diff --git a/Gemfile.lock b/Gemfile.lock
index 9ed6bbaa..ab464af3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -232,7 +232,7 @@ GEM
     httpclient (2.8.3)
     i18n (0.8.0)
     ipaddress (0.8.3)
-    json (2.1.0)
+    json (2.3.1)
     jwt (2.2.1)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)