diff --git a/Gemfile.lock b/Gemfile.lock
index 57ac6ac..207ee9e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -30,7 +30,7 @@ GEM
     hashie (4.1.0)
     i18n (1.8.2)
       concurrent-ruby (~> 1.0)
-    json (2.1.0)
+    json (2.3.1)
     json-jwt (1.12.0)
       activesupport (>= 4.2)
       aes_key_wrap