diff --git a/Gemfile.lock b/Gemfile.lock
index 36ec9c7..64c3b77 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,7 @@ GEM
     colorize (0.8.1)
     diff-lcs (1.3)
     docile (1.3.1)
-    json (2.1.0)
+    json (2.3.1)
     rake (10.5.0)
     rspec (3.8.0)
       rspec-core (~> 3.8.0)