diff --git a/package-lock.json b/package-lock.json
index 94585a0..48d3e92 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6567,9 +6567,9 @@
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+      "resolved": "https://registry.npmjs.org/email-addresses/-/email-addresses-5.0.0.tgz",
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     },
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@@ -7878,35 +7878,6 @@
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       }
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-      "resolved": "https://registry.npmjs.org/filenamify-url/-/filenamify-url-1.0.0.tgz",
-      "integrity": "sha1-syvYExnvWGO3MHi+1Q9GpPeXX1A=",
-      "dev": true,
-      "requires": {
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-        "humanize-url": "^1.0.0"
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-          "resolved": "https://registry.npmjs.org/filename-reserved-regex/-/filename-reserved-regex-1.0.0.tgz",
-          "integrity": "sha1-5hz4BfDeHJhFZ9A4bcXfUO5a9+Q=",
-          "dev": true
-        },
-        "filenamify": {
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-          "resolved": "https://registry.npmjs.org/filenamify/-/filenamify-1.2.1.tgz",
-          "integrity": "sha1-qfL/0RxQO+0wABUCknI3jx8TZaU=",
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-            "trim-repeated": "^1.0.0"
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@@ -9736,24 +9707,41 @@
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-      "resolved": "https://registry.npmjs.org/gh-pages/-/gh-pages-3.1.0.tgz",
-      "integrity": "sha512-3b1rly9kuf3/dXsT8+ZxP0UhNLOo1CItj+3e31yUVcaph/yDsJ9RzD7JOw5o5zpBTJVQLlJAASNkUfepi9fe2w==",
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/gh-pages/-/gh-pages-5.0.0.tgz",
+      "integrity": "sha512-Nqp1SjkPIB94Xw/3yYNTUL+G2dxlhjvv1zeN/4kMC1jfViTEqhtVz/Ba1zSXHuvXCN9ADNS1dN4r5/J/nZWEQQ==",
       "dev": true,
       "requires": {
-        "async": "^2.6.1",
+        "async": "^3.2.4",
         "commander": "^2.18.0",
-        "email-addresses": "^3.0.1",
-        "filenamify-url": "^1.0.0",
+        "email-addresses": "^5.0.0",
+        "filenamify": "^4.3.0",
         "find-cache-dir": "^3.3.1",
         "fs-extra": "^8.1.0",
         "globby": "^6.1.0"
       },
       "dependencies": {
+        "async": {
+          "version": "3.2.5",
+          "resolved": "https://registry.npmjs.org/async/-/async-3.2.5.tgz",
+          "integrity": "sha512-baNZyqaaLhyLVKm/DlvdW051MSgO6b8eVfIezl9E5PqWxFgzLm/wQntEW4zOytVburDEr0JlALEpdOFwvErLsg==",
+          "dev": true
+        },
+        "filenamify": {
+          "version": "4.3.0",
+          "resolved": "https://registry.npmjs.org/filenamify/-/filenamify-4.3.0.tgz",
+          "integrity": "sha512-hcFKyUG57yWGAzu1CMt/dPzYZuv+jAJUT85bL8mrXvNe6hWj6yEHEc4EdcgiA6Z3oi1/9wXJdZPXF2dZNgwgOg==",
+          "dev": true,
+          "requires": {
+            "filename-reserved-regex": "^2.0.0",
+            "strip-outer": "^1.0.1",
+            "trim-repeated": "^1.0.0"
+          }
+        },
         "globby": {
           "version": "6.1.0",
           "resolved": "https://registry.npmjs.org/globby/-/globby-6.1.0.tgz",
-          "integrity": "sha1-9abXDoOV4hyFj7BInWTfAkJNUGw=",
+          "integrity": "sha512-KVbFv2TQtbzCoxAnfD6JcHZTYCzyliEaaeM/gH8qQdkKr5s0OP9scEgvdcngyk7AVdY6YVW/TJHd+lQ/Df3Daw==",
           "dev": true,
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             "array-union": "^1.0.1",
@@ -9766,7 +9754,7 @@
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           "version": "2.3.0",
           "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
-          "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
+          "integrity": "sha512-udgsAY+fTnvv7kI7aaxbqwWNb0AHiB0qBO89PZKPkoTmGOgdbrHDKD+0B2X4uTfJ/FT1R09r9gTsjUjNJotuog==",
           "dev": true
         }
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@@ -10564,61 +10552,6 @@
       "resolved": "https://registry.npmjs.org/human-signals/-/human-signals-1.1.1.tgz",
       "integrity": "sha512-SEQu7vl8KjNL2eoGBLF3+wAjpsNfA9XMlXAYj/3EdaNfAlxKthD1xjEQfGOUhllCGGJVNY34bRr6lPINhNjyZw=="
     },
-    "humanize-url": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/humanize-url/-/humanize-url-1.0.1.tgz",
-      "integrity": "sha1-9KuZ4NKIF0yk4eUEB8VfuuRk7/8=",
-      "dev": true,
-      "requires": {
-        "normalize-url": "^1.0.0",
-        "strip-url-auth": "^1.0.0"
-      },
-      "dependencies": {
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-          "version": "1.1.0",
-          "resolved": "https://registry.npmjs.org/is-plain-obj/-/is-plain-obj-1.1.0.tgz",
-          "integrity": "sha1-caUMhCnfync8kqOQpKA7OfzVHT4=",
-          "dev": true
-        },
-        "normalize-url": {
-          "version": "1.9.1",
-          "resolved": "https://registry.npmjs.org/normalize-url/-/normalize-url-1.9.1.tgz",
-          "integrity": "sha1-LMDWazHqIwNkWENuNiDYWVTGbDw=",
-          "dev": true,
-          "requires": {
-            "object-assign": "^4.0.1",
-            "prepend-http": "^1.0.0",
-            "query-string": "^4.1.0",
-            "sort-keys": "^1.0.0"
-          }
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-        "prepend-http": {
-          "version": "1.0.4",
-          "resolved": "https://registry.npmjs.org/prepend-http/-/prepend-http-1.0.4.tgz",
-          "integrity": "sha1-1PRWKwzjaW5BrFLQ4ALlemNdxtw=",
-          "dev": true
-        },
-        "query-string": {
-          "version": "4.3.4",
-          "resolved": "https://registry.npmjs.org/query-string/-/query-string-4.3.4.tgz",
-          "integrity": "sha1-u7aTucqRXCMlFbIosaArYJBD2+s=",
-          "dev": true,
-          "requires": {
-            "object-assign": "^4.1.0",
-            "strict-uri-encode": "^1.0.0"
-          }
-        },
-        "sort-keys": {
-          "version": "1.1.2",
-          "resolved": "https://registry.npmjs.org/sort-keys/-/sort-keys-1.1.2.tgz",
-          "integrity": "sha1-RBttTTRnmPG05J6JIK37oOVD+a0=",
-          "dev": true,
-          "requires": {
-            "is-plain-obj": "^1.0.0"
-          }
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-    },
     "iconv-lite": {
       "version": "0.6.2",
       "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.2.tgz",
@@ -18217,12 +18150,6 @@
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-    "strip-url-auth": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/strip-url-auth/-/strip-url-auth-1.0.1.tgz",
-      "integrity": "sha1-IrD6OkE4WzO+PzMVUbu4N/oM164=",
-      "dev": true
-    },
     "style-loader": {
       "version": "0.23.1",
       "resolved": "https://registry.npmjs.org/style-loader/-/style-loader-0.23.1.tgz",
diff --git a/package.json b/package.json
index 09dd687..a69b1f9 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "theme-ui": "^0.3.1"
   },
   "devDependencies": {
-    "gh-pages": "^3.1.0"
+    "gh-pages": "^5.0.0"
   },
   "keywords": [
     "gatsby",