diff --git a/CHANGELOG.md b/CHANGELOG.md
index 04d4df7c..8c621533 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,13 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
+### [0.2.5](https://github.com/unjs/unplugin/compare/v0.2.4...v0.2.5) (2021-08-31)
+
+
+### Bug Fixes
+
+* __dirname mjs support, close [#10](https://github.com/unjs/unplugin/issues/10) ([2a5da06](https://github.com/unjs/unplugin/commit/2a5da067c671eb95bb1ccc8e33e94a821616dd89))
+
 ### [0.2.4](https://github.com/unjs/unplugin/compare/v0.2.3...v0.2.4) (2021-08-30)
 
 
diff --git a/package.json b/package.json
index 37c2eb6e..f6b15379 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "unplugin",
-  "version": "0.2.4",
+  "version": "0.2.5",
   "description": "Unified plugin system for build tools",
   "repository": "unjs/unplugin",
   "license": "MIT",
diff --git a/src/webpack/index.ts b/src/webpack/index.ts
index 7e5eb014..11002d00 100644
--- a/src/webpack/index.ts
+++ b/src/webpack/index.ts
@@ -1,11 +1,13 @@
 import fs from 'fs'
-import { join, resolve } from 'upath'
+import { fileURLToPath } from 'url'
+import { dirname, join, resolve } from 'upath'
 import type { Resolver } from 'enhanced-resolve'
 import VirtualModulesPlugin from 'webpack-virtual-modules'
 import type { UnpluginContextMeta, UnpluginInstance, UnpluginFactory, WebpackCompiler, ResolvedUnpluginOptions } from '../types'
 
-const TRANSFORM_LOADER = resolve(__dirname, 'webpack/loaders/transform.cjs')
-const LOAD_LOADER = resolve(__dirname, 'webpack/loaders/load.cjs')
+const _dirname = typeof __dirname !== 'undefined' ? __dirname : dirname(fileURLToPath(import.meta.url))
+const TRANSFORM_LOADER = resolve(_dirname, 'webpack/loaders/transform.cjs')
+const LOAD_LOADER = resolve(_dirname, 'webpack/loaders/load.cjs')
 
 export function getWebpackPlugin<UserOptions = {}> (
   factory: UnpluginFactory<UserOptions>