diff --git a/app/graph/consul_schema.rb b/app/graph/consul_schema.rb
index bf05f48b9..47ef8a112 100644
--- a/app/graph/consul_schema.rb
+++ b/app/graph/consul_schema.rb
@@ -1,6 +1,9 @@
 ConsulSchema = GraphQL::Schema.define do
   query QueryRoot
 
+  # Reject deeply-nested queries
+  max_depth 7
+
   resolve_type -> (object, ctx) {
     # look up types by class name
     type_name = object.class.name