diff --git a/readme.txt b/readme.txt
index 20534de1..106a4894 100644
--- a/readme.txt
+++ b/readme.txt
@@ -3,7 +3,7 @@ Adminer Editor - Data manipulation for end-users
 
 https://www.adminer.org/
 Supports: MySQL, MariaDB, PostgreSQL, SQLite, MS SQL, Oracle, MongoDB, Elasticsearch (plugin), SimpleDB (plugin), Firebird (plugin), ClickHouse (plugin)
-Requirements: PHP 5+
+Requirements: PHP 5.3+
 
 adminer/index.php - Run development version of Adminer
 editor/index.php - Run development version of Adminer Editor