diff --git a/docs/simplesamlphp-install.txt b/docs/simplesamlphp-install.txt
index e001f6ecc3e9cacd717b17e76a3143b1c5ecf058..375b5ccf472ea2f6a5157d58c5bbd8b76e3f8323 100644
--- a/docs/simplesamlphp-install.txt
+++ b/docs/simplesamlphp-install.txt
@@ -33,7 +33,7 @@ Prerequisites
 -------------
 
  * Some webserver capable of executing PHP scripts.
- * PHP version >= 5.2.0.
+ * PHP version >= 5.3.0.
  * Support for the following PHP extensions:
    * Always required: `date`, `dom`, `hash`, `libxml`, `openssl`, `pcre`, `SPL`, `zlib`, `mcrypt`
    * When authenticating against LDAP server: `ldap`