diff --git a/cmd/nginx/Dockerfile b/cmd/nginx/Dockerfile
index 0fdd591..74c237f 100644
--- a/cmd/nginx/Dockerfile
+++ b/cmd/nginx/Dockerfile
@@ -1,5 +1,5 @@
 # Build fronend
-FROM node:8-slim AS frontend_builder
+FROM node:11-slim AS builder
 WORKDIR /app
 COPY . .
 RUN npm install
@@ -11,5 +11,5 @@ FROM umputun/nginx-le:latest
 COPY cmd/nginx/podsync.conf /etc/nginx/service.conf
 COPY cmd/nginx/robots.txt /var/www/
 
-COPY --from=frontend_builder /app/templates/ /var/www/
-COPY --from=frontend_builder /app/dist/ /var/www/assets/
+COPY --from=builder /app/dist/html/ /var/www/
+COPY --from=builder /app/dist/assets/ /var/www/assets/
diff --git a/gulpfile.js b/gulpfile.js
index 8114d58..f961fbe 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -12,37 +12,44 @@ var gulp = require('gulp'),
 
 abs = path.join(process.cwd(), 'assets');
 
-gulp.task('clean', function () {
+// Clean up artifacts
+const clean = function() {
     return del(['./dist/**/*'])
-});
+};
 
 // Minify images and output to ./dist folder
-gulp.task('img', ['clean'], function() {
+const img = function() {
     return gulp.src('./assets/**/*.{png,ico}')
         .pipe(imagemin())
         .pipe(size())
-        .pipe(gulp.dest('./dist'))
-});
+        .pipe(gulp.dest('./dist/assets/'))
+};
 
 // Minify scripts, build manifest.json and output to ./dist folder
-gulp.task('js+css', ['clean', 'img'], function() {
+const scripts = function() {
     return gulp.src(['./assets/js/**/*.js', './assets/css/**/*.css'], {base: abs})
         .pipe(gulpif(/js$/, uglify()))
         .pipe(gulpif(/css$/, autoprefixer()))
         .pipe(gulpif(/css$/, cleancss()))
         .pipe(rev())
         .pipe(size())
-        .pipe(gulp.dest('./dist'))
+        .pipe(gulp.dest('./dist/assets'))
         .pipe(rev.manifest('manifest.json', {merge: true}))
-        .pipe(gulp.dest('./dist'));
-});
+        .pipe(gulp.dest('./dist/assets'));
+};
 
 // Rewrite occurrences of scripts in template files
-gulp.task('patch', ['js+css'], function() {
-    var manifest = gulp.src('./dist/manifest.json');
+const patch = function() {
+    var manifest = gulp.src('./dist/assets/manifest.json');
     return gulp.src('./templates/index.html')
         .pipe(revreplace({manifest: manifest}))
-        .pipe(gulp.dest('./templates/'))
-});
+        .pipe(gulp.dest('./dist/html/'))
+};
 
-gulp.task('default', ['js+css']);
\ No newline at end of file
+exports.default = gulp.series(
+    clean,
+    gulp.parallel(
+        img,
+        gulp.series(scripts, patch)
+    ),
+);
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 3a6a1fd..c74ae1a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -58,6 +58,25 @@
       "integrity": "sha1-qCJQ3bABXponyoLoLqYDu/pF768=",
       "dev": true
     },
+    "anymatch": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-2.0.0.tgz",
+      "integrity": "sha512-5teOsQWABXHHBFP9y3skS5P3d/WfWXpv3FUpy+LorMrNYaT9pI4oLMQX7jzQ2KklNpGpWHzdCXTDT2Y3XGlZBw==",
+      "dev": true,
+      "requires": {
+        "micromatch": "^3.1.4",
+        "normalize-path": "^2.1.1"
+      }
+    },
+    "append-buffer": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/append-buffer/-/append-buffer-1.0.2.tgz",
+      "integrity": "sha1-2CIM9GYIFSXv6lBhTz3mUU36WPE=",
+      "dev": true,
+      "requires": {
+        "buffer-equal": "^1.0.0"
+      }
+    },
     "archive-type": {
       "version": "3.2.0",
       "resolved": "https://registry.npmjs.org/archive-type/-/archive-type-3.2.0.tgz",
@@ -97,12 +116,30 @@
       "integrity": "sha1-1kYQdP6/7HHn4VI1dhoyml3HxSA=",
       "dev": true
     },
+    "arr-filter": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/arr-filter/-/arr-filter-1.1.2.tgz",
+      "integrity": "sha1-Q/3d0JHo7xGqTEXZzcGOLf8XEe4=",
+      "dev": true,
+      "requires": {
+        "make-iterator": "^1.0.0"
+      }
+    },
     "arr-flatten": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/arr-flatten/-/arr-flatten-1.1.0.tgz",
       "integrity": "sha512-L3hKV5R/p5o81R7O02IGnwpDmkp6E982XhtbuwSe3O4qOtMMMtodicASA1Cny2U+aCXcNpml+m4dPsvsJ3jatg==",
       "dev": true
     },
+    "arr-map": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/arr-map/-/arr-map-2.0.2.tgz",
+      "integrity": "sha1-Onc0X/wc814qkYJWAfnljy4kysQ=",
+      "dev": true,
+      "requires": {
+        "make-iterator": "^1.0.0"
+      }
+    },
     "arr-union": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/arr-union/-/arr-union-3.1.0.tgz",
@@ -127,12 +164,66 @@
       "integrity": "sha1-3wEKoSh+Fku9pvlyOwqWoexBh6E=",
       "dev": true
     },
+    "array-initial": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/array-initial/-/array-initial-1.1.0.tgz",
+      "integrity": "sha1-L6dLJnOTccOUe9enrcc74zSz15U=",
+      "dev": true,
+      "requires": {
+        "array-slice": "^1.0.0",
+        "is-number": "^4.0.0"
+      },
+      "dependencies": {
+        "is-number": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/is-number/-/is-number-4.0.0.tgz",
+          "integrity": "sha512-rSklcAIlf1OmFdyAqbnWTLVelsQ58uvZ66S/ZyawjWqIviTWCjg2PzVGw8WUA+nNuPTqb4wgA+NszrJ+08LlgQ==",
+          "dev": true
+        }
+      }
+    },
+    "array-last": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/array-last/-/array-last-1.3.0.tgz",
+      "integrity": "sha512-eOCut5rXlI6aCOS7Z7kCplKRKyiFQ6dHFBem4PwlwKeNFk2/XxTrhRh5T9PyaEWGy/NHTZWbY+nsZlNFJu9rYg==",
+      "dev": true,
+      "requires": {
+        "is-number": "^4.0.0"
+      },
+      "dependencies": {
+        "is-number": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/is-number/-/is-number-4.0.0.tgz",
+          "integrity": "sha512-rSklcAIlf1OmFdyAqbnWTLVelsQ58uvZ66S/ZyawjWqIviTWCjg2PzVGw8WUA+nNuPTqb4wgA+NszrJ+08LlgQ==",
+          "dev": true
+        }
+      }
+    },
     "array-slice": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/array-slice/-/array-slice-1.1.0.tgz",
       "integrity": "sha512-B1qMD3RBP7O8o0H2KbrXDyB0IccejMF15+87Lvlor12ONPRHP6gTjXMNkt/d3ZuOGbAe66hFmaCfECI24Ufp6w==",
       "dev": true
     },
+    "array-sort": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/array-sort/-/array-sort-1.0.0.tgz",
+      "integrity": "sha512-ihLeJkonmdiAsD7vpgN3CRcx2J2S0TiYW+IS/5zHBI7mKUq3ySvBdzzBfD236ubDBQFiiyG3SWCPc+msQ9KoYg==",
+      "dev": true,
+      "requires": {
+        "default-compare": "^1.0.0",
+        "get-value": "^2.0.6",
+        "kind-of": "^5.0.2"
+      },
+      "dependencies": {
+        "kind-of": {
+          "version": "5.1.0",
+          "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-5.1.0.tgz",
+          "integrity": "sha512-NGEErnH6F2vUuXDh+OlbcKW7/wOcfdRHaZ7VWtqCztfHri/++YKmP51OdWeGPuqCOba6kk2OTe5d02VmTB80Pw==",
+          "dev": true
+        }
+      }
+    },
     "array-union": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/array-union/-/array-union-1.0.2.tgz",
@@ -160,6 +251,32 @@
       "integrity": "sha1-WWZ/QfrdTyDMvCu5a41Pf3jsA2c=",
       "dev": true
     },
+    "async-done": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/async-done/-/async-done-1.3.1.tgz",
+      "integrity": "sha512-R1BaUeJ4PMoLNJuk+0tLJgjmEqVsdN118+Z8O+alhnQDQgy0kmD5Mqi0DNEmMx2LM0Ed5yekKu+ZXYvIHceicg==",
+      "dev": true,
+      "requires": {
+        "end-of-stream": "^1.1.0",
+        "once": "^1.3.2",
+        "process-nextick-args": "^1.0.7",
+        "stream-exhaust": "^1.0.1"
+      },
+      "dependencies": {
+        "process-nextick-args": {
+          "version": "1.0.7",
+          "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-1.0.7.tgz",
+          "integrity": "sha1-FQ4gt1ZZCtP5EJPyWk8q2L/zC6M=",
+          "dev": true
+        }
+      }
+    },
+    "async-each": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/async-each/-/async-each-1.0.1.tgz",
+      "integrity": "sha1-GdOGodntxufByF04iu28xW0zYC0=",
+      "dev": true
+    },
     "async-each-series": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/async-each-series/-/async-each-series-1.1.0.tgz",
@@ -167,6 +284,15 @@
       "dev": true,
       "optional": true
     },
+    "async-settle": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/async-settle/-/async-settle-1.0.0.tgz",
+      "integrity": "sha1-HQqRS7Aldb7IqPOnTlCA9yssDGs=",
+      "dev": true,
+      "requires": {
+        "async-done": "^1.2.2"
+      }
+    },
     "atob": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/atob/-/atob-2.1.2.tgz",
@@ -187,6 +313,23 @@
         "postcss-value-parser": "^3.2.3"
       }
     },
+    "bach": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/bach/-/bach-1.2.0.tgz",
+      "integrity": "sha1-Szzpa/JxNPeaG0FKUcFONMO9mIA=",
+      "dev": true,
+      "requires": {
+        "arr-filter": "^1.1.1",
+        "arr-flatten": "^1.0.1",
+        "arr-map": "^2.0.0",
+        "array-each": "^1.0.0",
+        "array-initial": "^1.0.0",
+        "array-last": "^1.1.1",
+        "async-done": "^1.2.2",
+        "async-settle": "^1.0.0",
+        "now-and-later": "^2.0.0"
+      }
+    },
     "balanced-match": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
@@ -338,6 +481,12 @@
         "os-filter-obj": "^1.0.0"
       }
     },
+    "binary-extensions": {
+      "version": "1.12.0",
+      "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-1.12.0.tgz",
+      "integrity": "sha512-DYWGk01lDcxeS/K9IHPGWfT8PsJmbXRtRd2Sx72Tnb8pcYZQFF1oSDb8hJtS1vhp212q1Rzi5dUf9+nq0o9UIg==",
+      "dev": true
+    },
     "bl": {
       "version": "1.2.2",
       "resolved": "https://registry.npmjs.org/bl/-/bl-1.2.2.tgz",
@@ -451,6 +600,12 @@
       "integrity": "sha1-DTM+PwDqxQqhRUq9MO+MKl2ackI=",
       "dev": true
     },
+    "buffer-equal": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/buffer-equal/-/buffer-equal-1.0.0.tgz",
+      "integrity": "sha1-WWFrSYME1Var1GaWayLu2j7KX74=",
+      "dev": true
+    },
     "buffer-fill": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/buffer-fill/-/buffer-fill-1.0.0.tgz",
@@ -614,6 +769,38 @@
         "supports-color": "^2.0.0"
       }
     },
+    "chokidar": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-2.0.4.tgz",
+      "integrity": "sha512-z9n7yt9rOvIJrMhvDtDictKrkFHeihkNl6uWMmZlmL6tJtX9Cs+87oK+teBx+JIgzvbX3yZHT3eF8vpbDxHJXQ==",
+      "dev": true,
+      "requires": {
+        "anymatch": "^2.0.0",
+        "async-each": "^1.0.0",
+        "braces": "^2.3.0",
+        "fsevents": "^1.2.2",
+        "glob-parent": "^3.1.0",
+        "inherits": "^2.0.1",
+        "is-binary-path": "^1.0.0",
+        "is-glob": "^4.0.0",
+        "lodash.debounce": "^4.0.8",
+        "normalize-path": "^2.1.1",
+        "path-is-absolute": "^1.0.0",
+        "readdirp": "^2.0.0",
+        "upath": "^1.0.5"
+      },
+      "dependencies": {
+        "is-glob": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-4.0.0.tgz",
+          "integrity": "sha1-lSHHaEXMJhCoUgPd8ICpWML/q8A=",
+          "dev": true,
+          "requires": {
+            "is-extglob": "^2.1.1"
+          }
+        }
+      }
+    },
     "clap": {
       "version": "1.2.3",
       "resolved": "https://registry.npmjs.org/clap/-/clap-1.2.3.tgz",
@@ -664,6 +851,17 @@
         }
       }
     },
+    "cliui": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/cliui/-/cliui-3.2.0.tgz",
+      "integrity": "sha1-EgYBU3qRbSmUD5NNo7SNWFo5IT0=",
+      "dev": true,
+      "requires": {
+        "string-width": "^1.0.1",
+        "strip-ansi": "^3.0.1",
+        "wrap-ansi": "^2.0.0"
+      }
+    },
     "clone": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/clone/-/clone-1.0.4.tgz",
@@ -741,6 +939,23 @@
         "q": "^1.1.2"
       }
     },
+    "code-point-at": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
+      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
+      "dev": true
+    },
+    "collection-map": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/collection-map/-/collection-map-1.0.0.tgz",
+      "integrity": "sha1-rqDwb40mx4DCt1SUOFVEsiVa8Yw=",
+      "dev": true,
+      "requires": {
+        "arr-map": "^2.0.2",
+        "for-own": "^1.0.0",
+        "make-iterator": "^1.0.0"
+      }
+    },
     "collection-visit": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/collection-visit/-/collection-visit-1.0.0.tgz",
@@ -863,6 +1078,16 @@
       "integrity": "sha1-Z29us8OZl8LuGsOpJP1hJHSPV40=",
       "dev": true
     },
+    "copy-props": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/copy-props/-/copy-props-2.0.4.tgz",
+      "integrity": "sha512-7cjuUME+p+S3HZlbllgsn2CDwS+5eCCX16qBgNC4jgSTf49qR1VKy/Zhl400m0IQXl/bPGEVqncgUUMjrr4s8A==",
+      "dev": true,
+      "requires": {
+        "each-props": "^1.3.0",
+        "is-plain-object": "^2.0.1"
+      }
+    },
     "core-util-is": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
@@ -923,6 +1148,15 @@
         "array-find-index": "^1.0.1"
       }
     },
+    "d": {
+      "version": "1.0.0",
+      "resolved": "http://registry.npmjs.org/d/-/d-1.0.0.tgz",
+      "integrity": "sha1-dUu1v+VUUdpppYuU1F9MWwRi1Y8=",
+      "dev": true,
+      "requires": {
+        "es5-ext": "^0.10.9"
+      }
+    },
     "dateformat": {
       "version": "2.2.0",
       "resolved": "https://registry.npmjs.org/dateformat/-/dateformat-2.2.0.tgz",
@@ -1439,13 +1673,36 @@
       "integrity": "sha512-LOHxIOaPYdHlJRtCQfDIVZtfw/ufM8+rVj649RIHzcm/vGwQRXFt6OPqIFWsm2XEMrNIEtWR64sY1LEKD2vAOA==",
       "dev": true
     },
-    "defaults": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/defaults/-/defaults-1.0.3.tgz",
-      "integrity": "sha1-xlYFHpgX2f8I7YgUd/P+QBnz730=",
+    "default-compare": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/default-compare/-/default-compare-1.0.0.tgz",
+      "integrity": "sha512-QWfXlM0EkAbqOCbD/6HjdwT19j7WCkMyiRhWilc4H9/5h/RzTF9gv5LYh1+CmDV5d1rki6KAWLtQale0xt20eQ==",
       "dev": true,
       "requires": {
-        "clone": "^1.0.2"
+        "kind-of": "^5.0.2"
+      },
+      "dependencies": {
+        "kind-of": {
+          "version": "5.1.0",
+          "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-5.1.0.tgz",
+          "integrity": "sha512-NGEErnH6F2vUuXDh+OlbcKW7/wOcfdRHaZ7VWtqCztfHri/++YKmP51OdWeGPuqCOba6kk2OTe5d02VmTB80Pw==",
+          "dev": true
+        }
+      }
+    },
+    "default-resolution": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/default-resolution/-/default-resolution-2.0.0.tgz",
+      "integrity": "sha1-vLgrqnKtebQmp2cy8aga1t8m1oQ=",
+      "dev": true
+    },
+    "define-properties": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/define-properties/-/define-properties-1.1.3.tgz",
+      "integrity": "sha512-3MqfYKj2lLzdMSf8ZIZE/V+Zuy+BgD6f164e8K2w7dgnpKArBDerGYpM46IYYcjnkdPNMjPk9A6VFB8+3SKlXQ==",
+      "dev": true,
+      "requires": {
+        "object-keys": "^1.0.12"
       }
     },
     "define-property": {
@@ -1503,12 +1760,6 @@
         "rimraf": "^2.2.8"
       }
     },
-    "deprecated": {
-      "version": "0.0.1",
-      "resolved": "https://registry.npmjs.org/deprecated/-/deprecated-0.0.1.tgz",
-      "integrity": "sha1-+cmvVGSvoeepcUWKi97yqpTVuxk=",
-      "dev": true
-    },
     "detect-file": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/detect-file/-/detect-file-1.0.0.tgz",
@@ -1873,6 +2124,16 @@
         "set-immediate-shim": "^1.0.0"
       }
     },
+    "each-props": {
+      "version": "1.3.2",
+      "resolved": "https://registry.npmjs.org/each-props/-/each-props-1.3.2.tgz",
+      "integrity": "sha512-vV0Hem3zAGkJAyU7JSjixeU66rwdynTAa1vofCrSA5fEln+m67Az9CcnkVD776/fsN/UjIWmBDoNRS6t6G9RfA==",
+      "dev": true,
+      "requires": {
+        "is-plain-object": "^2.0.1",
+        "object.defaults": "^1.1.0"
+      }
+    },
     "electron-to-chromium": {
       "version": "1.3.61",
       "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.3.61.tgz",
@@ -1880,23 +2141,12 @@
       "dev": true
     },
     "end-of-stream": {
-      "version": "0.1.5",
-      "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-0.1.5.tgz",
-      "integrity": "sha1-jhdyBsPICDfYVjLouTWd/osvbq8=",
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.1.tgz",
+      "integrity": "sha512-1MkrZNvWTKCaigbn+W15elq2BB/L22nqrSY5DKlo3X6+vclJm8Bb5djXJBmEX6fS3+zCh/F4VBK5Z2KxJt4s2Q==",
       "dev": true,
       "requires": {
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@@ -5839,6 +6965,15 @@
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@@ -5989,6 +7163,12 @@
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+      "resolved": "https://registry.npmjs.org/upath/-/upath-1.1.0.tgz",
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-      "integrity": "sha1-qrGh+jDUX4jdMhFIh1rALAtV5bQ=",
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       "dev": true,
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     "vali-date": {
@@ -6064,6 +7238,12 @@
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@@ -6235,57 +7415,145 @@
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-      "integrity": "sha1-mmhRzhysHBzqX+hsCTHWIMLPqeY=",
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/vinyl-fs/-/vinyl-fs-3.0.3.tgz",
+      "integrity": "sha512-vIu34EkyNyJxmP0jscNzWBSygh7VWhqun6RmqVfXePrOwi9lhvRs//dOaGOTRUQr4tx7/zd26Tk5WeSVZitgng==",
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-        "mkdirp": "^0.5.0",
-        "strip-bom": "^1.0.0",
-        "through2": "^0.6.1",
-        "vinyl": "^0.4.0"
+        "fs-mkdirp-stream": "^1.0.0",
+        "glob-stream": "^6.1.0",
+        "graceful-fs": "^4.0.0",
+        "is-valid-glob": "^1.0.0",
+        "lazystream": "^1.0.0",
+        "lead": "^1.0.0",
+        "object.assign": "^4.0.4",
+        "pumpify": "^1.3.5",
+        "readable-stream": "^2.3.3",
+        "remove-bom-buffer": "^3.0.0",
+        "remove-bom-stream": "^1.2.0",
+        "resolve-options": "^1.1.0",
+        "through2": "^2.0.0",
+        "to-through": "^2.0.0",
+        "value-or-function": "^3.0.0",
+        "vinyl": "^2.0.0",
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-          "resolved": "https://registry.npmjs.org/clone/-/clone-0.2.0.tgz",
-          "integrity": "sha1-xhJqkK1Pctv1rNskPMN3JP6T/B8=",
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/clone/-/clone-2.1.2.tgz",
+          "integrity": "sha1-G39Ln1kfHo+DZwQBYANFoCiHQ18=",
+          "dev": true
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+        "clone-stats": {
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+          "resolved": "https://registry.npmjs.org/clone-stats/-/clone-stats-1.0.0.tgz",
+          "integrity": "sha1-s3gt/4u1R04Yuba/D9/ngvh3doA=",
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+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/is-valid-glob/-/is-valid-glob-1.0.0.tgz",
+          "integrity": "sha1-Kb8+/3Ab4tTTFdusw5vDn+j2Aao=",
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-          "integrity": "sha1-Elgg40vIQtLyqq+v5MKRbuMsFXw=",
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-            "isarray": "0.0.1",
-            "string_decoder": "~0.10.x"
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+            "safe-buffer": "~5.1.1",
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-          "integrity": "sha1-QaucZ7KdVyCQcUEOHXp6lozTrUg=",
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           "dev": true,
           "requires": {
-            "clone": "^0.2.0",
-            "clone-stats": "^0.0.1"
+            "clone": "^2.1.1",
+            "clone-buffer": "^1.0.0",
+            "clone-stats": "^1.0.0",
+            "cloneable-readable": "^1.0.0",
+            "remove-trailing-separator": "^1.0.1",
+            "replace-ext": "^1.0.0"
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+    "vinyl-sourcemap": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/vinyl-sourcemap/-/vinyl-sourcemap-1.1.0.tgz",
+      "integrity": "sha1-kqgAWTo4cDqM2xHYswCtS+Y7PhY=",
+      "dev": true,
+      "requires": {
+        "append-buffer": "^1.0.2",
+        "convert-source-map": "^1.5.0",
+        "graceful-fs": "^4.1.6",
+        "normalize-path": "^2.1.1",
+        "now-and-later": "^2.0.0",
+        "remove-bom-buffer": "^3.0.0",
+        "vinyl": "^2.0.0"
+      },
+      "dependencies": {
+        "clone": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/clone/-/clone-2.1.2.tgz",
+          "integrity": "sha1-G39Ln1kfHo+DZwQBYANFoCiHQ18=",
+          "dev": true
+        },
+        "clone-stats": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/clone-stats/-/clone-stats-1.0.0.tgz",
+          "integrity": "sha1-s3gt/4u1R04Yuba/D9/ngvh3doA=",
+          "dev": true
+        },
+        "replace-ext": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/replace-ext/-/replace-ext-1.0.0.tgz",
+          "integrity": "sha1-3mMSg3P8v3w8z6TeWkgMRaZ5WOs=",
+          "dev": true
+        },
+        "vinyl": {
+          "version": "2.2.0",
+          "resolved": "https://registry.npmjs.org/vinyl/-/vinyl-2.2.0.tgz",
+          "integrity": "sha512-MBH+yP0kC/GQ5GwBqrTPTzEfiiLjta7hTtvQtbxBgTeSXsmKQRQecjibMbxIXzVT3Y9KJK+drOz1/k+vsu8Nkg==",
+          "dev": true,
+          "requires": {
+            "clone": "^2.1.1",
+            "clone-buffer": "^1.0.0",
+            "clone-stats": "^1.0.0",
+            "cloneable-readable": "^1.0.0",
+            "remove-trailing-separator": "^1.0.1",
+            "replace-ext": "^1.0.0"
           }
         }
       }
@@ -6324,6 +7592,22 @@
         "isexe": "^2.0.0"
       }
     },
+    "which-module": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/which-module/-/which-module-1.0.0.tgz",
+      "integrity": "sha1-u6Y8qGGUiZT/MHc2CJ47lgJsKk8=",
+      "dev": true
+    },
+    "wrap-ansi": {
+      "version": "2.1.0",
+      "resolved": "http://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
+      "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
+      "dev": true,
+      "requires": {
+        "string-width": "^1.0.1",
+        "strip-ansi": "^3.0.1"
+      }
+    },
     "wrap-fn": {
       "version": "0.1.5",
       "resolved": "https://registry.npmjs.org/wrap-fn/-/wrap-fn-0.1.5.tgz",
@@ -6345,6 +7629,12 @@
       "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68=",
       "dev": true
     },
+    "y18n": {
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-3.2.1.tgz",
+      "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE=",
+      "dev": true
+    },
     "yallist": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
@@ -6352,6 +7642,52 @@
       "dev": true,
       "optional": true
     },
+    "yargs": {
+      "version": "7.1.0",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-7.1.0.tgz",
+      "integrity": "sha1-a6MY6xaWFyf10oT46gA+jWFU0Mg=",
+      "dev": true,
+      "requires": {
+        "camelcase": "^3.0.0",
+        "cliui": "^3.2.0",
+        "decamelize": "^1.1.1",
+        "get-caller-file": "^1.0.1",
+        "os-locale": "^1.4.0",
+        "read-pkg-up": "^1.0.1",
+        "require-directory": "^2.1.1",
+        "require-main-filename": "^1.0.1",
+        "set-blocking": "^2.0.0",
+        "string-width": "^1.0.2",
+        "which-module": "^1.0.0",
+        "y18n": "^3.2.1",
+        "yargs-parser": "^5.0.0"
+      },
+      "dependencies": {
+        "camelcase": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-3.0.0.tgz",
+          "integrity": "sha1-MvxLn82vhF/N9+c7uXysImHwqwo=",
+          "dev": true
+        }
+      }
+    },
+    "yargs-parser": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-5.0.0.tgz",
+      "integrity": "sha1-J17PDX/+Bcd+ZOfIbkzZS/DhIoo=",
+      "dev": true,
+      "requires": {
+        "camelcase": "^3.0.0"
+      },
+      "dependencies": {
+        "camelcase": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-3.0.0.tgz",
+          "integrity": "sha1-MvxLn82vhF/N9+c7uXysImHwqwo=",
+          "dev": true
+        }
+      }
+    },
     "yauzl": {
       "version": "2.10.0",
       "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.10.0.tgz",
diff --git a/package.json b/package.json
index ad57d4c..f4c345e 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
   "dependencies": {},
   "devDependencies": {
     "del": "^3.0.0",
-    "gulp": "^3.9.1",
+    "gulp": "^4.0.0",
     "gulp-autoprefixer": "^4.0.0",
     "gulp-clean-css": "^3.7.0",
     "gulp-if": "^2.0.2",
@@ -17,7 +17,7 @@
     "gulp-uglify": "^3.0.0"
   },
   "scripts": {
-    "build": "gulp -v && gulp patch",
+    "build": "gulp -v && gulp",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "repository": {