diff --git a/lib/polar_web/controllers/publish/version_json.ex b/lib/polar_web/controllers/publish/version_json.ex
index 937c014..341b707 100644
--- a/lib/polar_web/controllers/publish/version_json.ex
+++ b/lib/polar_web/controllers/publish/version_json.ex
@@ -1,9 +1,9 @@
 defmodule PolarWeb.Publish.VersionJSON do
   def show(%{version: version}) do
-    %{data: %{id: version.id}}
+    %{data: %{id: version.id, serial: version.serial}}
   end
 
   def create(%{version: version}) do
-    %{data: %{id: version.id}}
+    %{data: %{id: version.id, serial: version.serial}}
   end
 end
diff --git a/test/polar_web/controllers/publish/version_controller_test.exs b/test/polar_web/controllers/publish/version_controller_test.exs
index f598d12..b091ffc 100644
--- a/test/polar_web/controllers/publish/version_controller_test.exs
+++ b/test/polar_web/controllers/publish/version_controller_test.exs
@@ -44,7 +44,7 @@ defmodule PolarWeb.Publish.VersionControllerTest do
 
       assert %{"data" => data} = json_response(conn, 200)
 
-      assert %{"id" => _id} = data
+      assert %{"id" => _id, "serial" => _serial} = data
     end
   end
 
@@ -90,7 +90,7 @@ defmodule PolarWeb.Publish.VersionControllerTest do
 
       assert %{"data" => data} = json_response(conn, 201)
 
-      assert %{"id" => _id} = data
+      assert %{"id" => _id, "serial" => _serial} = data
     end
   end
 end