diff --git a/package-lock.json b/package-lock.json
index a90eb02..1e88d69 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -32,6 +32,21 @@
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@@ -39,15 +54,26 @@
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+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
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-      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
-      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
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@@ -76,21 +102,17 @@
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-      "dev": true,
-      "optional": true
+      "dev": true
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+      "resolved": "https://registry.npmjs.org/commondir/-/commondir-1.0.1.tgz",
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@@ -105,7 +127,7 @@
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-      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
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@@ -241,6 +263,12 @@
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@@ -250,6 +278,40 @@
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+      "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
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+      "resolved": "https://registry.npmjs.org/filenamify/-/filenamify-4.3.0.tgz",
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+      "dev": true,
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+        "strip-outer": "^1.0.1",
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@@ -260,6 +322,23 @@
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+      "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-8.1.0.tgz",
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+        "jsonfile": "^4.0.0",
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-          "integrity": "sha1-VXBbzZPF82c1MMLCy8DCs63cKG4=",
-          "dev": true
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@@ -776,6 +849,23 @@
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@@ -992,6 +1070,66 @@
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+        "path-exists": {
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+          "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-4.0.0.tgz",
+          "integrity": "sha512-ak9Qy5Q7jYb2Wwcey5Fpvg2KoAc/ZIhLSLOSBmRmygPsGwkVVt0fZa0qrtMz+m6tJTAHfZQ8FnmB4MG4LWy7/w==",
+          "dev": true
+        }
+      }
+    },
     "process-nextick-args": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.1.tgz",
@@ -1004,26 +1142,6 @@
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-    "q-io": {
-      "version": "1.13.2",
-      "resolved": "https://registry.npmjs.org/q-io/-/q-io-1.13.2.tgz",
-      "integrity": "sha1-7qEw1IHdteGqG8WmaFX3OR0G8AM=",
-      "dev": true,
-      "requires": {
-        "collections": "^0.2.0",
-        "mime": "^1.2.11",
-        "mimeparse": "^0.1.4",
-        "q": "^1.0.1",
-        "qs": "^1.2.1",
-        "url2": "^0.0.0"
-      }
-    },
-    "qs": {
-      "version": "1.2.2",
-      "resolved": "https://registry.npmjs.org/qs/-/qs-1.2.2.tgz",
-      "integrity": "sha1-GbV/8k3CqZzh+L32r82ln472H4g=",
-      "dev": true
-    },
     "quick-lru": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/quick-lru/-/quick-lru-1.1.0.tgz",
@@ -1195,6 +1313,15 @@
         "get-stdin": "^4.0.1"
       }
     },
+    "strip-outer": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/strip-outer/-/strip-outer-1.0.1.tgz",
+      "integrity": "sha512-k55yxKHwaXnpYGsOzg4Vl8+tDrWylxDEpknGjhTiZB8dFRU5rTo9CAzeycivxV3s+zlTKwrs6WxMxR95n26kwg==",
+      "dev": true,
+      "requires": {
+        "escape-string-regexp": "^1.0.2"
+      }
+    },
     "tempfile": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/tempfile/-/tempfile-1.1.1.tgz",
@@ -1239,6 +1366,15 @@
       "integrity": "sha1-n5up2e+odkw4dpi8v+sshI8RrbM=",
       "dev": true
     },
+    "trim-repeated": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/trim-repeated/-/trim-repeated-1.0.0.tgz",
+      "integrity": "sha512-pkonvlKk8/ZuR0D5tLW8ljt5I8kmxp2XKymhepUeOdCEfKpZaktSArkLHZt76OB1ZvO9bssUsDty4SWhLvZpLg==",
+      "dev": true,
+      "requires": {
+        "escape-string-regexp": "^1.0.2"
+      }
+    },
     "uglify-js": {
       "version": "3.6.1",
       "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.6.1.tgz",
@@ -1250,10 +1386,10 @@
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       }
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-    "url2": {
-      "version": "0.0.0",
-      "resolved": "https://registry.npmjs.org/url2/-/url2-0.0.0.tgz",
-      "integrity": "sha1-Tqq9HVw6yQ1iq0SFyZhCKGWgSxo=",
+    "universalify": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/universalify/-/universalify-0.1.2.tgz",
+      "integrity": "sha512-rBJeI5CXAlmy1pV+617WB9J63U6XcazHHF2f2dbJix4XzpUF0RS3Zbj0FGIOCAva5P/d/GBOYaACQ1w+0azUkg==",
       "dev": true
     },
     "util-deprecate": {
@@ -1278,12 +1414,6 @@
         "spdx-expression-parse": "^3.0.0"
       }
     },
-    "weak-map": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/weak-map/-/weak-map-1.0.0.tgz",
-      "integrity": "sha1-tm5Wqd8L0lp2u/G1FNsSkIBhSjc=",
-      "dev": true
-    },
     "wordwrap": {
       "version": "0.0.3",
       "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
@@ -1293,13 +1423,7 @@
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       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-      "dev": true
-    },
-    "wrench": {
-      "version": "1.5.8",
-      "resolved": "https://registry.npmjs.org/wrench/-/wrench-1.5.8.tgz",
-      "integrity": "sha1-ejHJf3hpJG12xc8vXJd6HEyOWrU=",
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==",
       "dev": true
     },
     "xtend": {
diff --git a/package.json b/package.json
index 34feeec..5532b14 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
   },
   "devDependencies": {
     "conventional-changelog": "^0.5.3",
-    "gh-pages": "^0.8.0",
+    "gh-pages": "^4.0.0",
     "json": "^9.0.3"
   },
   "scripts": {