diff --git a/Gemfile.lock b/Gemfile.lock
index 0cbcf1a..f36e258 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -90,7 +90,7 @@ GEM
       domain_name (~> 0.5)
     i18n (1.0.1)
       concurrent-ruby (~> 1.0)
-    json (2.1.0)
+    json (2.3.1)
     jwt (1.5.6)
     launchy (2.4.3)
       addressable (~> 2.3)