diff --git a/Gemfile.lock b/Gemfile.lock
index 8b9af71..fcb8182 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -16,7 +16,7 @@ GEM
     diff-lcs (1.1.2)
     gherkin (2.3.6)
       json (>= 1.4.6)
-    json (1.5.1)
+    json (2.5.1)
     rspec (2.5.0)
       rspec-core (~> 2.5.0)
       rspec-expectations (~> 2.5.0)