diff --git a/.travis.yml b/.travis.yml
index f3da1bd33..5df0d4691 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -26,6 +26,11 @@ services:
   - redis-server
 
 before_script:
+  # Travisはproduction環境なので(10行目により)、
+  # npm install しただけでは devDependencies はインストールされないので、
+  # --only=dev オプションを付けてそれらもインストールされるようにする:
+  - npm install --only=dev
+
   - mkdir ./.config
   - cp ./.travis/default.yml ./.config
   - cp ./.travis/test.yml ./.config
diff --git a/docs/setup.ja.md b/docs/setup.ja.md
index d0a9d79d9..fe67e3547 100644
--- a/docs/setup.ja.md
+++ b/docs/setup.ja.md
@@ -65,6 +65,8 @@ Misskeyには公式のリリースがあります。
 3. `npm install`
 
 ### 方法 2) ソースコードを利用する
+> 注: この方法では正しくビルド・動作できることは保証されません。
+
 Misskeyを手動でビルドしたい場合は、Misskeyのソースコードと依存関係をインストールした後、
 `build`コマンドを用いることができます:
 
diff --git a/gulpfile.ts b/gulpfile.ts
index 2484fa8a0..278b20bb1 100644
--- a/gulpfile.ts
+++ b/gulpfile.ts
@@ -10,7 +10,7 @@ import * as ts from 'gulp-typescript';
 import tslint from 'gulp-tslint';
 import * as es from 'event-stream';
 import cssnano = require('gulp-cssnano');
-import * as uglify from 'gulp-uglify';
+import * as uglifyComposer from 'gulp-uglify/composer';
 import pug = require('gulp-pug');
 import * as rimraf from 'rimraf';
 import * as chalk from 'chalk';
@@ -18,8 +18,11 @@ import imagemin = require('gulp-imagemin');
 import * as rename from 'gulp-rename';
 import * as mocha from 'gulp-mocha';
 import * as replace from 'gulp-replace';
+const uglifyes = require('uglify-es');
 import version from './src/version';
 
+const uglify = uglifyComposer(uglifyes, console);
+
 const env = process.env.NODE_ENV;
 const isProduction = env === 'production';
 const isDebug = !isProduction;
diff --git a/package.json b/package.json
index 492a1b642..b4bd6ee20 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,6 @@
     "config": "node ./tools/init.js",
     "start": "node ./built",
     "debug": "DEBUG=misskey:* node ./built",
-    "update": "./tools/update.sh",
     "swagger": "node ./swagger.js",
     "build": "gulp build",
     "rebuild": "gulp rebuild",
@@ -35,7 +34,6 @@
     "@types/escape-html": "0.0.19",
     "@types/event-stream": "3.3.31",
     "@types/express": "4.0.35",
-    "@types/glob": "5.0.30",
     "@types/gm": "1.17.30",
     "@types/gulp": "4.0.3",
     "@types/gulp-mocha": "0.0.30",
@@ -76,7 +74,7 @@
     "gulp-pug": "3.3.0",
     "gulp-rename": "1.2.2",
     "gulp-replace": "0.5.4",
-    "gulp-tslint": "8.0.0",
+    "gulp-tslint": "8.1.0",
     "gulp-typescript": "3.1.6",
     "gulp-uglify": "3.0.0",
     "gulp-util": "3.0.8",
@@ -87,6 +85,7 @@
     "stylus-loader": "3.0.1",
     "swagger-jsdoc": "1.9.4",
     "tslint": "5.3.2",
+    "uglify-es": "3.0.11",
     "uglify-js": "git+https://github.com/mishoo/UglifyJS2.git#harmony",
     "webpack": "2.6.0"
   },
@@ -105,14 +104,13 @@
     "debug": "2.6.8",
     "deep-equal": "1.0.1",
     "deepcopy": "0.6.3",
-    "download": "6.1.0",
+    "download": "6.2.0",
     "elasticsearch": "13.0.1",
     "escape-html": "1.0.3",
     "escape-regexp": "0.0.1",
-    "express": "4.15.2",
+    "express": "4.15.3",
     "file-type": "4.3.0",
     "fuckadblock": "3.2.1",
-    "glob": "7.1.1",
     "gm": "1.23.0",
     "inquirer": "3.0.6",
     "is-root": "1.0.0",
diff --git a/src/web/app/init.css b/src/web/app/init.css
index c92f30b44..2587f6394 100644
--- a/src/web/app/init.css
+++ b/src/web/app/init.css
@@ -1,3 +1,7 @@
+/**
+ * Boot screen style
+ */
+
 @charset 'utf-8';
 
 html {