diff --git a/lib/invest_tinkoff/v2/quotation.rb b/lib/invest_tinkoff/v2/quotation.rb
index d4a53fa..e07e941 100644
--- a/lib/invest_tinkoff/v2/quotation.rb
+++ b/lib/invest_tinkoff/v2/quotation.rb
@@ -14,4 +14,8 @@ def self.create price
       nano
     )
   end
+
+  def to_json(*)
+    to_h.to_json
+  end
 end