diff --git a/Gemfile.lock b/Gemfile.lock
index e54cde0..86839c4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -177,7 +177,7 @@ GEM
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
-    json (2.1.0)
+    json (2.3.1)
     json-schema (2.8.0)
       addressable (>= 2.4)
     json_spec (1.1.5)