diff --git a/Gemfile.lock b/Gemfile.lock
index 4acda53..7c65ea9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -56,7 +56,7 @@ GEM
     hitimes (1.2.4)
     i18n (1.8.3)
       concurrent-ruby (~> 1.0)
-    json (2.0.2)
+    json (2.3.1)
     launchy (2.4.3)
       addressable (~> 2.3)
     method_source (0.8.2)