diff --git a/CHANGELOG.md b/CHANGELOG.md
index 23ed9fa..4c55683 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,13 @@ easy to spot when bumping.
 
 ## [Unreleased]
 
+## [8.0.1] - 2026-09-30
+
+### Fixed
+
+- `AlbumMinimumSchema.album_artists` renamed to `albumArtists`: the grow and hear APIs send camelCase, so the field was always dropped.
+- `CriteriaUpdateSchema.parent` and `updateGenreParent` accept `null`, so a genre can be made a root again (the grow API's PUT allows it).
+
 ## [8.0.0] - 2026-09-29
 
 ### Breaking
diff --git a/packages/app-kit/package.json b/packages/app-kit/package.json
index d59ce9a..6e8cf85 100644
--- a/packages/app-kit/package.json
+++ b/packages/app-kit/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@behindthemusictree/app-kit",
-  "version": "8.0.0",
+  "version": "8.0.1",
   "description": "Shared transport, auth, popup, UI, player, and genre-tree plumbing for BehindTheMusicTree React apps",
   "repository": {
     "type": "git",
diff --git a/packages/app-kit/src/genre-tree/schemas/album-minimum.ts b/packages/app-kit/src/genre-tree/schemas/album-minimum.ts
index f747c0d..7fff50b 100644
--- a/packages/app-kit/src/genre-tree/schemas/album-minimum.ts
+++ b/packages/app-kit/src/genre-tree/schemas/album-minimum.ts
@@ -5,7 +5,7 @@ import { ArtistMinimumSchema } from "./artist-minimum";
 export const AlbumMinimumSchema = z.object({
   uuid: z.string().uuid(),
   name: z.string(),
-  album_artists: z.array(ArtistMinimumSchema).nullable().optional(),
+  albumArtists: z.array(ArtistMinimumSchema).nullable().optional(),
 });
 
 export type AlbumMinimum = z.infer<typeof AlbumMinimumSchema>;
diff --git a/packages/app-kit/src/genre-tree/schemas/criteria/criteria.test.ts b/packages/app-kit/src/genre-tree/schemas/criteria/criteria.test.ts
index 223f82d..798afee 100644
--- a/packages/app-kit/src/genre-tree/schemas/criteria/criteria.test.ts
+++ b/packages/app-kit/src/genre-tree/schemas/criteria/criteria.test.ts
@@ -100,4 +100,8 @@ describe("CriteriaUpdateSchema", () => {
   it("rejects an invalid essentialTracks entry", () => {
     expect(() => CriteriaUpdateSchema.parse({ essentialTracks: ["not-a-uuid"] })).toThrow();
   });
+
+  it("parses a null parent (make root)", () => {
+    expect(() => CriteriaUpdateSchema.parse({ parent: null })).not.toThrow();
+  });
 });
diff --git a/packages/app-kit/src/genre-tree/schemas/criteria/update.ts b/packages/app-kit/src/genre-tree/schemas/criteria/update.ts
index 44dde76..38e9e3f 100644
--- a/packages/app-kit/src/genre-tree/schemas/criteria/update.ts
+++ b/packages/app-kit/src/genre-tree/schemas/criteria/update.ts
@@ -2,7 +2,7 @@ import { z } from "zod";
 
 export const CriteriaUpdateSchema = z.object({
   name: z.string().optional(),
-  parent: z.string().optional(),
+  parent: z.string().nullable().optional(),
   essentialTracks: z.array(z.string().uuid()).optional(),
 });
 
diff --git a/packages/app-kit/src/genre-tree/useGenre.ts b/packages/app-kit/src/genre-tree/useGenre.ts
index f25cb9a..8f74ff6 100644
--- a/packages/app-kit/src/genre-tree/useGenre.ts
+++ b/packages/app-kit/src/genre-tree/useGenre.ts
@@ -170,7 +170,7 @@ export function useUpdateGenre(scope: Scope, getBackendBaseUrl: () => string) {
     mutate({ uuid, data: { name } });
   };
 
-  const updateGenreParent = async (uuid: string, parentUuid: string) => {
+  const updateGenreParent = async (uuid: string, parentUuid: string | null) => {
     return new Promise<void>((resolve) => {
       mutate({ uuid, data: { parent: parentUuid } });
       resolve();