diff --git a/Gemfile.lock b/Gemfile.lock
index 41fde93..8dec65a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -61,7 +61,7 @@ GEM
     highline (1.6.21)
     inflecto (0.0.2)
     ipaddress (0.8.0)
-    json (1.8.1)
+    json (2.3.1)
     knife-sakura (0.0.2)
       chef
       fog (>= 1.21.0)