diff --git a/Gemfile.lock b/Gemfile.lock
index 3e780e3..ff6cfa0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    json (2.1.0)
+    json (2.3.0)
     rack (1.6.11)
     rack-protection (1.5.5)
       rack