diff --git a/Gemfile.lock b/Gemfile.lock
index 2ea0447..19aad63 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -19,7 +19,7 @@ GEM
       domain_name (~> 0.5)
     http-form_data (2.1.1)
     http_parser.rb (0.6.0)
-    json (2.1.0)
+    json (2.3.0)
     memoizable (0.4.2)
       thread_safe (~> 0.3, >= 0.3.1)
     multipart-post (2.0.0)