diff --git a/composer.json b/composer.json
index 7cfebd5..be29ebc 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
     "name": "jigarius/drall",
     "description": "Drall is a utility to run drush on multi-site Drupal installations.",
-    "version": "0.5.0",
+    "version": "1.0.0-beta1",
     "homepage": "https://github.com/jigarius/drall",
     "license": "GPL-3.0-only",
     "keywords": ["drush", "drupal"],
diff --git a/src/Drall.php b/src/Drall.php
index 48111c4..95ab1bd 100644
--- a/src/Drall.php
+++ b/src/Drall.php
@@ -22,7 +22,7 @@ final class Drall extends Application {
 
   const NAME = 'Drall';
 
-  const VERSION = '0.5.0';
+  const VERSION = '1.0.0-beta1';
 
   use LoggerAwareTrait;
   use SiteDetectorAwareTrait;
diff --git a/test/Unit/DrallTest.php b/test/Unit/DrallTest.php
index 05d875c..269ddf5 100644
--- a/test/Unit/DrallTest.php
+++ b/test/Unit/DrallTest.php
@@ -18,7 +18,7 @@ public function testName() {
   public function testVersion() {
     $app = new Drall();
     $this->assertMatchesRegularExpression(
-      '/^\d+\.\d+.\d+(-(alpha|beta|rc)\.\d+)?$/',
+      '/^\d+\.\d+.\d+(-(alpha|beta|rc)\d+)?$/',
       $app->getVersion()
     );