diff --git a/Gemfile.lock b/Gemfile.lock
index 1bf16be46..d1afa1994 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,7 +2,7 @@ GEM
   remote: https://rubygems.org/
   specs:
     ast (1.0.2)
-    json (1.7.5)
+    json (2.5.1)
     mixlib-cli (1.2.2)
     parser (2.0.0.beta4)
       ast (~> 1.0)