diff --git a/lib/WebDriver/Extension/ChromeDevTools.php b/lib/WebDriver/Extension/ChromeDevTools.php
index 9d8b523..e76e211 100644
--- a/lib/WebDriver/Extension/ChromeDevTools.php
+++ b/lib/WebDriver/Extension/ChromeDevTools.php
@@ -16,6 +16,8 @@
 /**
  * Chrome Dev Tools extension
  *
+ * @see https://chromedevtools.github.io/devtools-protocol/
+ *
  * @package WebDriver
  */
 class ChromeDevTools extends AbstractWebDriver