diff --git a/Gemfile.lock b/Gemfile.lock
index 16c37d9..1a03324 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -10,7 +10,7 @@ GEM
   specs:
     iron_core (1.0.12)
       rest (>= 3.0.8)
-    json (1.8.3)
+    json (2.3.0)
     net-http-persistent (2.9.4)
     netrc (0.11.0)
     rest (3.0.8)