diff --git a/extension/gulpfile.babel.js b/extension/gulpfile.babel.js
index 11205deb..7732c595 100644
--- a/extension/gulpfile.babel.js
+++ b/extension/gulpfile.babel.js
@@ -15,26 +15,6 @@ function copy(dest) {
   gulp.src('./src/assets/**/*').pipe(gulp.dest(dest));
 }
 
-/*
- * common tasks
- */
-gulp.task('replace-webpack-code', (done) => {
-  const replaceTasks = [
-    {
-      from: './webpack/replace/JsonpMainTemplate.runtime.js',
-      to: './node_modules/webpack/lib/JsonpMainTemplate.runtime.js',
-    },
-    {
-      from: './webpack/replace/log-apply-result.js',
-      to: './node_modules/webpack/hot/log-apply-result.js',
-    },
-  ];
-  replaceTasks.forEach((task) =>
-    fs.writeFileSync(task.to, fs.readFileSync(task.from))
-  );
-  done();
-});
-
 /*
  * dev tasks
  */
@@ -173,7 +153,6 @@ gulp.task('test:electron', () => {
 gulp.task(
   'default',
   gulp.parallel(
-    'replace-webpack-code',
     'webpack:dev',
     'views:dev',
     'copy:dev',
@@ -184,7 +163,6 @@ gulp.task(
 gulp.task(
   'build:extension',
   gulp.parallel(
-    'replace-webpack-code',
     'webpack:build:extension',
     'views:build:extension',
     'copy:build:extension'
diff --git a/extension/webpack/replace/JsonpMainTemplate.runtime.js b/extension/webpack/replace/JsonpMainTemplate.runtime.js
deleted file mode 100644
index 130094c0..00000000
--- a/extension/webpack/replace/JsonpMainTemplate.runtime.js
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
-	MIT License http://www.opensource.org/licenses/mit-license.php
-	Author Tobias Koppers @sokra
-*/
-/*globals hotAddUpdateChunk parentHotUpdateCallback document XMLHttpRequest $require$ $hotChunkFilename$ $hotMainFilename$ */
-module.exports = function () {
-  function webpackHotUpdateCallback(chunkId, moreModules) {
-    // eslint-disable-line no-unused-vars
-    hotAddUpdateChunk(chunkId, moreModules);
-    if (parentHotUpdateCallback) parentHotUpdateCallback(chunkId, moreModules);
-  }
-
-  var context = this;
-  function evalCode(code, context) {
-    return function () {
-      return eval(code);
-    }.call(context);
-  }
-
-  context.hotDownloadUpdateChunk = function (chunkId) {
-    // eslint-disable-line no-unused-vars
-    var src =
-      __webpack_require__.p +
-      '' +
-      chunkId +
-      '.' +
-      hotCurrentHash +
-      '.hot-update.js';
-    var request = new XMLHttpRequest();
-
-    request.onload = function () {
-      evalCode(this.responseText, context);
-    };
-    request.open('get', src, true);
-    request.send();
-  };
-
-  function hotDownloadManifest(callback) {
-    // eslint-disable-line no-unused-vars
-    if (typeof XMLHttpRequest === 'undefined')
-      return callback(new Error('No browser support'));
-    try {
-      var request = new XMLHttpRequest();
-      var requestPath = $require$.p + $hotMainFilename$;
-      request.open('GET', requestPath, true);
-      request.timeout = 10000;
-      request.send(null);
-    } catch (err) {
-      return callback(err);
-    }
-    request.onreadystatechange = function () {
-      if (request.readyState !== 4) return;
-      if (request.status === 0) {
-        // timeout
-        callback(
-          new Error('Manifest request to ' + requestPath + ' timed out.')
-        );
-      } else if (request.status === 404) {
-        // no update available
-        callback();
-      } else if (request.status !== 200 && request.status !== 304) {
-        // other failure
-        callback(new Error('Manifest request to ' + requestPath + ' failed.'));
-      } else {
-        // success
-        try {
-          var update = JSON.parse(request.responseText);
-        } catch (e) {
-          callback(e);
-          return;
-        }
-        callback(null, update);
-      }
-    };
-  }
-};
diff --git a/extension/webpack/replace/log-apply-result.js b/extension/webpack/replace/log-apply-result.js
deleted file mode 100644
index bf379810..00000000
--- a/extension/webpack/replace/log-apply-result.js
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
-	MIT License http://www.opensource.org/licenses/mit-license.php
-	Author Tobias Koppers @sokra
-*/
-module.exports = function (updatedModules, renewedModules) {
-  var unacceptedModules = updatedModules.filter(function (moduleId) {
-    return renewedModules && renewedModules.indexOf(moduleId) < 0;
-  });
-
-  if (unacceptedModules.length > 0) {
-    console.warn(
-      "[HMR] The following modules couldn't be hot updated: (They would need a full reload!)"
-    );
-    unacceptedModules.forEach(function (moduleId) {
-      console.warn('[HMR]  - ' + moduleId);
-    });
-
-    if (chrome && chrome.runtime && chrome.runtime.reload) {
-      console.warn('[HMR] extension reload');
-      chrome.runtime.reload();
-    } else {
-      console.warn(
-        "[HMR] Can't extension reload. not found chrome.runtime.reload."
-      );
-    }
-  }
-
-  if (!renewedModules || renewedModules.length === 0) {
-    console.log('[HMR] Nothing hot updated.');
-  } else {
-    console.log('[HMR] Updated modules:');
-    renewedModules.forEach(function (moduleId) {
-      console.log('[HMR]  - ' + moduleId);
-    });
-  }
-};