diff --git a/packages/affine/block-surface/src/surface-model.ts b/packages/affine/block-surface/src/surface-model.ts
index 10d837178076..25e7eb16951d 100644
--- a/packages/affine/block-surface/src/surface-model.ts
+++ b/packages/affine/block-surface/src/surface-model.ts
@@ -1,134 +1,15 @@
 import type { ConnectorElementModel } from '@blocksuite/affine-model';
 import type { SurfaceBlockProps } from '@blocksuite/block-std/gfx';
-import type { MigrationRunner, Y } from '@blocksuite/store';
 
 import { SurfaceBlockModel as BaseSurfaceModel } from '@blocksuite/block-std/gfx';
 import { DisposableGroup } from '@blocksuite/global/utils';
-import {
-  Boxed,
-  defineBlockSchema,
-  DocCollection,
-  Text,
-} from '@blocksuite/store';
+import { defineBlockSchema, DocCollection } from '@blocksuite/store';
 
 import { elementsCtorMap } from './element-model/index.js';
 import { SurfaceBlockTransformer } from './surface-transformer.js';
 import { connectorWatcher } from './watchers/connector.js';
 import { groupRelationWatcher } from './watchers/group.js';
 
-const migration = {
-  toV4: data => {
-    const { elements } = data;
-    if (elements instanceof Boxed) {
-      const value = elements.getValue();
-      if (!value) {
-        return;
-      }
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any
-      for (const [key, element] of (value as Record<string, any>).entries()) {
-        const type = element.get('type') as string;
-        if (type === 'shape' || type === 'text') {
-          const isBold = element.get('isBold');
-          const isItalic = element.get('isItalic');
-          element.delete('isBold');
-          element.delete('isItalic');
-          if (isBold) {
-            element.set('bold', true);
-          }
-          if (isItalic) {
-            element.set('italic', true);
-          }
-        }
-        if (type === 'connector') {
-          const source = element.get('source');
-          const target = element.get('target');
-          const sourceId = source['id'];
-          const targetId = target['id'];
-          if (!source['position'] && !sourceId) {
-            value.delete(key);
-            return;
-          }
-          if (!target['position'] && !targetId) {
-            value.delete(key);
-            return;
-          }
-        }
-      }
-    } else {
-      for (const key of Object.keys(elements)) {
-        const element = elements[key] as Record<string, unknown>;
-        const type = element['type'] as string;
-        if (type === 'shape' || type === 'text') {
-          const isBold = element['isBold'];
-          const isItalic = element['isItalic'];
-          delete element['isBold'];
-          delete element['isItalic'];
-          if (isBold) {
-            element['bold'] = true;
-          }
-          if (isItalic) {
-            element['italic'] = true;
-          }
-        }
-        if (type === 'connector') {
-          const source = element['source'] as Record<string, unknown>;
-          const target = element['target'] as Record<string, unknown>;
-          const sourceId = source['id'];
-          const targetId = target['id'];
-          // @ts-expect-error
-          if (!source['position'] && (!sourceId || !elements[sourceId])) {
-            delete elements[key];
-            return;
-          }
-          // @ts-expect-error
-          if (!target['position'] && (!targetId || !elements[targetId])) {
-            delete elements[key];
-            return;
-          }
-        }
-      }
-    }
-  },
-  toV5: data => {
-    const { elements } = data;
-    if (!((elements as object | Boxed) instanceof Boxed)) {
-      const yMap = new DocCollection.Y.Map() as Y.Map<Y.Map<unknown>>;
-
-      Object.entries(elements).forEach(([key, value]) => {
-        const map = new DocCollection.Y.Map();
-        Object.entries(value).forEach(([_key, _value]) => {
-          map.set(
-            _key,
-            _value instanceof DocCollection.Y.Text
-              ? _value.clone()
-              : _value instanceof Text
-                ? _value.yText.clone()
-                : _value
-          );
-        });
-        yMap.set(key, map);
-      });
-      const wrapper = new Boxed(yMap);
-      data.elements = wrapper;
-    }
-
-    const childrenMap = data.elements.getValue() as Y.Map<Y.Map<unknown>>;
-
-    for (const [id, element] of childrenMap) {
-      if (
-        element.get('type') === 'mindmap' ||
-        element.get('type') === 'group'
-      ) {
-        const children = element.get('children') as Y.Map<Y.Map<unknown>>;
-
-        if (children?.size === 0) {
-          childrenMap.delete(id);
-        }
-      }
-    }
-  },
-} satisfies Record<string, MigrationRunner<typeof SurfaceBlockSchema>>;
-
 export const SurfaceBlockSchema = defineBlockSchema({
   flavour: 'affine:surface',
   props: (internalPrimitives): SurfaceBlockProps => ({
@@ -147,14 +28,6 @@ export const SurfaceBlockSchema = defineBlockSchema({
       'affine:edgeless-text',
     ],
   },
-  onUpgrade: (data, previousVersion, version) => {
-    if (previousVersion < 4 && version >= 4) {
-      migration.toV4(data);
-    }
-    if (previousVersion < 5 && version >= 5) {
-      migration.toV5(data);
-    }
-  },
   transformer: () => new SurfaceBlockTransformer(),
   toModel: () => new SurfaceBlockModel(),
 });
diff --git a/packages/affine/model/src/blocks/database/database-model.ts b/packages/affine/model/src/blocks/database/database-model.ts
index 19b321f1e49f..a5d67a23dab9 100644
--- a/packages/affine/model/src/blocks/database/database-model.ts
+++ b/packages/affine/model/src/blocks/database/database-model.ts
@@ -1,6 +1,6 @@
-import type { MigrationRunner, Text } from '@blocksuite/store';
+import type { Text } from '@blocksuite/store';
 
-import { BlockModel, defineBlockSchema, nanoid } from '@blocksuite/store';
+import { BlockModel, defineBlockSchema } from '@blocksuite/store';
 
 import type { Column, SerializedCells, ViewBasicDataType } from './types.js';
 
@@ -13,36 +13,6 @@ export type DatabaseBlockProps = {
 
 export class DatabaseBlockModel extends BlockModel<DatabaseBlockProps> {}
 
-const migration = {
-  toV3: data => {
-    const id = nanoid();
-    // @ts-expect-error
-    const title = data['titleColumnName'];
-    // @ts-expect-error
-    const width = data['titleColumnWidth'];
-    // @ts-expect-error
-    delete data['titleColumnName'];
-    // @ts-expect-error
-    delete data['titleColumnWidth'];
-    data.columns.unshift({
-      id,
-      type: 'title',
-      name: title,
-      data: {},
-    });
-    data.views.forEach(view => {
-      if (view.mode === 'table') {
-        // @ts-ignore
-        view.columns.unshift({
-          id,
-          width,
-          statCalcType: 'none',
-        });
-      }
-    });
-  },
-} satisfies Record<string, MigrationRunner<typeof DatabaseBlockSchema>>;
-
 export const DatabaseBlockSchema = defineBlockSchema({
   flavour: 'affine:database',
   props: (internal): DatabaseBlockProps => ({
@@ -58,9 +28,4 @@ export const DatabaseBlockSchema = defineBlockSchema({
     children: ['affine:paragraph', 'affine:list'],
   },
   toModel: () => new DatabaseBlockModel(),
-  onUpgrade: (data, previousVersion, latestVersion) => {
-    if (previousVersion < 3 && latestVersion >= 3) {
-      migration.toV3(data);
-    }
-  },
 });
diff --git a/packages/blocks/src/__tests__/migration/migration.unit.spec.ts b/packages/blocks/src/__tests__/migration/migration.unit.spec.ts
deleted file mode 100644
index 7460b7e9a03c..000000000000
--- a/packages/blocks/src/__tests__/migration/migration.unit.spec.ts
+++ /dev/null
@@ -1,214 +0,0 @@
-import { SurfaceBlockSchema } from '@blocksuite/affine-block-surface';
-import {
-  DatabaseBlockSchema,
-  FrameBlockSchema,
-  ListBlockSchema,
-  NoteBlockSchema,
-  ParagraphBlockSchema,
-  RootBlockSchema,
-} from '@blocksuite/affine-model';
-import { DocCollection, Schema, type Y } from '@blocksuite/store';
-// normal import
-import { readFile } from 'node:fs/promises';
-import { join } from 'node:path';
-import { fileURLToPath } from 'node:url';
-import { assert, describe, expect, test } from 'vitest';
-
-async function loadBinary(name: string) {
-  const originPath = fileURLToPath(import.meta.url);
-  const path = join(originPath, `../ydocs/${name}.ydoc`);
-  const buffer = await readFile(path);
-  const update = new Uint8Array(buffer);
-  const doc = new DocCollection.Y.Doc();
-  DocCollection.Y.applyUpdate(doc, update);
-  return doc;
-}
-
-const schema = new Schema();
-schema.register([
-  RootBlockSchema,
-  SurfaceBlockSchema,
-  NoteBlockSchema,
-  ParagraphBlockSchema,
-  ListBlockSchema,
-  DatabaseBlockSchema,
-  FrameBlockSchema,
-]);
-
-describe('collection migration', () => {
-  test('add pageVersion in collection meta', async () => {
-    const doc = await loadBinary('workspace-v1-v2');
-
-    const meta = doc.getMap('meta');
-    const before = meta.toJSON();
-    assert.equal(before['workspaceVersion'], 1);
-    assert.isUndefined(before['pageVersion']);
-
-    schema.upgradeCollection(doc);
-
-    const after = meta.toJSON();
-    assert.equal(after['workspaceVersion'], 2);
-    assert.equal(after['pageVersion'], 1);
-  });
-});
-
-describe('block migration', () => {
-  test('update shape and text element, `isBold` -> `bold`, `isItalic` -> `italic`, surface v3 -> v4', async () => {
-    const doc = await loadBinary('page-surface-v3-v4');
-
-    // @ts-ignore
-    let surfaceElements = doc
-      .getMap('blocks')
-      .get('zUHGq4EHQJ')
-      .get('prop:elements') as Y.Map<unknown>;
-    let text = surfaceElements.get('Cj2MNGM9UK') as Y.Map<unknown>;
-    let shape = surfaceElements.get('Rl2IT9rGoP') as Y.Map<unknown>;
-
-    assert.equal(text.get('isBold'), true);
-    assert.equal(text.get('isItalic'), true);
-    assert.equal((text.get('text') as Y.Text).toJSON(), 'aaa');
-    assert.isUndefined(text.get('bold'));
-    assert.isUndefined(text.get('italic'));
-
-    assert.equal(shape.get('isBold'), true);
-    assert.equal(shape.get('isItalic'), true);
-    assert.isUndefined(shape.get('bold'));
-    assert.isUndefined(shape.get('italic'));
-
-    schema.upgradeDoc(
-      0,
-      {
-        'affine:page': 1,
-        'affine:note': 1,
-        'affine:paragraph': 1,
-        'affine:surface': 3,
-      },
-      doc
-    );
-
-    // @ts-ignore
-    surfaceElements = doc
-      .getMap('blocks')
-      .get('zUHGq4EHQJ')
-      .get('prop:elements')
-      .get('value') as Y.Map<unknown>;
-    text = surfaceElements.get('Cj2MNGM9UK') as Y.Map<unknown>;
-    shape = surfaceElements.get('Rl2IT9rGoP') as Y.Map<unknown>;
-
-    assert.isUndefined(text.get('isBold'));
-    assert.isUndefined(text.get('isItalic'));
-    assert.equal(text.get('bold'), true);
-    assert.equal(text.get('italic'), true);
-
-    assert.equal((text.get('text') as Y.Text).toJSON(), 'aaa');
-
-    assert.isUndefined(shape.get('isBold'));
-    assert.isUndefined(shape.get('isItalic'));
-    assert.equal(shape.get('bold'), true);
-    assert.equal(shape.get('italic'), true);
-  });
-
-  test('fix wrong connector data', async () => {
-    const doc = await loadBinary('connector');
-    // @ts-ignore
-    const surfaceElements = doc
-      .getMap('blocks')
-      .get('BOpLR3siGx')
-      .get('prop:elements') as Y.Map<unknown>;
-
-    let connector = surfaceElements.get('Gt8_2oZB8h') as Y.Map<unknown>;
-
-    assert.exists(connector);
-
-    schema.upgradeDoc(
-      0,
-      {
-        'affine:list': 1,
-        'affine:page': 1,
-        'affine:note': 1,
-        'affine:paragraph': 1,
-        'affine:surface': 3,
-      },
-      doc
-    );
-
-    connector = surfaceElements.get('Gt8_2oZB8h') as Y.Map<unknown>;
-
-    assert.notExists(connector);
-  });
-
-  test('frame element to block', async () => {
-    const doc = await loadBinary('frame-element-to-block');
-
-    const blocks = doc.getMap('blocks');
-
-    const page = blocks.get('H4fVFXmGUu') as Y.Map<unknown>;
-
-    // @ts-ignore
-    const surfaceElements = blocks
-      .get('eligOTIQu-')
-      .get('prop:elements')
-      .get('value') as Y.Map<unknown>;
-    assert.exists(surfaceElements.get('2'));
-
-    schema.upgradeDoc(
-      0,
-      {
-        'affine:surface': 5,
-      },
-      doc
-    );
-
-    assert.notExists(surfaceElements.get('2'));
-    const pageChildren = page.get('sys:children') as Y.Array<string>;
-    const id = pageChildren.get(pageChildren.length - 1);
-    assert.equal(id, '2');
-    assert.exists(blocks.get(id));
-  });
-
-  test('update database block title data', async () => {
-    const doc = await loadBinary('page-database-v2-v3');
-
-    let databaseBlock = (
-      doc.getMap('blocks').get('Y76JkP9XRn') as Y.Map<unknown>
-    ).toJSON();
-    expect(databaseBlock['prop:titleColumnName']).toBe('Title');
-    expect(databaseBlock['prop:titleColumnWidth']).toBe(200);
-    expect(
-      databaseBlock['prop:columns'].find(
-        (v: Record<string, unknown>) => v.type === 'title'
-      )
-    ).toBeUndefined();
-    expect(databaseBlock['prop:views'].length).toBe(2);
-
-    schema.upgradeDoc(
-      0,
-      {
-        'affine:page': 1,
-        'affine:surface': 4,
-        'affine:note': 1,
-        'affine:paragraph': 1,
-        'affine:database': 2,
-      },
-      doc
-    );
-    databaseBlock = (
-      doc.getMap('blocks').get('Y76JkP9XRn') as Y.Map<unknown>
-    ).toJSON();
-    expect(databaseBlock['prop:titleColumnName']).toBeUndefined();
-    expect(databaseBlock['prop:titleColumnWidth']).toBeUndefined();
-    const titleColumn = databaseBlock['prop:columns'].find(
-      (v: Record<string, unknown>) => v.type === 'title'
-    );
-    expect(titleColumn.type).toBe('title');
-    for (const view of databaseBlock['prop:views']) {
-      if (view['mode'] === 'table') {
-        expect(
-          view['columns'].find(
-            (v: Record<string, unknown>) => v.id === titleColumn.id
-          ).width
-        ).toBe(200);
-      }
-    }
-  });
-});
diff --git a/packages/blocks/src/__tests__/migration/ydocs/connector.ydoc b/packages/blocks/src/__tests__/migration/ydocs/connector.ydoc
deleted file mode 100644
index 2ce30a8579c3..000000000000
Binary files a/packages/blocks/src/__tests__/migration/ydocs/connector.ydoc and /dev/null differ
diff --git a/packages/blocks/src/__tests__/migration/ydocs/frame-element-to-block.ydoc b/packages/blocks/src/__tests__/migration/ydocs/frame-element-to-block.ydoc
deleted file mode 100644
index 2cc63d2f80b8..000000000000
Binary files a/packages/blocks/src/__tests__/migration/ydocs/frame-element-to-block.ydoc and /dev/null differ
diff --git a/packages/blocks/src/__tests__/migration/ydocs/page-database-v2-v3.ydoc b/packages/blocks/src/__tests__/migration/ydocs/page-database-v2-v3.ydoc
deleted file mode 100644
index aa0b0ec722a1..000000000000
Binary files a/packages/blocks/src/__tests__/migration/ydocs/page-database-v2-v3.ydoc and /dev/null differ
diff --git a/packages/blocks/src/__tests__/migration/ydocs/page-surface-v3-v4.ydoc b/packages/blocks/src/__tests__/migration/ydocs/page-surface-v3-v4.ydoc
deleted file mode 100644
index ba53976c3de9..000000000000
Binary files a/packages/blocks/src/__tests__/migration/ydocs/page-surface-v3-v4.ydoc and /dev/null differ
diff --git a/packages/blocks/src/__tests__/migration/ydocs/workspace-v1-v2.ydoc b/packages/blocks/src/__tests__/migration/ydocs/workspace-v1-v2.ydoc
deleted file mode 100644
index 074073e5d0bd..000000000000
Binary files a/packages/blocks/src/__tests__/migration/ydocs/workspace-v1-v2.ydoc and /dev/null differ
diff --git a/packages/blocks/src/_common/transformers/zip.ts b/packages/blocks/src/_common/transformers/zip.ts
index 834d08d16a04..61d5d26d6bba 100644
--- a/packages/blocks/src/_common/transformers/zip.ts
+++ b/packages/blocks/src/_common/transformers/zip.ts
@@ -1,10 +1,4 @@
-import type {
-  CollectionInfoSnapshot,
-  Doc,
-  DocCollection,
-  DocSnapshot,
-  JobMiddleware,
-} from '@blocksuite/store';
+import type { Doc, DocCollection, DocSnapshot } from '@blocksuite/store';
 
 import { sha } from '@blocksuite/global/utils';
 import { extMimeMap, getAssetName, Job } from '@blocksuite/store';
@@ -48,8 +42,6 @@ async function importDocs(collection: DocCollection, imported: Blob) {
 
   const assetBlobs: [string, Blob][] = [];
   const snapshotsBlobs: Blob[] = [];
-  let infoBlob: Blob | undefined;
-  let info: CollectionInfoSnapshot | undefined;
 
   for (const { path, content: blob } of unzip) {
     if (path.includes('MACOSX') || path.includes('DS_Store')) {
@@ -62,7 +54,6 @@ async function importDocs(collection: DocCollection, imported: Blob) {
     }
 
     if (path === 'info.json') {
-      infoBlob = blob;
       continue;
     }
 
@@ -72,25 +63,9 @@ async function importDocs(collection: DocCollection, imported: Blob) {
     }
   }
 
-  {
-    const json = (await infoBlob?.text()) ?? '';
-    info = JSON.parse(json) as CollectionInfoSnapshot;
-  }
-
-  const migrationMiddleware: JobMiddleware = ({ slots, collection }) => {
-    slots.afterImport.on(payload => {
-      if (payload.type === 'page') {
-        collection.schema.upgradeDoc(
-          info?.pageVersion ?? 0,
-          {},
-          payload.page.spaceDoc
-        );
-      }
-    });
-  };
   const job = new Job({
     collection,
-    middlewares: [replaceIdMiddleware, migrationMiddleware, titleMiddleware],
+    middlewares: [replaceIdMiddleware, titleMiddleware],
   });
   const assetsMap = job.assets;
 
diff --git a/packages/framework/store/src/index.ts b/packages/framework/store/src/index.ts
index 8570e3f12881..a7e7d8753e52 100644
--- a/packages/framework/store/src/index.ts
+++ b/packages/framework/store/src/index.ts
@@ -3,7 +3,6 @@
 
 export type { Y };
 export * from './adapter/index.js';
-export * from './migration/index.js';
 export * from './reactive/index.js';
 export * from './schema/index.js';
 export * from './store/index.js';
diff --git a/packages/framework/store/src/migration/index.ts b/packages/framework/store/src/migration/index.ts
deleted file mode 100644
index 0132901f3482..000000000000
--- a/packages/framework/store/src/migration/index.ts
+++ /dev/null
@@ -1,7 +0,0 @@
-import type { BlockSchemaType } from '../schema/base.js';
-
-export * from './migrate-collection.js';
-export * from './migrate-doc.js';
-
-export type MigrationRunner<BlockSchema extends BlockSchemaType> =
-  BlockSchema['onUpgrade'];
diff --git a/packages/framework/store/src/migration/migrate-collection.ts b/packages/framework/store/src/migration/migrate-collection.ts
deleted file mode 100644
index 8f19bcc1372d..000000000000
--- a/packages/framework/store/src/migration/migrate-collection.ts
+++ /dev/null
@@ -1,23 +0,0 @@
-import type * as Y from 'yjs';
-
-interface ICollctionMigration {
-  desc: string;
-  condition: (rootDoc: Y.Doc) => boolean;
-  migrate: (rootDoc: Y.Doc) => void;
-}
-
-export const collectionMigrations: ICollctionMigration[] = [
-  {
-    desc: 'add pageVersion in meta',
-    condition: (rootDoc: Y.Doc) => {
-      const meta = rootDoc.getMap('meta');
-      const workspaceVersion = meta.get('workspaceVersion') as number;
-      return workspaceVersion < 2;
-    },
-    migrate: (rootDoc: Y.Doc) => {
-      const meta = rootDoc.getMap('meta');
-      meta.set('pageVersion', 1);
-      meta.set('workspaceVersion', 2);
-    },
-  },
-];
diff --git a/packages/framework/store/src/migration/migrate-doc.ts b/packages/framework/store/src/migration/migrate-doc.ts
deleted file mode 100644
index 13ba6083feb9..000000000000
--- a/packages/framework/store/src/migration/migrate-doc.ts
+++ /dev/null
@@ -1,54 +0,0 @@
-import { assertExists } from '@blocksuite/global/utils';
-import * as Y from 'yjs';
-
-interface IDocMigration {
-  desc: string;
-  condition: (oldPageVersion: number, docData: Y.Doc) => boolean;
-  migrate: (oldPageVersion: number, docData: Y.Doc) => void;
-}
-
-export const docMigrations: IDocMigration[] = [
-  {
-    desc: 'frame element --> frame block (doc v1 --> v2)',
-    condition: oldPageVersion => {
-      return oldPageVersion < 2;
-    },
-    migrate: (_, docData) => {
-      const blocks = docData.getMap('blocks') as Y.Map<Y.Map<unknown>>;
-      let rootModel!: Y.Map<unknown>, surface!: Y.Map<unknown>;
-      blocks.forEach(block => {
-        const flavour = block.get('sys:flavour');
-        if (flavour === 'affine:page') {
-          rootModel = block;
-        }
-        if (flavour === 'affine:surface') {
-          surface = block;
-        }
-      });
-      assertExists(rootModel);
-      assertExists(surface);
-      // @ts-ignore
-      const elements = surface.get('prop:elements').get('value') as Y.Map<
-        Y.Map<unknown>
-      >;
-      elements.forEach(element => {
-        if (element.get('type') === 'frame') {
-          const frameModel = new Y.Map();
-          const id = element.get('id') as string;
-          frameModel.set('sys:flavour', 'affine:frame');
-          frameModel.set('sys:id', id);
-          frameModel.set('sys:children', new Y.Array());
-          frameModel.set(
-            'prop:title',
-            (element.get('title') as Y.Text).clone()
-          );
-          frameModel.set('prop:xywh', element.get('xywh'));
-          frameModel.set('prop:index', element.get('index'));
-          blocks.set(id, frameModel);
-          (rootModel.get('sys:children') as Y.Array<string>).push([id]);
-          elements.delete(id);
-        }
-      });
-    },
-  },
-];
diff --git a/packages/framework/store/src/schema/base.ts b/packages/framework/store/src/schema/base.ts
index ec9612b3cf96..9b594d669fe3 100644
--- a/packages/framework/store/src/schema/base.ts
+++ b/packages/framework/store/src/schema/base.ts
@@ -49,11 +49,6 @@ export const BlockSchema = z.object({
     .args()
     .returns(z.custom<BaseBlockTransformer>())
     .optional(),
-  onUpgrade: z
-    .function()
-    .args(z.any(), z.number(), z.number())
-    .returns(z.void())
-    .optional(),
 });
 
 export type BlockSchemaType = z.infer<typeof BlockSchema>;
@@ -90,11 +85,6 @@ export function defineBlockSchema<
   flavour: Flavour;
   metadata: Metadata;
   props?: (internalPrimitives: InternalPrimitives) => Props;
-  onUpgrade?: (
-    data: Props,
-    previousVersion: number,
-    latestVersion: number
-  ) => void;
   toModel?: () => Model;
   transformer?: () => Transformer;
 }): {
@@ -103,11 +93,6 @@ export function defineBlockSchema<
     props: PropsGetter<Props>;
     flavour: Flavour;
   } & Metadata;
-  onUpgrade?: (
-    data: Props,
-    previousVersion: number,
-    latestVersion: number
-  ) => void;
   transformer?: () => Transformer;
 };
 
@@ -115,7 +100,6 @@ export function defineBlockSchema({
   flavour,
   props,
   metadata,
-  onUpgrade,
   toModel,
   transformer,
 }: {
@@ -127,11 +111,6 @@ export function defineBlockSchema({
     children?: string[];
   };
   props?: (internalPrimitives: InternalPrimitives) => Record<string, unknown>;
-  onUpgrade?: (
-    data: Record<string, unknown>,
-    previousVersion: number,
-    latestVersion: number
-  ) => void;
   toModel?: () => BlockModel;
   transformer?: () => BaseBlockTransformer;
 }): BlockSchemaType {
@@ -145,7 +124,6 @@ export function defineBlockSchema({
       props,
       toModel,
     },
-    onUpgrade,
     transformer,
   } satisfies z.infer<typeof BlockSchema>;
   BlockSchema.parse(schema);
diff --git a/packages/framework/store/src/schema/schema.ts b/packages/framework/store/src/schema/schema.ts
index 3e84db50e363..7fbf4bda4303 100644
--- a/packages/framework/store/src/schema/schema.ts
+++ b/packages/framework/store/src/schema/schema.ts
@@ -1,102 +1,14 @@
-import type * as Y from 'yjs';
-
 import { minimatch } from 'minimatch';
 
 import type { BlockSchemaType } from './base.js';
 
 import { SCHEMA_NOT_FOUND_MESSAGE } from '../consts.js';
-import { collectionMigrations, docMigrations } from '../migration/index.js';
-import { Block, type YBlock } from '../store/doc/block/index.js';
 import { BlockSchema } from './base.js';
-import { MigrationError, SchemaValidateError } from './error.js';
+import { SchemaValidateError } from './error.js';
 
 export class Schema {
-  private _upgradeBlockVersions = (rootData: Y.Doc) => {
-    const meta = rootData.getMap('meta');
-    const blockVersions = meta.get('blockVersions') as Y.Map<number>;
-    if (!blockVersions) {
-      return;
-    }
-    blockVersions.forEach((version, flavour) => {
-      const currentSchema = this.flavourSchemaMap.get(flavour);
-      if (currentSchema && version !== currentSchema.version) {
-        blockVersions.set(flavour, currentSchema.version);
-      }
-    });
-  };
-
   readonly flavourSchemaMap = new Map<string, BlockSchemaType>();
 
-  upgradeBlock = (
-    flavour: string,
-    oldVersion: number,
-    blockData: Y.Map<unknown>
-  ) => {
-    try {
-      const currentSchema = this.flavourSchemaMap.get(flavour);
-      if (!currentSchema) {
-        throw new MigrationError(`schema for flavour: ${flavour} not found`);
-      }
-      const { onUpgrade, version } = currentSchema;
-      if (!onUpgrade) {
-        return;
-      }
-
-      const block = new Block(this, blockData as YBlock);
-
-      return onUpgrade(block.model, oldVersion, version);
-    } catch (err) {
-      throw new MigrationError(`upgrade block ${flavour} failed.
-          ${err}`);
-    }
-  };
-
-  upgradeCollection = (rootData: Y.Doc) => {
-    this._upgradeBlockVersions(rootData);
-    collectionMigrations.forEach(migration => {
-      try {
-        if (migration.condition(rootData)) {
-          migration.migrate(rootData);
-        }
-      } catch (err) {
-        console.error(err);
-        throw new MigrationError(migration.desc);
-      }
-    });
-  };
-
-  upgradeDoc = (
-    oldPageVersion: number,
-    oldBlockVersions: Record<string, number>,
-    docData: Y.Doc
-  ) => {
-    // block migrations
-    const blocks = docData.getMap('blocks') as Y.Map<Y.Map<unknown>>;
-    Array.from(blocks.values()).forEach(block => {
-      const flavour = block.get('sys:flavour') as string;
-      const currentVersion =
-        (block.get('sys:version') as number) ?? oldBlockVersions[flavour] ?? 0;
-      if (currentVersion == null) {
-        throw new MigrationError(
-          `version for flavour ${flavour} not found in block`
-        );
-      }
-      this.upgradeBlock(flavour, currentVersion, block);
-    });
-
-    // doc migrations
-    docMigrations.forEach(migration => {
-      try {
-        if (migration.condition(oldPageVersion, docData)) {
-          migration.migrate(oldPageVersion, docData);
-        }
-      } catch (err) {
-        throw new MigrationError(`${migration.desc}
-            ${err}`);
-      }
-    });
-  };
-
   validate = (
     flavour: string,
     parentFlavour?: string,
diff --git a/packages/playground/apps/_common/components/pdf/worker.ts b/packages/playground/apps/_common/components/pdf/worker.ts
index 4d0b1ed84e95..daaa292fc1a1 100644
--- a/packages/playground/apps/_common/components/pdf/worker.ts
+++ b/packages/playground/apps/_common/components/pdf/worker.ts
@@ -36,6 +36,7 @@ function renderToImageData(index: number, scale: number) {
   bitmap.fill(0, 0, width, height);
   page.render(bitmap, 0, 0, width, height, 0, flags);
 
+  // @ts-ignore
   const data = new Uint8ClampedArray(bitmap.toBytes());
 
   bitmap.close();