diff --git a/node_modules/browserstack-runner/lib/local.js b/node_modules/browserstack-runner/lib/local.js
index 15b147c..4f15a49 100644
--- a/node_modules/browserstack-runner/lib/local.js
+++ b/node_modules/browserstack-runner/lib/local.js
@@ -180,16 +180,16 @@ var Tunnel = function Tunnel(key, port, uniqueIdentifier, config, callback) {
     }
     logger.debug('Downloading BrowserStack Local to "%s"', localBinary);
 
-    var file = fs.createWriteStream(localBinary);
+    var file = fs.createWriteStream(localBinary, {emitClose: true});
     https.get('https://s3.amazonaws.com/browserStack/browserstack-local/BrowserStackLocal' + (windows ? '.exe' : '-' + process.platform + '-' + process.arch),
     function(response) {
       response.pipe(file);
 
       response.on('end', function() {
-        fs.chmodSync(localBinary, 0700);
-        setTimeout(function() {
+        file.on('close', function () {
+          fs.chmodSync(localBinary, 0700);
           tunnelLauncher();
-        }, 100);
+        })
       }).on('error', function(e) {
         logger.info('Got error while downloading binary: ' + e.message);
         throw new Error('Got error while downloading binary: ' + e.message);