diff --git a/gulpfile.js b/gulpfile.js
deleted file mode 100644
index 69f39c8..0000000
--- a/gulpfile.js
+++ /dev/null
@@ -1,39 +0,0 @@
-const gulp = require('gulp');
-const concat = require('gulp-concat');
-const sass = require('gulp-sass');
-const autoprefixer = require('gulp-autoprefixer');
-
-const ENV = process.env.BUILD_ENV || 'dev';
-
-const SASS_SOURCE_PATH = './source/_assets/**/*.scss';
-const SASS_DEST_PATH = `./output_${ENV}`;
-const SASS_FILE_NAME = 'app.css';
-
-const SCRIPT_SOURCE_PATH = './source/_assets/**/*.js';
-const SCRIPT_DEST_PATH = `./output_${ENV}`;
-const SCRIPT_FILE_NAME = 'app.js';
-
-const SASS_OPTIONS = {
-  outputStyle: ENV === 'prod' ? 'compressed' : 'expanded',
-};
-
-const AUTOPREFIX_OPTIONS = {
-  browsers: ['last 2 versions'],
-};
-
-gulp.task('build', function () {
-  gulp.src(SASS_SOURCE_PATH)
-    .pipe(sass(SASS_OPTIONS).on('error', sass.logError))
-    .pipe(autoprefixer(AUTOPREFIX_OPTIONS))
-    .pipe(concat(SASS_FILE_NAME))
-    .pipe(gulp.dest(SASS_DEST_PATH))
-  ;
-  gulp.src(SCRIPT_SOURCE_PATH)
-    .pipe(concat(SCRIPT_FILE_NAME))
-    .pipe(gulp.dest(SCRIPT_DEST_PATH))
-  ;
-});
-
-gulp.task('build:watch', function () {
-  gulp.watch(SASS_SOURCE_PATH, ['build']);
-});