diff --git a/core/Gemfile.lock b/core/Gemfile.lock
index 526d869f..9de87d31 100644
--- a/core/Gemfile.lock
+++ b/core/Gemfile.lock
@@ -178,7 +178,7 @@ GEM
     jbuilder (2.8.0)
       activesupport (>= 4.2.0)
       multi_json (>= 1.2)
-    json (2.1.0)
+    json (2.3.1)
     json-schema (2.8.1)
       addressable (>= 2.4)
     jsonapi-renderer (0.2.0)