diff --git a/src/Symfony/Component/Uid/UuidV4.php b/src/Symfony/Component/Uid/UuidV4.php index 53428eeb5bf64..897e1ba627213 100644 --- a/src/Symfony/Component/Uid/UuidV4.php +++ b/src/Symfony/Component/Uid/UuidV4.php @@ -24,7 +24,7 @@ public function __construct(string $uuid = null) { if (null === $uuid) { $uuid = random_bytes(16); - $uuid[6] = $uuid[6] & "\x0F" | "\x4F"; + $uuid[6] = $uuid[6] & "\x0F" | "\x40"; $uuid[8] = $uuid[8] & "\x3F" | "\x80"; $uuid = bin2hex($uuid);