diff --git a/Gemfile.lock b/Gemfile.lock
index 933f473..435ee55 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -32,7 +32,7 @@ GEM
       guard-compat
     hashie (3.5.6)
     jmespath (1.3.1)
-    json (2.1.0)
+    json (2.3.1)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)