diff --git a/slate/Gemfile.lock b/slate/Gemfile.lock
index d4af72919fe..4ca5c3571ac 100644
--- a/slate/Gemfile.lock
+++ b/slate/Gemfile.lock
@@ -26,7 +26,7 @@ GEM
     hike (1.2.3)
     http_parser.rb (0.5.3)
     i18n (0.6.9)
-    json (1.8.1)
+    json (2.3.1)
     kramdown (1.3.3)
     libv8 (3.16.14.3)
     listen (1.3.1)