diff --git a/README.md b/README.md
index 57fbf0f4..7f5da3ae 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ Requirements
 
 - [Sign up](https://www.messagebird.com/en/signup) for a free MessageBird account
 - Create a new access_key in the developers sections
-- MessageBird API client for PHP requires PHP >= 5.4.
+- MessageBird API client for PHP requires PHP >= 7.2.
 
 Installation
 -----