diff --git a/.travis.yml b/.travis.yml
index 5a4c9e02f..d1110b8b3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,8 @@ node_js:
   - "0.10"
   - "0.12"
   - "4"
-  - "node"
+  - "6"
+  - "7"
 git:
   depth: 1
 env:
diff --git a/test/common.js b/test/common.js
index 214b38993..1f7244445 100644
--- a/test/common.js
+++ b/test/common.js
@@ -15,7 +15,7 @@ exports.listen = function (opts, fn) {
     opts = {};
   }
 
-  var e = eio.listen(undefined, opts, function () {
+  var e = eio.listen(0, opts, function () {
     fn(e.httpServer.address().port);
   });