diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 580260c..79e0818 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -5,15 +5,20 @@ on:
     branches: [ '*', '!gh-pages' ]
   pull_request:
     branches: [ '*', '!gh-pages' ]
+  workflow_dispatch:
+    inputs:
+      via:
+          description: 'trigger origin'
+          required: true
 
 jobs:
   build:
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-
     strategy:
       matrix:
-        node-version: [14.x]
+        os: [ubuntu-latest, windows-latest]
+        node-version: [16.x]
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 10
     steps:
     - uses: actions/checkout@v2
     - name: Use Node.js ${{ matrix.node-version }}
diff --git a/test/internal.test.js b/test/internal.test.js
index d6c11d8..6e81c43 100644
--- a/test/internal.test.js
+++ b/test/internal.test.js
@@ -17,12 +17,17 @@ describe('internal client/server test', function () {
     })
   }
 
-  for (const version in Versions) {
-    it('proxies ' + version, async () => {
-      console.debug(version)
-      await proxyTest(version)
-      await sleep(5000)
-      console.debug('Done', version)
-    })
+  if (process.env.CI && process.platform === 'linux') {
+    // Don't run the test, see :
+    // https://github.com/PrismarineJS/bedrock-protocol/issues/124
+  } else {
+    for (const version in Versions) {
+      it('proxies ' + version, async () => {
+        console.debug(version)
+        await proxyTest(version)
+        await sleep(5000)
+        console.debug('Done', version)
+      })
+    }
   }
 })
diff --git a/test/proxy.js b/test/proxy.js
index 2ea17b9..2d94e05 100644
--- a/test/proxy.js
+++ b/test/proxy.js
@@ -3,9 +3,11 @@ const { sleep, waitFor } = require('../src/datatypes/util')
 
 function proxyTest (version, timeout = 1000 * 40) {
   return waitFor(res => {
+    const SERVER_PORT = 19000 + ((Math.random() * 100) | 0)
+    const CLIENT_PORT = 19000 + ((Math.random() * 100) | 0)
     const server = createServer({
       host: '0.0.0.0', // optional
-      port: 19131, // optional
+      port: SERVER_PORT, // optional
       offline: true,
       version // The server version
     })
@@ -27,11 +29,11 @@ function proxyTest (version, timeout = 1000 * 40) {
       offline: true,
       /* host and port for clients to listen to */
       host: '0.0.0.0',
-      port: 19132,
+      port: CLIENT_PORT,
       /* Where to send upstream packets to */
       destination: {
         host: '127.0.0.1',
-        port: 19131
+        port: SERVER_PORT
       }
     })
     relay.conLog = console.debug
@@ -39,7 +41,7 @@ function proxyTest (version, timeout = 1000 * 40) {
 
     console.debug('Proxy started', server.options.version)
 
-    const client = createClient({ host: '127.0.0.1', version, username: 'Boat', offline: true })
+    const client = createClient({ host: '127.0.0.1', port: CLIENT_PORT, version, username: 'Boat', offline: true })
 
     console.debug('Client started')