diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 7eef01b9..2af82353 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -18,7 +18,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 16
+          node-version: 20
 
       - name: Install dependencies
         run: npm install
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0891e2a8..fa652b00 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macOS-latest] #, windows-latest]
-        node-version: [16]
+        node-version: [20]
 
     runs-on: ${{ matrix.os }}
 
diff --git a/.nvmrc b/.nvmrc
index 19c7bdba..2edeafb0 100644
--- a/.nvmrc
+++ b/.nvmrc
@@ -1 +1 @@
-16
\ No newline at end of file
+20
\ No newline at end of file
diff --git a/test/alias.test.js b/test/alias.test.js
index 76393bed..195371de 100644
--- a/test/alias.test.js
+++ b/test/alias.test.js
@@ -17,7 +17,10 @@ beforeEach(async (t) => {
     const memSink = new sink.MEM();
     const service = new EikService({ customSink: memSink });
     server.register(service.api());
-    const address = await server.listen();
+    const address = await server.listen({
+        host: '127.0.0.1',
+        port: 0,
+    });
 
     const token = await cli.login({
         server: address,
diff --git a/test/integration/alias.test.js b/test/integration/alias.test.js
index 2b5de754..63750187 100644
--- a/test/integration/alias.test.js
+++ b/test/integration/alias.test.js
@@ -26,7 +26,10 @@ beforeEach(async (t) => {
     const memSink = new sink.MEM();
     const service = new EikService({ customSink: memSink });
     server.register(service.api());
-    const address = await server.listen();
+    const address = await server.listen({
+        host: '127.0.0.1',
+        port: 0,
+    });
     const folder = await fs.mkdtemp(join(os.tmpdir(), basename(__filename)));
     const eik = join(__dirname, '../../index.js');
 
diff --git a/test/integration/integrity.test.js b/test/integration/integrity.test.js
index 25ae60bc..90b8f09c 100644
--- a/test/integration/integrity.test.js
+++ b/test/integration/integrity.test.js
@@ -24,7 +24,10 @@ beforeEach(async (t) => {
     const server = fastify({ logger: false });
     const service = new EikService({ customSink: memSink });
     server.register(service.api());
-    const address = await server.listen();
+    const address = await server.listen({
+        host: '127.0.0.1',
+        port: 0,
+    });
     const folder = await fs.mkdtemp(join(os.tmpdir(), basename(__filename)));
 
     const token = await cli.login({
diff --git a/test/integration/login.test.js b/test/integration/login.test.js
index 9abef613..f4d4cde4 100644
--- a/test/integration/login.test.js
+++ b/test/integration/login.test.js
@@ -25,7 +25,10 @@ beforeEach(async (t) => {
     const server = fastify({ logger: false });
     const service = new EikService({ customSink: memSink });
     server.register(service.api());
-    const address = await server.listen();
+    const address = await server.listen({
+        host: '127.0.0.1',
+        port: 0,
+    });
 
     const folder = await fs.mkdtemp(join(os.tmpdir(), basename(__filename)));
 
diff --git a/test/integration/map.test.js b/test/integration/map.test.js
index b85f2643..a27eafcb 100644
--- a/test/integration/map.test.js
+++ b/test/integration/map.test.js
@@ -25,7 +25,10 @@ beforeEach(async (t) => {
     const server = fastify({ logger: false });
     const service = new EikService({ customSink: memSink });
     server.register(service.api());
-    const address = await server.listen();
+    const address = await server.listen({
+        host: '127.0.0.1',
+        port: 0,
+    });
     const folder = await fs.mkdtemp(join(os.tmpdir(), basename(__filename)));
 
     const token = await cli.login({
diff --git a/test/integration/meta.test.js b/test/integration/meta.test.js
index 7788daa8..83899c95 100644
--- a/test/integration/meta.test.js
+++ b/test/integration/meta.test.js
@@ -24,7 +24,10 @@ beforeEach(async (t) => {
     const server = fastify({ logger: false });
     const service = new EikService({ customSink: memSink });
     server.register(service.api());
-    const address = await server.listen();
+    const address = await server.listen({
+        host: '127.0.0.1',
+        port: 0,
+    });
     const folder = await fs.mkdtemp(join(os.tmpdir(), basename(__filename)));
     const eik = join(__dirname, '../../index.js');
 
diff --git a/test/integration/package.test.js b/test/integration/package.test.js
index fd565ac2..ec48cd90 100644
--- a/test/integration/package.test.js
+++ b/test/integration/package.test.js
@@ -25,7 +25,10 @@ beforeEach(async (t) => {
     const server = fastify({ logger: false });
     const service = new EikService({ customSink: memSink });
     server.register(service.api());
-    const address = await server.listen();
+    const address = await server.listen({
+        host: '127.0.0.1',
+        port: 0,
+    });
     const folder = await fs.mkdtemp(join(os.tmpdir(), basename(__filename)));
 
     const token = await cli.login({
diff --git a/test/integrity.test.js b/test/integrity.test.js
index de1ef022..55ce4c0b 100644
--- a/test/integrity.test.js
+++ b/test/integrity.test.js
@@ -14,7 +14,10 @@ beforeEach(async (t) => {
     const memSink = new sink.MEM();
     const service = new EikService({ customSink: memSink });
     server.register(service.api());
-    const address = await server.listen();
+    const address = await server.listen({
+        host: '127.0.0.1',
+        port: 0,
+    });
 
     const token = await cli.login({
         server: address,
diff --git a/test/login.test.js b/test/login.test.js
index 1f863c58..e62e958d 100644
--- a/test/login.test.js
+++ b/test/login.test.js
@@ -14,7 +14,10 @@ beforeEach(async (t) => {
     const server = fastify({ logger: false });
     const service = new EikService({ customSink: memSink });
     server.register(service.api());
-    const address = await server.listen();
+    const address = await server.listen({
+        host: '127.0.0.1',
+        port: 0,
+    });
     t.context.server = server;
     t.context.address = address;
 });
diff --git a/test/meta.test.js b/test/meta.test.js
index 2d8353ab..0d4a2c01 100644
--- a/test/meta.test.js
+++ b/test/meta.test.js
@@ -17,7 +17,10 @@ beforeEach(async (t) => {
     const memSink = new sink.MEM();
     const service = new EikService({ customSink: memSink });
     server.register(service.api());
-    const address = await server.listen();
+    const address = await server.listen({
+        host: '127.0.0.1',
+        port: 0,
+    });
 
     const token = await cli.login({
         server: address,
diff --git a/test/publish-files-definitions.test.js b/test/publish-files-definitions.test.js
index 9b142422..877e3dda 100644
--- a/test/publish-files-definitions.test.js
+++ b/test/publish-files-definitions.test.js
@@ -26,7 +26,10 @@ beforeEach(async (t) => {
     const server = fastify({ logger: false });
     const service = new EikService({ customSink: memSink });
     server.register(service.api());
-    const address = await server.listen();
+    const address = await server.listen({
+        host: '127.0.0.1',
+        port: 0,
+    });
 
     const token = await cli.login({
         server: address,
diff --git a/test/publish.map.test.js b/test/publish.map.test.js
index 250dc2c6..4e515cf2 100644
--- a/test/publish.map.test.js
+++ b/test/publish.map.test.js
@@ -17,7 +17,10 @@ beforeEach(async (t) => {
     const server = fastify({ logger: false });
     const service = new EikService({ customSink: memSink });
     server.register(service.api());
-    const address = await server.listen();
+    const address = await server.listen({
+        host: '127.0.0.1',
+        port: 0,
+    });
 
     const token = await cli.login({
         server: address,
diff --git a/test/publish.package.test.js b/test/publish.package.test.js
index 679d530a..1f9cb35e 100644
--- a/test/publish.package.test.js
+++ b/test/publish.package.test.js
@@ -17,7 +17,10 @@ beforeEach(async (t) => {
     const server = fastify({ logger: false });
     const service = new EikService({ customSink: memSink });
     server.register(service.api());
-    const address = await server.listen();
+    const address = await server.listen({
+        host: '127.0.0.1',
+        port: 0,
+    });
 
     const token = await cli.login({
         server: address,
diff --git a/test/utils.test.js b/test/utils.test.js
index c398ade3..4a147fe1 100644
--- a/test/utils.test.js
+++ b/test/utils.test.js
@@ -76,7 +76,10 @@ test('fetch latest version for a given published bundle', async (t) => {
             [2, { version: '2.1.8' }],
         ],
     }));
-    const address = await server.listen();
+    const address = await server.listen({
+        host: '127.0.0.1',
+        port: 0,
+    });
 
     const version = await f.latestVersion(address, 'pkg', 'foo');
 
@@ -93,7 +96,10 @@ test('fetch latest version, filtered by major, for a given published bundle', as
             [2, { version: '2.1.8' }],
         ],
     }));
-    const address = await server.listen();
+    const address = await server.listen({
+        host: '127.0.0.1',
+        port: 0,
+    });
 
     const version = await f.latestVersion(address, 'pkg', 'foo', 1);
 
@@ -104,7 +110,10 @@ test('fetch latest version, filtered by major, for a given published bundle', as
 
 test('fetch latest version for a given published bundle, non existant bundle on server', async (t) => {
     const server = fastify();
-    const address = await server.listen();
+    const address = await server.listen({
+        host: '127.0.0.1',
+        port: 0,
+    });
 
     try {
         await f.latestVersion(address, 'pkg', 'foo');
@@ -122,7 +131,10 @@ test('fetch latest version for a given published bundle, non existant bundle on
 test('fetch latest version, filtered by major, for a given published bundle', async (t) => {
     const server = fastify();
     server.get('/pkg/foo', async () => '');
-    const address = await server.listen();
+    const address = await server.listen({
+        host: '127.0.0.1',
+        port: 0,
+    });
 
     try {
         await f.latestVersion(address, 'pkg', 'foo');
@@ -140,7 +152,10 @@ test('fetch latest version, filtered by major, for a given published bundle', as
 test('fetch latest version, invalid versions returned by server', async (t) => {
     const server = fastify();
     server.get('/pkg/foo', async () => ({ versions: 1 }));
-    const address = await server.listen();
+    const address = await server.listen({
+        host: '127.0.0.1',
+        port: 0,
+    });
 
     t.rejects(
         f.latestVersion(address, 'pkg', 'foo'),
@@ -158,7 +173,10 @@ test('fetch latest version, invalid versions keys returned by server', async (t)
             ['also not a number', 2],
         ],
     }));
-    const address = await server.listen();
+    const address = await server.listen({
+        host: '127.0.0.1',
+        port: 0,
+    });
 
     t.rejects(
         f.latestVersion(address, 'pkg', 'foo'),
@@ -174,7 +192,10 @@ test('fetch latest version, no bundles yet published', async (t) => {
         latest: {},
         versions: [],
     }));
-    const address = await server.listen();
+    const address = await server.listen({
+        host: '127.0.0.1',
+        port: 0,
+    });
 
     const version = await f.latestVersion(address, 'pkg', 'foo');
 
@@ -199,7 +220,10 @@ test('fetch remote hash for a given version', async (t) => {
             },
         ],
     }));
-    const address = await server.listen();
+    const address = await server.listen({
+        host: '127.0.0.1',
+        port: 0,
+    });
     const result = await f.integrity(address, 'pkg', 'foo', '1.0.0');
 
     t.equal(
diff --git a/test/version.test.js b/test/version.test.js
index 9f0a9fcc..370258fb 100644
--- a/test/version.test.js
+++ b/test/version.test.js
@@ -16,7 +16,10 @@ beforeEach(async (t) => {
     const server = fastify({ logger: false });
     const service = new EikService({ customSink: memSink });
     server.register(service.api());
-    const address = await server.listen();
+    const address = await server.listen({
+        host: '127.0.0.1',
+        port: 0,
+    });
 
     const token = await cli.login({
         server: address,