diff --git a/test/helpers/download-test-browsers.js b/test/helpers/download-test-browsers.js
index 5772e7d2..b27f4a9e 100644
--- a/test/helpers/download-test-browsers.js
+++ b/test/helpers/download-test-browsers.js
@@ -1,5 +1,11 @@
 'use strict';
 
+// The latest version of Selenium doesn't support Node 4.
+const semver = require('semver');
+if (!semver.satisfies(process.version, '5')) {
+  return;
+}
+
 const seleniumAssistant = require('selenium-assistant');
 
 const MAX_RETRIES = 3;
diff --git a/test/testSelenium.js b/test/testSelenium.js
index 34fe0a42..e8cf4309 100644
--- a/test/testSelenium.js
+++ b/test/testSelenium.js
@@ -1,5 +1,11 @@
 'use strict';
 
+// The latest version of Selenium doesn't support Node 4.
+const semver = require('semver');
+if (!semver.satisfies(process.version, '5')) {
+  return;
+}
+
 const seleniumAssistant = require('selenium-assistant');
 const webdriver = require('selenium-webdriver');
 const seleniumFirefox = require('selenium-webdriver/firefox');