diff --git a/.github/stale.yml b/.github/stale.yml
new file mode 100644
index 00000000..0d0b1c99
--- /dev/null
+++ b/.github/stale.yml
@@ -0,0 +1 @@
+_extends: .github
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 910c8cfd..822d21cc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v2
         with:
-          node-version: ${{ runner.node }}
+          node-version: ${{ matrix.node }}
       - run: npm install
       - run: npm run build --if-present
       - run: npm test
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 00000000..6098b8e6
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,36 @@
+name: Release
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          persist-credentials: false
+      - name: Setup Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: 14
+      - name: Cache
+        uses: actions/cache@v2
+        with:
+          path: ~/.npm
+          key: ${{ runner.os }}-npm-${{ hashFiles('**/package.json') }}
+          restore-keys: |
+            ${{ runner.os }}-npm-
+      - name: Install dependencies
+        run: npm i
+        env:
+          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
+      - name: Release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
+          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
+        run: npx semantic-release
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 00000000..504afef8
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+node_modules/
+package-lock.json
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 00000000..ec458177
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,14 @@
+## [9.17.1](https://github.com/webtorrent/bittorrent-tracker/compare/v9.17.0...v9.17.1) (2021-06-15)
+
+
+### Bug Fixes
+
+* add package-lock ([0e486b0](https://github.com/webtorrent/bittorrent-tracker/commit/0e486b09d80d30e1c13d4624e29c4251000d4092))
+* **deps:** update dependency bn.js to ^5.2.0 ([2d36e4a](https://github.com/webtorrent/bittorrent-tracker/commit/2d36e4ae60b1bac51773f2dca81c1a158b51cb28))
+* **deps:** update dependency chrome-dgram to ^3.0.6 ([a82aaaa](https://github.com/webtorrent/bittorrent-tracker/commit/a82aaaa31963a0d9adb640166f417142c5d7b970))
+* **deps:** update dependency run-parallel to ^1.2.0 ([fcf25ed](https://github.com/webtorrent/bittorrent-tracker/commit/fcf25ed40e1fd64e630b10a0281bc09604b901d3))
+* **deps:** update dependency run-series to ^1.1.9 ([fa2c33f](https://github.com/webtorrent/bittorrent-tracker/commit/fa2c33fc91f8ef0a47d0f40b7a046ae179ee328a))
+* **deps:** update dependency simple-websocket to ^9.1.0 ([96fedbd](https://github.com/webtorrent/bittorrent-tracker/commit/96fedbdf56ddcf6627eb373a33589db885cb4fb7))
+* **deps:** update dependency ws to ^7.4.5 ([6ad7ead](https://github.com/webtorrent/bittorrent-tracker/commit/6ad7ead994e5cb99980a406aea908e4b9ff6151c))
+* **deps:** update webtorrent ([1e8d47d](https://github.com/webtorrent/bittorrent-tracker/commit/1e8d47dcd8f5f53b42aa75265a129f950d16feef))
+* UDP url parsing ([8e24a8c](https://github.com/webtorrent/bittorrent-tracker/commit/8e24a8c97b55bbaaf2c92a496d1cd30b0c008934))
diff --git a/client.js b/client.js
index fabbf63f..75bdf26d 100644
--- a/client.js
+++ b/client.js
@@ -86,7 +86,7 @@ class Client extends EventEmitter {
       .map(announceUrl => {
         let parsedUrl
         try {
-          parsedUrl = new URL(announceUrl)
+          parsedUrl = common.parseUrl(announceUrl)
         } catch (err) {
           nextTickWarn(new Error(`Invalid tracker URL: ${announceUrl}`))
           return null
diff --git a/lib/client/udp-tracker.js b/lib/client/udp-tracker.js
index 0f4c0e4f..093ed4c8 100644
--- a/lib/client/udp-tracker.js
+++ b/lib/client/udp-tracker.js
@@ -74,20 +74,7 @@ class UDPTracker extends Tracker {
     const self = this
     if (!opts) opts = {}
 
-    // HACK: Fix for WHATWG URL object not parsing non-standard URL schemes like
-    // 'udp:'. Just replace it with 'http:' since we only need the `hostname`
-    // and `port` properties.
-    //
-    // Note: Only affects Chrome and Firefox. Works fine in Node.js, Safari, and
-    // Edge.
-    //
-    // Note: UDP trackers aren't used in the normal browser build, but they are
-    // used in a Chrome App build (i.e. by Brave Browser).
-    //
-    // Bug reports:
-    // - Chrome: https://bugs.chromium.org/p/chromium/issues/detail?id=734880
-    // - Firefox: https://bugzilla.mozilla.org/show_bug.cgi?id=1374505
-    let { hostname, port } = new URL(this.announceUrl.replace(/^udp:/, 'http:'))
+    let { hostname, port } = common.parseUrl(this.announceUrl)
     if (port === '') port = 80
 
     let transactionId = genTransactionId()
diff --git a/lib/common.js b/lib/common.js
index 4e0e039f..105f43ad 100644
--- a/lib/common.js
+++ b/lib/common.js
@@ -19,5 +19,31 @@ exports.hexToBinary = function (str) {
   return Buffer.from(str, 'hex').toString('binary')
 }
 
+// HACK: Fix for WHATWG URL object not parsing non-standard URL schemes like
+// 'udp:'. Just replace it with 'http:' since we only need a few properties.
+//
+// Note: Only affects Chrome and Firefox. Works fine in Node.js, Safari, and
+// Edge.
+//
+// Note: UDP trackers aren't used in the normal browser build, but they are
+// used in a Chrome App build (i.e. by Brave Browser).
+//
+// Bug reports:
+// - Chrome: https://bugs.chromium.org/p/chromium/issues/detail?id=734880
+// - Firefox: https://bugzilla.mozilla.org/show_bug.cgi?id=1374505
+exports.parseUrl = function (str) {
+  const url = new URL(str.replace(/^udp:/, 'http:'))
+
+  if (str.match(/^udp:/)) {
+    Object.defineProperties(url, {
+      href: { value: url.href.replace(/^http/, 'udp') },
+      protocol: { value: url.protocol.replace(/^http/, 'udp') },
+      origin: { value: url.origin.replace(/^http/, 'udp') }
+    })
+  }
+
+  return url
+}
+
 const config = require('./common-node')
 Object.assign(exports, config)
diff --git a/package.json b/package.json
index 30507662..5d62545b 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "bittorrent-tracker",
   "description": "Simple, robust, BitTorrent tracker (client & server) implementation",
-  "version": "9.17.0",
+  "version": "9.17.1",
   "author": {
     "name": "WebTorrent LLC",
     "email": "feross@webtorrent.io",
@@ -25,33 +25,35 @@
   },
   "dependencies": {
     "bencode": "^2.0.1",
-    "bittorrent-peerid": "^1.3.2",
-    "bn.js": "^5.1.1",
-    "chrome-dgram": "^3.0.4",
+    "bittorrent-peerid": "^1.3.3",
+    "bn.js": "^5.2.0",
+    "chrome-dgram": "^3.0.6",
     "compact2string": "^1.4.1",
     "debug": "^4.1.1",
     "ip": "^1.1.5",
     "lru": "^3.1.0",
     "minimist": "^1.2.5",
     "once": "^1.4.0",
-    "queue-microtask": "^1.2.2",
+    "queue-microtask": "^1.2.3",
     "random-iterate": "^1.0.1",
     "randombytes": "^2.1.0",
-    "run-parallel": "^1.1.9",
-    "run-series": "^1.1.8",
+    "run-parallel": "^1.2.0",
+    "run-series": "^1.1.9",
     "simple-get": "^4.0.0",
-    "simple-peer": "^9.7.1",
-    "simple-websocket": "^9.0.0",
+    "simple-peer": "^9.11.0",
+    "simple-websocket": "^9.1.0",
     "string2compact": "^1.3.0",
     "unordered-array-remove": "^1.0.2",
-    "ws": "^7.3.0"
+    "ws": "^7.4.5"
   },
   "devDependencies": {
-    "magnet-uri": "^5.2.4",
+    "@webtorrent/semantic-release-config": "^1.0.5",
+    "magnet-uri": "6.2.0",
+    "semantic-release": "^17.4.3",
     "standard": "*",
-    "tape": "^5.0.0",
-    "webtorrent-fixtures": "^1.7.3",
-    "wrtc": "^0.4.4"
+    "tape": "5.2.2",
+    "webtorrent-fixtures": "1.7.3",
+    "wrtc": "0.4.7"
   },
   "engines": {
     "node": ">=10"
@@ -69,8 +71,8 @@
   "license": "MIT",
   "main": "index.js",
   "optionalDependencies": {
-    "bufferutil": "^4.0.1",
-    "utf-8-validate": "^5.0.2"
+    "bufferutil": "^4.0.3",
+    "utf-8-validate": "^5.0.5"
   },
   "repository": {
     "type": "git",
@@ -93,5 +95,13 @@
       "type": "consulting",
       "url": "https://feross.org/support"
     }
-  ]
+  ],
+  "renovate": {
+    "extends": [
+      "github>webtorrent/renovate-config"
+    ]
+  },
+  "release": {
+    "extends": "@webtorrent/semantic-release-config"
+  }
 }
diff --git a/test/client.js b/test/client.js
index 829574d4..c34a27b6 100644
--- a/test/client.js
+++ b/test/client.js
@@ -534,10 +534,34 @@ test('http: invalid tracker port', function (t) {
   testUnsupportedTracker(t, 'http://127.0.0.1:69691337/announce')
 })
 
+test('http: invalid tracker url', function (t) {
+  testUnsupportedTracker(t, 'http:')
+})
+
+test('http: invalid tracker url with slash', function (t) {
+  testUnsupportedTracker(t, 'http://')
+})
+
 test('udp: invalid tracker port', function (t) {
   testUnsupportedTracker(t, 'udp://127.0.0.1:69691337')
 })
 
+test('udp: invalid tracker url', function (t) {
+  testUnsupportedTracker(t, 'udp:')
+})
+
+test('udp: invalid tracker url with slash', function (t) {
+  testUnsupportedTracker(t, 'udp://')
+})
+
 test('ws: invalid tracker port', function (t) {
   testUnsupportedTracker(t, 'ws://127.0.0.1:69691337')
 })
+
+test('ws: invalid tracker url', function (t) {
+  testUnsupportedTracker(t, 'ws:')
+})
+
+test('ws: invalid tracker url with slash', function (t) {
+  testUnsupportedTracker(t, 'ws://')
+})