diff --git a/apps/pigment-css-next-app/next.config.js b/apps/pigment-css-next-app/next.config.js
index 5f14d9c8..ed08ec1e 100644
--- a/apps/pigment-css-next-app/next.config.js
+++ b/apps/pigment-css-next-app/next.config.js
@@ -2,7 +2,7 @@
 // eslint-ignore-next-line import/no-unresolved
 const { withPigment } = require('@pigment-css/nextjs-plugin');
 const { experimental_extendTheme: extendTheme } = require('@mui/material/styles');
-const styledEngineMockup = require('@pigment-css/react/styledEngineMockup');
+const { internal_styledEngineMockup } = require('@pigment-css/react');
 
 /**
  * @typedef {import('@pigment-css/nextjs-plugin').PigmentOptions} PigmentOptions
@@ -119,7 +119,7 @@ const pigmentOptions = {
       ...context,
       require: (id) => {
         if (id === '@mui/styled-engine' || id === '@mui/styled-engine-sc') {
-          return styledEngineMockup;
+          return internal_styledEngineMockup;
         }
         return context.require(id);
       },
diff --git a/packages/pigment-css-unplugin/src/index.ts b/packages/pigment-css-unplugin/src/index.ts
index 1cb347f9..89658b2a 100644
--- a/packages/pigment-css-unplugin/src/index.ts
+++ b/packages/pigment-css-unplugin/src/index.ts
@@ -25,7 +25,7 @@ import {
   type PluginCustomOptions,
 } from '@pigment-css/react/utils';
 import type { ResolvePluginInstance } from 'webpack';
-import styledEngineMockup from '@pigment-css/react/styledEngineMockup';
+import { internal_styledEngineMockup } from '@pigment-css/react';
 
 import { handleUrlReplacement, type AsyncResolver } from './utils';
 
@@ -88,7 +88,7 @@ const addMaterialUIOverriedContext = (originalContext: Record<string, unknown>)
   const originalRequire = originalContext.require as (id: string) => any;
   const newRequire = (id: string) => {
     if (id === '@mui/styled-engine' || id === '@mui/styled-engine-sc') {
-      return styledEngineMockup;
+      return internal_styledEngineMockup;
     }
     return originalRequire(id);
   };
diff --git a/packages/pigment-css-vite-plugin/src/vite-plugin.ts b/packages/pigment-css-vite-plugin/src/vite-plugin.ts
index 7d71dc80..19bd92a2 100644
--- a/packages/pigment-css-vite-plugin/src/vite-plugin.ts
+++ b/packages/pigment-css-vite-plugin/src/vite-plugin.ts
@@ -21,7 +21,7 @@ import {
   type IFileReporterOptions,
 } from '@wyw-in-js/transform';
 import { matchAdapterPath, type PluginCustomOptions } from '@pigment-css/react/utils';
-import styledEngineMockup from '@pigment-css/react/styledEngineMockup';
+import { internal_styledEngineMockup } from '@pigment-css/react';
 
 export type VitePluginOptions = {
   debug?: IFileReporterOptions | false | null | undefined;
@@ -46,7 +46,7 @@ const addMaterialUIOverriedContext = (originalContext: Record<string, unknown>)
   const originalRequire = originalContext.require as (id: string) => any;
   const newRequire = (id: string) => {
     if (id === '@mui/styled-engine' || id === '@mui/styled-engine-sc') {
-      return styledEngineMockup;
+      return internal_styledEngineMockup;
     }
     return originalRequire(id);
   };