diff --git a/Gemfile.lock b/Gemfile.lock
index e4ece5d..48bb319 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -49,7 +49,7 @@ GEM
       os (>= 0.9, < 2.0)
       signet (>= 0.16, < 2.a)
     httpclient (2.8.3)
-    json (2.20.0)
+    json (2.21.2)
     jwt (2.7.1)
     logger (1.7.0)
     memoist (0.16.2)