+    json (2.3.1)
     json_pure (1.5.1)
     launchy (0.4.0)
       configuration (>= 0.0.5)