diff --git a/Gemfile.lock b/Gemfile.lock
index 270a9e1..67ea5ae 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -29,7 +29,7 @@ GEM
       rake
       rdoc
       semver2
-    json (2.1.0)
+    json (2.3.1)
     jwt (1.5.6)
     mime-types (2.99.3)
     mini_portile2 (2.3.0)