diff --git a/src/VersionInfo.php b/src/VersionInfo.php
index 37435fb15..5216a6650 100644
--- a/src/VersionInfo.php
+++ b/src/VersionInfo.php
@@ -29,8 +29,8 @@ use function str_repeat;
 
 final class VersionInfo{
 	public const NAME = "PocketMine-MP";
-	public const BASE_VERSION = "4.0.0-BETA11";
-	public const IS_DEVELOPMENT_BUILD = false;
+	public const BASE_VERSION = "4.0.0-BETA12";
+	public const IS_DEVELOPMENT_BUILD = true;
 	public const BUILD_NUMBER = 0;
 	public const BUILD_CHANNEL = "beta";