diff --git a/.github/workflows/rebase.yml b/.github/workflows/rebase.yml
new file mode 100644
index 00000000..436cb79d
--- /dev/null
+++ b/.github/workflows/rebase.yml
@@ -0,0 +1,15 @@
+name: Automatic Rebase
+
+on: [pull_request]
+
+jobs:
+  _:
+    name: "Automatic Rebase"
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - uses: ljharb/rebase@master
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.npmrc b/.npmrc
index 43c97e71..fc227f38 100644
--- a/.npmrc
+++ b/.npmrc
@@ -1 +1,2 @@
 package-lock=false
+audit-level=moderate
diff --git a/lib/parse.js b/lib/parse.js
index 7cca8842..8db3a5f8 100644
--- a/lib/parse.js
+++ b/lib/parse.js
@@ -201,7 +201,7 @@ var normalizeParseOptions = function normalizeParseOptions(opts) {
     }
 
     if (typeof opts.charset !== 'undefined' && opts.charset !== 'utf-8' && opts.charset !== 'iso-8859-1') {
-        throw new Error('The charset option must be either utf-8, iso-8859-1, or undefined');
+        throw new TypeError('The charset option must be either utf-8, iso-8859-1, or undefined');
     }
     var charset = typeof opts.charset === 'undefined' ? defaults.charset : opts.charset;
 
diff --git a/package.json b/package.json
index 682462b9..81c989c4 100644
--- a/package.json
+++ b/package.json
@@ -7,9 +7,9 @@
         "type": "git",
         "url": "https://github.com/ljharb/qs.git"
     },
-	"funding": {
-		"url": "https://github.com/sponsors/ljharb"
-	},
+    "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+    },
     "main": "lib/index.js",
     "contributors": [
         {
@@ -31,21 +31,21 @@
     },
     "dependencies": {},
     "devDependencies": {
-        "@ljharb/eslint-config": "^15.0.0",
+        "@ljharb/eslint-config": "^15.1.0",
         "browserify": "^16.5.0",
         "covert": "^1.1.1",
         "eclint": "^2.8.1",
-        "eslint": "^6.6.0",
+        "eslint": "^6.8.0",
         "evalmd": "^0.0.19",
         "for-each": "^0.3.3",
-        "has-symbols": "^1.0.0",
+        "has-symbols": "^1.0.1",
         "iconv-lite": "^0.4.24",
         "mkdirp": "^0.5.1",
-        "object-inspect": "^1.6.0",
+        "object-inspect": "^1.7.0",
         "qs-iconv": "^1.0.4",
-        "safe-publish-latest": "^1.1.3",
+        "safe-publish-latest": "^1.1.4",
         "safer-buffer": "^2.1.2",
-        "tape": "^4.11.0"
+        "tape": "^5.0.0-next.3"
     },
     "scripts": {
         "prepublish": "safe-publish-latest && npm run dist",
diff --git a/test/parse.js b/test/parse.js
index be10400b..fcfd86ac 100644
--- a/test/parse.js
+++ b/test/parse.js
@@ -599,7 +599,7 @@ test('parse()', function (t) {
 
         st.deepEqual(
             qs.parse('a[b]=c&a=toString', { plainObjects: true }),
-            { a: { b: 'c', toString: true } },
+            { __proto__: null, a: { __proto__: null, b: 'c', toString: true } },
             'can overwrite prototype with plainObjects true'
         );