diff --git a/Gemfile.lock b/Gemfile.lock
index 2f3f199..78538e5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -40,7 +40,7 @@ GEM
     hooks (0.4.1)
       uber (~> 0.0.14)
     i18n (0.7.0)
-    json (2.2.0)
+    json (2.3.1)
     kramdown (1.17.0)
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)