diff --git a/packages/core/src/config.ts b/packages/core/src/config.ts
index bda53e190..b99b640dd 100644
--- a/packages/core/src/config.ts
+++ b/packages/core/src/config.ts
@@ -7,7 +7,6 @@ import {
   mergeRsbuildConfig,
 } from '@rsbuild/core';
 import glob from 'fast-glob';
-import { pluginDts } from 'rsbuild-plugin-dts';
 import { DEFAULT_CONFIG_NAME, DEFAULT_EXTENSIONS } from './constant';
 import type {
   Format,
@@ -294,14 +293,15 @@ const getBundleConfig = (bundle = true): RsbuildConfig => {
   };
 };
 
-const getDefaultDtsConfig = (
+const getDefaultDtsConfig = async (
   libConfig: LibConfig,
   entryConfig: RsbuildConfig,
-): RsbuildConfig => {
+): Promise<RsbuildConfig> => {
   const { dts, bundle, output } = libConfig;
 
   if (dts === false || dts === undefined) return {};
 
+  const { pluginDts } = await import('rsbuild-plugin-dts');
   return {
     plugins: [
       pluginDts({
@@ -353,7 +353,10 @@ async function postUpdateRsbuildConfig(
     dirname(configPath),
   );
 
-  const defaultDtsConfig = getDefaultDtsConfig(libConfig, defaultEntryConfig);
+  const defaultDtsConfig = await getDefaultDtsConfig(
+    libConfig,
+    defaultEntryConfig,
+  );
 
   return mergeRsbuildConfig(
     defaultTargetConfig,