diff --git a/test/pummel/test-http-many-keep-alive-connections.js b/test/pummel/test-http-many-keep-alive-connections.js
index 59eccc328d5f03..9a7083a8ae66cb 100644
--- a/test/pummel/test-http-many-keep-alive-connections.js
+++ b/test/pummel/test-http-many-keep-alive-connections.js
@@ -20,7 +20,7 @@
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 'use strict';
-const common = require('../common');
+require('../common');
 const assert = require('assert');
 const http = require('http');
 
@@ -40,9 +40,9 @@ server.once('connection', function(c) {
   connection = c;
 });
 
-server.listen(common.PORT, function connect() {
+server.listen(0, function connect() {
   const request = http.get({
-    port: common.PORT,
+    port: server.address().port,
     path: '/',
     headers: {
       'Connection': 'Keep-alive'
diff --git a/test/pummel/test-http-upload-timeout.js b/test/pummel/test-http-upload-timeout.js
index 2c1cbf61988ec6..c3ec3ad19d5d37 100644
--- a/test/pummel/test-http-upload-timeout.js
+++ b/test/pummel/test-http-upload-timeout.js
@@ -23,7 +23,7 @@
 // This tests setTimeout() by having multiple clients connecting and sending
 // data in random intervals. Clients are also randomly disconnecting until there
 // are no more clients left. If no false timeout occurs, this test has passed.
-const common = require('../common');
+require('../common');
 const http = require('http');
 const server = http.createServer();
 let connections = 0;
@@ -44,13 +44,13 @@ server.on('request', function(req, res) {
   req.resume();
 });
 
-server.listen(common.PORT, '127.0.0.1', function() {
+server.listen(0, '127.0.0.1', function() {
   for (let i = 0; i < 10; i++) {
     connections++;
 
     setTimeout(function() {
       const request = http.request({
-        port: common.PORT,
+        port: server.address().port,
         method: 'POST',
         path: '/'
       });
diff --git a/test/pummel/test-https-large-response.js b/test/pummel/test-https-large-response.js
index d72fd2a65ba877..acf442d2541d1a 100644
--- a/test/pummel/test-https-large-response.js
+++ b/test/pummel/test-https-large-response.js
@@ -43,9 +43,9 @@ const server = https.createServer(options, common.mustCall(function(req, res) {
   res.end(body);
 }));
 
-server.listen(common.PORT, common.mustCall(function() {
+server.listen(0, common.mustCall(function() {
   https.get({
-    port: common.PORT,
+    port: server.address().port,
     rejectUnauthorized: false
   }, common.mustCall(function(res) {
     console.log('response!');
diff --git a/test/pummel/test-https-no-reader.js b/test/pummel/test-https-no-reader.js
index 31d2bfa2d3ca34..63db032d0b6144 100644
--- a/test/pummel/test-https-no-reader.js
+++ b/test/pummel/test-https-no-reader.js
@@ -43,10 +43,10 @@ const server = https.createServer(options, function(req, res) {
   res.end();
 });
 
-server.listen(common.PORT, function() {
+server.listen(0, function() {
   const req = https.request({
     method: 'POST',
-    port: common.PORT,
+    port: server.address().port,
     rejectUnauthorized: false
   }, function(res) {
     res.read(0);
diff --git a/test/pummel/test-net-pingpong-delay.js b/test/pummel/test-net-pingpong-delay.js
index 392a6e0fed751e..bddcd4de72d664 100644
--- a/test/pummel/test-net-pingpong-delay.js
+++ b/test/pummel/test-net-pingpong-delay.js
@@ -24,7 +24,7 @@ const common = require('../common');
 const assert = require('assert');
 const net = require('net');
 
-function pingPongTest(port, host, on_complete) {
+function pingPongTest(host, on_complete) {
   const N = 100;
   const DELAY = 1;
   let count = 0;
@@ -63,8 +63,8 @@ function pingPongTest(port, host, on_complete) {
     });
   });
 
-  server.listen(port, host, common.mustCall(function() {
-    const client = net.createConnection(port, host);
+  server.listen(0, host, common.mustCall(function() {
+    const client = net.createConnection(server.address().port, host);
 
     client.setEncoding('utf8');
 
@@ -104,4 +104,4 @@ function pingPongTest(port, host, on_complete) {
   }));
 }
 
-pingPongTest(common.PORT);
+pingPongTest();
diff --git a/test/pummel/test-net-timeout2.js b/test/pummel/test-net-timeout2.js
index 93fbe7bfab36cb..4220ef77ca6704 100644
--- a/test/pummel/test-net-timeout2.js
+++ b/test/pummel/test-net-timeout2.js
@@ -48,7 +48,7 @@ const server = net.createServer(function(socket) {
 });
 
 
-server.listen(common.PORT, function() {
-  const s = net.connect(common.PORT);
+server.listen(0, function() {
+  const s = net.connect(server.address().port);
   s.pipe(process.stdout);
 });
diff --git a/test/pummel/test-regress-GH-892.js b/test/pummel/test-regress-GH-892.js
index 48201807e39e56..d5e8cc0215635c 100644
--- a/test/pummel/test-regress-GH-892.js
+++ b/test/pummel/test-regress-GH-892.js
@@ -52,7 +52,7 @@ function makeRequest() {
   // more easily.  Also, this is handy when using this test to
   // view V8 opt/deopt behavior.
   const args = process.execArgv.concat([ childScript,
-                                         common.PORT,
+                                         server.address().port,
                                          bytesExpected ]);
 
   const child = spawn(process.execPath, args);
@@ -101,7 +101,7 @@ const server = https.Server(serverOptions, function(req, res) {
   });
 });
 
-server.listen(common.PORT, function() {
+server.listen(0, function() {
   console.log(`expecting ${bytesExpected} bytes`);
   makeRequest();
 });
diff --git a/test/pummel/test-tls-throttle.js b/test/pummel/test-tls-throttle.js
index af588dfa91fb94..da675204a1ec5c 100644
--- a/test/pummel/test-tls-throttle.js
+++ b/test/pummel/test-tls-throttle.js
@@ -46,9 +46,9 @@ const server = tls.Server(options, common.mustCall(function(socket) {
 
 let recvCount = 0;
 
-server.listen(common.PORT, function() {
+server.listen(0, function() {
   const client = tls.connect({
-    port: common.PORT,
+    port: server.address().port,
     rejectUnauthorized: false
   });