diff --git a/.changeset/typed-custom-preferences-update.md b/.changeset/typed-custom-preferences-update.md
new file mode 100644
index 000000000..00fe91b22
--- /dev/null
+++ b/.changeset/typed-custom-preferences-update.md
@@ -0,0 +1,5 @@
+---
+'@vben-core/preferences': patch
+---
+
+fix(@vben-core/preferences): type custom preference updates
diff --git a/packages/@core/preferences/__tests__/preferences-types.test.ts b/packages/@core/preferences/__tests__/preferences-types.test.ts
new file mode 100644
index 000000000..2da8114a9
--- /dev/null
+++ b/packages/@core/preferences/__tests__/preferences-types.test.ts
@@ -0,0 +1,21 @@
+import { describe, expectTypeOf, it } from 'vitest';
+
+import type { DeepPartial } from '@vben-core/typings';
+
+import { updateCustomPreferences } from '../src';
+
+interface ProjectPreferences {
+  defaultTableSize: number;
+  tenantMode: 'multi' | 'single';
+}
+
+describe('custom preferences types', () => {
+  it('accepts a typed partial update', () => {
+    const updateProjectPreferences =
+      updateCustomPreferences<ProjectPreferences>;
+
+    expectTypeOf(updateProjectPreferences)
+      .parameter(0)
+      .toEqualTypeOf<DeepPartial<ProjectPreferences>>();
+  });
+});
diff --git a/packages/@core/preferences/src/preferences.ts b/packages/@core/preferences/src/preferences.ts
index 0f34d0c61..5b3cfffac 100644
--- a/packages/@core/preferences/src/preferences.ts
+++ b/packages/@core/preferences/src/preferences.ts
@@ -188,7 +188,11 @@ class PreferenceManager {
    * 更新扩展偏好设置
    * @param updates - 要更新的扩展偏好设置
    */
-  updateCustomPreferences = (updates: DeepPartial<object>) => {
+  updateCustomPreferences = <
+    TCustomPreferences extends object = CustomPreferencesRecord,
+  >(
+    updates: DeepPartial<TCustomPreferences>,
+  ) => {
     if (!this.customPreferencesExtension) {
       return;
     }