1 files changed, 1 insertions, 1 deletions
diff --git a/README.md b/README.md
index e733f27..b6a9bd9 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ PHP class for two-factor authorization using [TOTP](http://en.wikipedia.org/wiki
 
 ## Requirements
 
-* Tested on PHP5.4
+* Tested on PHP 5.3 and 5.4
 * [cURL](http://php.net/manual/en/book.curl.php) when using the default `GoogleQRCodeProvider` but you can provide your own QR-code provider.