diff --git a/system_requirements.rst b/system_requirements.rst
index 9950286f2..1d4be10f2 100644
--- a/system_requirements.rst
+++ b/system_requirements.rst
@@ -21,7 +21,7 @@ System Requirements
 * Database Management Systems
     * MySQL 5.1 and above
     * PostgreSQL/EnterpriseDB 9.1 and above
-* PHP 5.5.9 and above
+* PHP 5.6 and above
 * PHP Command Line Interface
 * PHP extensions
     * Ctype