diff --git a/README.md b/README.md
index c65340f8b718..87f07b0a4aeb 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ You can now [join our Slack community!](http://cachethq-slack.herokuapp.com)
 
 ## Requirements
 
-- PHP 7.1 or later
+- PHP 7.1.3 - 7.3
 - HTTP server with PHP support (eg: Apache, Nginx, Caddy)
 - [Composer](https://getcomposer.org)
 - A supported database: MySQL, PostgreSQL or SQLite