diff --git a/Gemfile.lock b/Gemfile.lock
index 9c18ca3..178d02e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -102,7 +102,7 @@ GEM
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
-    json (2.1.0)
+    json (2.3.1)
     json_pure (2.1.0)
     kaminari (1.0.1)
       activesupport (>= 4.1.0)