diff --git a/Gemfile.lock b/Gemfile.lock
index d421d81..7b3c10e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -168,7 +168,7 @@ GEM
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
-    json (2.2.0)
+    json (2.3.1)
     json-jwt (1.10.2)
       activesupport (>= 4.2)
       aes_key_wrap