diff --git a/Gemfile.lock b/Gemfile.lock
index dd64512..815d49f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -69,7 +69,7 @@ GEM
     highline (1.6.21)
     hitimes (1.2.2)
     ipaddress (0.8.0)
-    json (1.8.1)
+    json (2.3.1)
     kitchen-docker (1.5.0)
       test-kitchen (>= 1.0.0)
     kitchen-vagrant (0.15.0)