diff --git a/gulpfile.js b/gulpfile.js
index 2c73a05..da62414 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -2,7 +2,6 @@ const gulp = require('gulp');
 const cleanCSS = require('gulp-clean-css');
 const minify = require('gulp-minify');
 const rename = require('gulp-rename');
-const runsequence = require('run-sequence');
 
 gulp.task('compressJS', () => {
     return gulp.src(['public/javascripts/*.js', '!public/javascripts/*.min.js'])
@@ -39,6 +38,6 @@ gulp.task('compressThemeCss', () => {
 });
 
 // run the tasks
-gulp.task('deploy', (callback) => {
-    runsequence('compressJS', 'compressCss', 'compressThemeCss', callback);
-});
+gulp.task('deploy', gulp.series('compressJS', 'compressCss', 'compressThemeCss', (done) => {
+    done();
+}));
diff --git a/package-lock.json b/package-lock.json
index 7d6dc3d..38342a8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "express-cart",
-  "version": "1.1.8",
+  "version": "1.1.9",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -1588,6 +1588,12 @@
       "integrity": "sha1-WWFrSYME1Var1GaWayLu2j7KX74=",
       "dev": true
     },
+    "buffer-from": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.1.tgz",
+      "integrity": "sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A==",
+      "dev": true
+    },
     "buffer-shims": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/buffer-shims/-/buffer-shims-1.0.0.tgz",
@@ -1870,18 +1876,18 @@
       }
     },
     "clean-css": {
-      "version": "4.1.9",
-      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-4.1.9.tgz",
-      "integrity": "sha1-Nc7ornaHpJuYA09w3gDE7dOCYwE=",
+      "version": "4.2.1",
+      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-4.2.1.tgz",
+      "integrity": "sha512-4ZxI6dy4lrY6FHzfiy1aEOXgu4LIsW2MhwG0VBKdcoGoH/XLFgaHSdLTGr4O8Be6A8r3MOphEiI8Gc1n0ecf3g==",
       "dev": true,
       "requires": {
-        "source-map": "0.5.x"
+        "source-map": "~0.6.0"
       },
       "dependencies": {
         "source-map": {
-          "version": "0.5.7",
-          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
-          "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=",
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
           "dev": true
         }
       }
@@ -2008,12 +2014,6 @@
       "integrity": "sha1-4+JbIHrE5wGvch4staFnksrD3Fg=",
       "dev": true
     },
-    "clone-stats": {
-      "version": "0.0.1",
-      "resolved": "https://registry.npmjs.org/clone-stats/-/clone-stats-0.0.1.tgz",
-      "integrity": "sha1-uI+UqCzzi4eR1YBG6kAprYjKmdE=",
-      "dev": true
-    },
     "cloneable-readable": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/cloneable-readable/-/cloneable-readable-1.1.2.tgz",
@@ -2161,9 +2161,9 @@
       }
     },
     "commander": {
-      "version": "2.12.2",
-      "resolved": "https://registry.npmjs.org/commander/-/commander-2.12.2.tgz",
-      "integrity": "sha512-BFnaq5ZOGcDN7FlrtBT4xxkgIToalIIxwjxLWVJ8bGTpe1LroqMiqQXdA7ygc7CRvaYS+9zfPGFnJqFSayx+AA==",
+      "version": "2.17.1",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-2.17.1.tgz",
+      "integrity": "sha512-wPMUt6FnH2yzG95SA6mzjQOEKUU3aLaDEmzs1ti+1E9h+CsrZghRlqEM/EJ4KscsQVG8uNN4uVreUeT8+drlgg==",
       "dev": true
     },
     "common-path-prefix": {
@@ -2730,41 +2730,6 @@
         "is-obj": "^1.0.0"
       }
     },
-    "duplexer2": {
-      "version": "0.0.2",
-      "resolved": "https://registry.npmjs.org/duplexer2/-/duplexer2-0.0.2.tgz",
-      "integrity": "sha1-xhTc9n4vsUmVqRcR5aYX6KYKMds=",
-      "dev": true,
-      "requires": {
-        "readable-stream": "~1.1.9"
-      },
-      "dependencies": {
-        "isarray": {
-          "version": "0.0.1",
-          "resolved": "https://registry.npmjs.org/isarray/-/isarray-0.0.1.tgz",
-          "integrity": "sha1-ihis/Kmo9Bd+Cav8YDiTmwXR7t8=",
-          "dev": true
-        },
-        "readable-stream": {
-          "version": "1.1.14",
-          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz",
-          "integrity": "sha1-fPTFTvZI44EwhMY23SB54WbAgdk=",
-          "dev": true,
-          "requires": {
-            "core-util-is": "~1.0.0",
-            "inherits": "~2.0.1",
-            "isarray": "0.0.1",
-            "string_decoder": "~0.10.x"
-          }
-        },
-        "string_decoder": {
-          "version": "0.10.31",
-          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
-          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
-          "dev": true
-        }
-      }
-    },
     "duplexer3": {
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/duplexer3/-/duplexer3-0.1.4.tgz",
@@ -4838,273 +4803,49 @@
       }
     },
     "gulp-clean-css": {
-      "version": "3.9.2",
-      "resolved": "https://registry.npmjs.org/gulp-clean-css/-/gulp-clean-css-3.9.2.tgz",
-      "integrity": "sha512-NaBtCOmhk2FP1D1pgv5jEvZaKr+6FZHvEgsl1iPGmTpyUOWpECR3Mzdciwo+hEWwtlnkZSueoAf74YCMtar48A==",
+      "version": "3.10.0",
+      "resolved": "https://registry.npmjs.org/gulp-clean-css/-/gulp-clean-css-3.10.0.tgz",
+      "integrity": "sha512-7Isf9Y690o/Q5MVjEylH1H7L8WeZ89woW7DnhD5unTintOdZb67KdOayRgp9trUFo+f9UyJtuatV42e/+kghPg==",
       "dev": true,
       "requires": {
-        "clean-css": "4.1.9",
-        "plugin-error": "0.1.2",
+        "clean-css": "4.2.1",
+        "plugin-error": "1.0.1",
         "through2": "2.0.3",
         "vinyl-sourcemaps-apply": "0.2.1"
-      }
-    },
-    "gulp-minify": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/gulp-minify/-/gulp-minify-2.1.0.tgz",
-      "integrity": "sha512-3tkw1rid8xcF7GudgFs09AgSTpMugQmVSo4Q+c9iQKiQiqadQO3ih8tcMmrbqfsy5eTDfMpqzudx21895y7zbQ==",
-      "dev": true,
-      "requires": {
-        "gulp-util": "^2.2.14",
-        "minimatch": "^3.0.2",
-        "through2": "^0.4.0",
-        "uglify-es": "^3.0.3"
       },
       "dependencies": {
-        "ansi-regex": {
-          "version": "0.2.1",
-          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-0.2.1.tgz",
-          "integrity": "sha1-DY6UaWej2BQ/k+JOKYUl/BsiNfk=",
-          "dev": true
-        },
-        "ansi-styles": {
-          "version": "1.1.0",
-          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-1.1.0.tgz",
-          "integrity": "sha1-6uy/Zs1waIJ2Cy9GkVgrj1XXp94=",
-          "dev": true
-        },
-        "chalk": {
-          "version": "0.5.1",
-          "resolved": "https://registry.npmjs.org/chalk/-/chalk-0.5.1.tgz",
-          "integrity": "sha1-Zjs6ZItotV0EaQ1JFnqoN4WPIXQ=",
+        "plugin-error": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/plugin-error/-/plugin-error-1.0.1.tgz",
+          "integrity": "sha512-L1zP0dk7vGweZME2i+EeakvUNqSrdiI3F91TwEoYiGrAfUXmVv6fJIq4g82PAXxNsWOp0J7ZqQy/3Szz0ajTxA==",
           "dev": true,
           "requires": {
-            "ansi-styles": "^1.1.0",
-            "escape-string-regexp": "^1.0.0",
-            "has-ansi": "^0.1.0",
-            "strip-ansi": "^0.3.0",
-            "supports-color": "^0.2.0"
+            "ansi-colors": "^1.0.1",
+            "arr-diff": "^4.0.0",
+            "arr-union": "^3.1.0",
+            "extend-shallow": "^3.0.2"
           }
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-        "dateformat": {
-          "version": "1.0.12",
-          "resolved": "https://registry.npmjs.org/dateformat/-/dateformat-1.0.12.tgz",
-          "integrity": "sha1-nxJLZ1lMk3/3BpMuSmQsyo27/uk=",
-          "dev": true,
-          "requires": {
-            "get-stdin": "^4.0.1",
-            "meow": "^3.3.0"
-          }
-        },
-        "gulp-util": {
-          "version": "2.2.20",
-          "resolved": "https://registry.npmjs.org/gulp-util/-/gulp-util-2.2.20.tgz",
-          "integrity": "sha1-1xRuVyiRC9jwR6awseVJvCLb1kw=",
-          "dev": true,
-          "requires": {
-            "chalk": "^0.5.0",
-            "dateformat": "^1.0.7-1.2.3",
-            "lodash._reinterpolate": "^2.4.1",
-            "lodash.template": "^2.4.1",
-            "minimist": "^0.2.0",
-            "multipipe": "^0.1.0",
-            "through2": "^0.5.0",
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-              "resolved": "https://registry.npmjs.org/through2/-/through2-0.5.1.tgz",
-              "integrity": "sha1-390BLrnHAOIyP9M084rGIqs3Lac=",
-              "dev": true,
-              "requires": {
-                "readable-stream": "~1.0.17",
-                "xtend": "~3.0.0"
-              }
-            }
-          }
-        },
-        "has-ansi": {
-          "version": "0.1.0",
-          "resolved": "https://registry.npmjs.org/has-ansi/-/has-ansi-0.1.0.tgz",
-          "integrity": "sha1-hPJlqujA5qiKEtcCKJS3VoiUxi4=",
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-          "integrity": "sha1-ihis/Kmo9Bd+Cav8YDiTmwXR7t8=",
-          "dev": true
-        },
-        "lodash._reinterpolate": {
-          "version": "2.4.1",
-          "resolved": "https://registry.npmjs.org/lodash._reinterpolate/-/lodash._reinterpolate-2.4.1.tgz",
-          "integrity": "sha1-TxInqlqHEfxjL1sHofRgequLMiI=",
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-          "integrity": "sha1-p+iIXwXmiFEUS24SqPNngCa8TFQ=",
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-          "integrity": "sha1-LOEsXghNsKV92l5dHu659dF1o7Q=",
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-          "requires": {
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-          "integrity": "sha1-Tf/lJdriuGTGbC4jxicdev3s784=",
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-              "dev": true,
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-                "object-keys": "~0.4.0"
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-          "version": "3.3.5",
-          "resolved": "https://registry.npmjs.org/uglify-es/-/uglify-es-3.3.5.tgz",
-          "integrity": "sha512-7IvaFuYtfbcXm0fGb13mmRYVQdzQDXETAtvYHbCDPt2V88Y8l2HaULOyW6ueoYA0JhGIcLK7dtHkDcBWySqnBw==",
-          "dev": true,
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-            "commander": "~2.12.1",
-            "source-map": "~0.6.1"
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-        "vinyl": {
-          "version": "0.2.3",
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-          "integrity": "sha1-vKk4IJWC7FpJrVOKAPofEl5RMlI=",
-          "dev": true,
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-        "xtend": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/xtend/-/xtend-3.0.0.tgz",
-          "integrity": "sha1-XM50B7r2Qsunvs2laBEcST9ZZlo=",
-          "dev": true
         }
       }
     },
+    "gulp-minify": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/gulp-minify/-/gulp-minify-3.1.0.tgz",
+      "integrity": "sha512-ixF41aYg+NQikI8hpoHdEclYcQkbGdXQu1CBdHaU7Epg8H6e8d2jWXw1+rBPgYwl/XpKgjHj7NI6gkhoSNSSAg==",
+      "dev": true,
+      "requires": {
+        "ansi-colors": "^1.0.1",
+        "minimatch": "^3.0.2",
+        "plugin-error": "^0.1.2",
+        "terser": "^3.7.6",
+        "through2": "^2.0.3",
+        "vinyl": "^2.1.0"
+      }
+    },
     "gulp-rename": {
-      "version": "1.2.2",
-      "resolved": "https://registry.npmjs.org/gulp-rename/-/gulp-rename-1.2.2.tgz",
-      "integrity": "sha1-OtRCh2PwXidk3sHGfYaNsnVoeBc=",
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/gulp-rename/-/gulp-rename-1.4.0.tgz",
+      "integrity": "sha512-swzbIGb/arEoFK89tPY58vg3Ok1bw+d35PfUNwWqdo7KM4jkmuGA78JiDNqR+JeZFaeeHnRg9N7aihX3YPmsyg==",
       "dev": true
     },
     "gulplog": {
@@ -6072,71 +5813,6 @@
       "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.10.tgz",
       "integrity": "sha512-UejweD1pDoXu+AD825lWwp4ZGtSwgnpZxb3JDViD7StjQz+Nb/6l093lx4OQ0foGWNRoc19mWy7BzL+UAK2iVg=="
     },
-    "lodash._escapehtmlchar": {
-      "version": "2.4.1",
-      "resolved": "https://registry.npmjs.org/lodash._escapehtmlchar/-/lodash._escapehtmlchar-2.4.1.tgz",
-      "integrity": "sha1-32fDu2t+jh6DGrSL+geVuSr+iZ0=",
-      "dev": true,
-      "requires": {
-        "lodash._htmlescapes": "~2.4.1"
-      }
-    },
-    "lodash._escapestringchar": {
-      "version": "2.4.1",
-      "resolved": "https://registry.npmjs.org/lodash._escapestringchar/-/lodash._escapestringchar-2.4.1.tgz",
-      "integrity": "sha1-7P4iYYoq3lC/7qQ5N+Ud9m8O23I=",
-      "dev": true
-    },
-    "lodash._htmlescapes": {
-      "version": "2.4.1",
-      "resolved": "https://registry.npmjs.org/lodash._htmlescapes/-/lodash._htmlescapes-2.4.1.tgz",
-      "integrity": "sha1-MtFL8IRLbeb4tioFG09nwii2JMs=",
-      "dev": true
-    },
-    "lodash._isnative": {
-      "version": "2.4.1",
-      "resolved": "https://registry.npmjs.org/lodash._isnative/-/lodash._isnative-2.4.1.tgz",
-      "integrity": "sha1-PqZAS3hKe+g2x7V1gOHN95sUgyw=",
-      "dev": true
-    },
-    "lodash._objecttypes": {
-      "version": "2.4.1",
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-      "integrity": "sha1-fAt/admKH3ZSn4kLDNsbTf7BHBE=",
-      "dev": true
-    },
-    "lodash._reunescapedhtml": {
-      "version": "2.4.1",
-      "resolved": "https://registry.npmjs.org/lodash._reunescapedhtml/-/lodash._reunescapedhtml-2.4.1.tgz",
-      "integrity": "sha1-dHxPxAED6zu4oJduVx96JlnpO6c=",
-      "dev": true,
-      "requires": {
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-        "lodash.keys": "~2.4.1"
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-          "resolved": "https://registry.npmjs.org/lodash.keys/-/lodash.keys-2.4.1.tgz",
-          "integrity": "sha1-SN6kbfj/djKxDXBrissmWR4rNyc=",
-          "dev": true,
-          "requires": {
-            "lodash._isnative": "~2.4.1",
-            "lodash._shimkeys": "~2.4.1",
-            "lodash.isobject": "~2.4.1"
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-      }
-    },
-    "lodash._shimkeys": {
-      "version": "2.4.1",
-      "resolved": "https://registry.npmjs.org/lodash._shimkeys/-/lodash._shimkeys-2.4.1.tgz",
-      "integrity": "sha1-bpzJZm/wgfC1psl4uD4kLmlJ0gM=",
-      "dev": true,
-      "requires": {
-        "lodash._objecttypes": "~2.4.1"
-      }
-    },
     "lodash.assignin": {
       "version": "4.2.0",
       "resolved": "https://registry.npmjs.org/lodash.assignin/-/lodash.assignin-4.2.0.tgz",
@@ -6209,15 +5885,6 @@
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-    "lodash.isobject": {
-      "version": "2.4.1",
-      "resolved": "https://registry.npmjs.org/lodash.isobject/-/lodash.isobject-2.4.1.tgz",
-      "integrity": "sha1-Wi5H/mmVPx7mMafrof5k0tBlWPU=",
-      "dev": true,
-      "requires": {
-        "lodash._objecttypes": "~2.4.1"
-      }
-    },
     "lodash.isplainobject": {
       "version": "4.0.6",
       "resolved": "https://registry.npmjs.org/lodash.isplainobject/-/lodash.isplainobject-4.0.6.tgz",
@@ -6253,28 +5920,6 @@
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       "integrity": "sha1-G7nzFO9ri63tE7VJFpsqlF62jk0="
     },
-    "lodash.values": {
-      "version": "2.4.1",
-      "resolved": "https://registry.npmjs.org/lodash.values/-/lodash.values-2.4.1.tgz",
-      "integrity": "sha1-q/UUQ2s8twUAFieXjLzzCxKA7qQ=",
-      "dev": true,
-      "requires": {
-        "lodash.keys": "~2.4.1"
-      },
-      "dependencies": {
-        "lodash.keys": {
-          "version": "2.4.1",
-          "resolved": "https://registry.npmjs.org/lodash.keys/-/lodash.keys-2.4.1.tgz",
-          "integrity": "sha1-SN6kbfj/djKxDXBrissmWR4rNyc=",
-          "dev": true,
-          "requires": {
-            "lodash._isnative": "~2.4.1",
-            "lodash._shimkeys": "~2.4.1",
-            "lodash.isobject": "~2.4.1"
-          }
-        }
-      }
-    },
     "longest": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/longest/-/longest-1.0.1.tgz",
@@ -6744,15 +6389,6 @@
         "minimatch": "^3.0.0"
       }
     },
-    "multipipe": {
-      "version": "0.1.2",
-      "resolved": "https://registry.npmjs.org/multipipe/-/multipipe-0.1.2.tgz",
-      "integrity": "sha1-Ko8t33Du1WTf8tV/HhoTfZ8FB4s=",
-      "dev": true,
-      "requires": {
-        "duplexer2": "0.0.2"
-      }
-    },
     "mute-stdout": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/mute-stdout/-/mute-stdout-1.0.1.tgz",
@@ -8714,6 +8350,35 @@
         "execa": "^0.7.0"
       }
     },
+    "terser": {
+      "version": "3.9.3",
+      "resolved": "https://registry.npmjs.org/terser/-/terser-3.9.3.tgz",
+      "integrity": "sha512-7CAUcdTRzfxvMUqhSDe95MQ/qVEV3JqiSB8mMGQZSe1CL7AKB1iMpF7Mj6DatC9YfG/4xxE25Egp1kxVNORdGQ==",
+      "dev": true,
+      "requires": {
+        "commander": "~2.17.1",
+        "source-map": "~0.6.1",
+        "source-map-support": "~0.5.6"
+      },
+      "dependencies": {
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+          "dev": true
+        },
+        "source-map-support": {
+          "version": "0.5.9",
+          "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.9.tgz",
+          "integrity": "sha512-gR6Rw4MvUlYy83vP0vxoVNzM6t8MUXqNuRsuBmBHQDu1Fh6X015FrLdgoDKcNdkwGubozq0P4N0Q37UyFVr1EA==",
+          "dev": true,
+          "requires": {
+            "buffer-from": "^1.0.0",
+            "source-map": "^0.6.0"
+          }
+        }
+      }
+    },
     "text-table": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/text-table/-/text-table-0.2.0.tgz",
diff --git a/package.json b/package.json
index f4d658d..a792432 100644
--- a/package.json
+++ b/package.json
@@ -53,11 +53,10 @@
     "eslint-plugin-promise": "^3.6.0",
     "eslint-plugin-standard": "^3.0.1",
     "gulp": "^4.0.0",
-    "gulp-clean-css": "^3.9.2",
-    "gulp-minify": "^2.1.0",
-    "gulp-rename": "^1.2.2",
+    "gulp-clean-css": "^3.10.0",
+    "gulp-minify": "^3.1.0",
+    "gulp-rename": "^1.4.0",
     "mongodb-uri": "^0.9.7",
-    "run-sequence": "^2.2.1",
     "supertest": "^3.0.0",
     "wait.for": "^0.6.6"
   },