diff --git a/package.json b/package.json
index 18f1af0..6915b25 100644
--- a/package.json
+++ b/package.json
@@ -29,6 +29,7 @@
     "@types/firefox-webext-browser": "^82.0.0",
     "@types/fs-extra": "^9.0.11",
     "@types/jest": "^26.0.23",
+    "@types/klaw": "^3.0.2",
     "@types/node": "^16.0.0",
     "@types/webpack": "4",
     "@types/ws": "^7.4.6",
@@ -38,6 +39,7 @@
   },
   "dependencies": {
     "fs-extra": "^10.0.0",
+    "klaw": "^3.0.0",
     "webpack-inject-plugin": "^1.5.5",
     "ws": "^7.5.2"
   }
diff --git a/src/BrowserExtensionPlugin.ts b/src/BrowserExtensionPlugin.ts
index 15f57d5..f91c3ad 100644
--- a/src/BrowserExtensionPlugin.ts
+++ b/src/BrowserExtensionPlugin.ts
@@ -1,11 +1,11 @@
 import path from 'path'
 import https from 'https'
 import fs from 'fs-extra'
+import walk from 'klaw'
 import InjectPlugin, { ENTRY_ORDER } from 'webpack-inject-plugin'
 import WebSocket from 'ws'
 import { compileTemplate } from './compileTemplate'
 import type webpack from 'webpack'
-
 export class BrowserExtensionPlugin {
   port: number
   host: string
@@ -98,11 +98,24 @@ export class BrowserExtensionPlugin {
       compiler.hooks.done.tap(name, this.done.bind(this))
       this.addClient(compiler)
     }
-    if (this.manifestFilePath) {
-      await this.compileManifest(compiler)
+    compiler.hooks.emit.tapPromise(name, this.emit.bind(this))
+  }
+
+  /**
+   * emit add file to the emit that is happening to make sure the files are emitted at the correct hook
+   */
+  async emit(compilation: webpack.compilation.Compilation) {
+    const manifest = await this.compileManifest(compilation.compiler)
+    const locales = await this.getLocales(compilation.compiler)
+
+    if (manifest) {
+      compilation.assets['manifest.json'] = manifest
     }
-    if (this.localeDirectory) {
-      await this.syncLocales(compiler)
+
+    if (locales) {
+      locales.forEach(locale => {
+        compilation.assets[locale.file] = locale.asset
+      })
     }
   }
 
@@ -120,7 +133,7 @@ export class BrowserExtensionPlugin {
     }
 
     if (changedFiles.some(file => file.includes('_locales'))) {
-      await this.syncLocales(compiler)
+      await this.getLocales(compiler)
     }
 
     return this.startServer()
@@ -145,12 +158,6 @@ export class BrowserExtensionPlugin {
    */
   afterCompile(compilation: webpack.compilation.Compilation) {
     this.notifyExtension({ action: 'afterCompile' })
-    if (this.manifestFilePath) {
-      compilation.fileDependencies.add(path.resolve(this.manifestFilePath))
-    }
-    if (this.localeDirectory) {
-      compilation.contextDependencies.add(path.resolve(this.localeDirectory))
-    }
   }
 
   notifyExtension(data: { [key: string]: any }) {
@@ -211,26 +218,60 @@ export class BrowserExtensionPlugin {
           manifest = await this.onCompileManifest(manifest)
         }
 
-        await fs.writeFile(
-          path.resolve(compiler.outputPath, 'manifest.json'),
-          JSON.stringify(manifest, null, 2),
-        )
+        const source = JSON.stringify(manifest, null, 2)
+
+        return {
+          source: () => source,
+          size: () => source.length,
+        }
       } catch (err) {
         this.log(`failed to compile manifest: ${err.message}`)
       }
     }
+    return null
   }
 
   /**
    * Sync locales with webpack
    */
-  async syncLocales(compiler: webpack.Compiler) {
-    if (this.localeDirectory) {
-      await fs.copySync(
-        this.localeDirectory,
-        path.resolve(compiler.outputPath, './_locales'),
-      )
+  async getLocales(compiler: webpack.Compiler) {
+    const { localeDirectory } = this
+    if (localeDirectory) {
+      const files = await this.getFilesInDirectory(localeDirectory)
+      return files.map(file => ({
+        file: `_locales/${path.relative(localeDirectory, file)}`,
+        asset: {
+          source: () => fs.readFileSync(file, 'utf8'),
+          size: () => fs.statSync(file).size,
+        },
+      }))
     }
+    return []
+  }
+
+  async getFilesInDirectory(directory: string): Promise<Array<string>> {
+    return new Promise((resolve, reject) => {
+      const files: Array<string> = []
+      walk(directory, {
+        filter: item => {
+          const basename = path.basename(item)
+          return basename === '.' || basename[0] !== '.'
+        },
+      })
+        .on('data', file => {
+          const path = file.path
+          const isFile = file.stats.isFile()
+          if (isFile) {
+            files.push(path)
+          }
+        })
+        .on('end', () => {
+          resolve(files)
+        })
+        .on('error', err => {
+          reject(err)
+        })
+    })
   }
 
   /**
diff --git a/yarn.lock b/yarn.lock
index 28f52d6..1220a60 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1231,6 +1231,13 @@
     jest-diff "^26.0.0"
     pretty-format "^26.0.0"
 
+"@types/klaw@^3.0.2":
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/@types/klaw/-/klaw-3.0.2.tgz#ce9cf2c0566b806d4fe86eb07082b483ad1ee3f6"
+  integrity sha512-v8smJUQ5SuoCh1EZ5B429DTGFDE0URnC9ix3wJpTB8Ofk7Rgi5Hj/jm9GffavHiXPeYgPRe3ASBfB6LT6ytceg==
+  dependencies:
+    "@types/node" "*"
+
 "@types/node@*", "@types/node@^16.0.0":
   version "16.0.0"
   resolved "https://registry.npmjs.org/@types/node/-/node-16.0.0.tgz#067a6c49dc7a5c2412a505628e26902ae967bf6f"
@@ -1977,7 +1984,7 @@ globals@^11.1.0:
   resolved "https://registry.npmjs.org/globals/-/globals-11.12.0.tgz#ab8795338868a0babd8525758018c2a7eb95c42e"
   integrity sha512-WOBp/EEGUiIsJSp7wcv/y6MO+lV9UoncWqxuFfm8eBwzWNgyfBd6Gz+IeKQ9jCmyhoH99g15M3T+QaVHFjizVA==
 
-graceful-fs@^4.1.6, graceful-fs@^4.2.0, graceful-fs@^4.2.4:
+graceful-fs@^4.1.6, graceful-fs@^4.1.9, graceful-fs@^4.2.0, graceful-fs@^4.2.4:
   version "4.2.6"
   resolved "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.6.tgz#ff040b2b0853b23c3d31027523706f1885d76bee"
   integrity sha512-nTnJ528pbqxYanhpDYsi4Rd8MAeaBA67+RZ10CM1m3bTAVFEDcd5AuA4a6W5YkGZ1iNXHzZz8T6TBKLeBuNriQ==
@@ -2664,6 +2671,13 @@ jsonfile@^6.0.1:
   optionalDependencies:
     graceful-fs "^4.1.6"
 
+klaw@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/klaw/-/klaw-3.0.0.tgz#b11bec9cf2492f06756d6e809ab73a2910259146"
+  integrity sha512-0Fo5oir+O9jnXu5EefYbVK+mHMBeEVEy2cmctR1O1NECcCkPRreJKrS6Qt/j3KC2C148Dfo9i3pCmCMsdqGr0g==
+  dependencies:
+    graceful-fs "^4.1.9"
+
 kleur@^3.0.3:
   version "3.0.3"
   resolved "https://registry.npmjs.org/kleur/-/kleur-3.0.3.tgz#a79c9ecc86ee1ce3fa6206d1216c501f147fc07e"