diff --git a/Gemfile.lock b/Gemfile.lock
index 9bdc705..f2af701 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -39,7 +39,7 @@ GEM
     hashdiff (0.3.7)
     highline (2.0.0)
     hitimes (1.3.0)
-    json (2.1.0)
+    json (2.3.1)
     launchy (2.4.3)
       addressable (~> 2.3)
     listen (2.10.1)