diff --git a/php.md b/php.md
index 40335ba..cac5e2b 100644
--- a/php.md
+++ b/php.md
@@ -64,6 +64,7 @@ This list contains PHP libraries related to web scraping and data processing
   * [Urlify](https://github.com/jbroadway/urlify) - A PHP port of Django's URLify.js.
   * [Slugify](https://github.com/cocur/slugify) - A library to convert strings to slugs.
 * User-agent
+  * [CrawlerDetect](https://github.com/JayBizzle/Crawler-Detect) - CrawlerDetect is a PHP class for detecting bots/crawlers/spiders via the user agent and http_from header.
   * [PHPUserAgent](https://github.com/donatj/PhpUserAgent) - A simple, streamlined PHP user-agent parser!
   * [AgentZero](https://github.com/hexydec/agentzero) - A library for extracting information from User-Agent strings very fast.
   * [Device Detector](https://github.com/piwik/device-detector) - Another library for parsing user agent strings.