diff --git a/src/CommonMarkConverter.php b/src/CommonMarkConverter.php
index 3c74e93638..fa565daf77 100644
--- a/src/CommonMarkConverter.php
+++ b/src/CommonMarkConverter.php
@@ -24,7 +24,7 @@ class CommonMarkConverter extends Converter
      *
      * This might be a typical `x.y.z` version, or `x.y-dev`.
      */
-    const VERSION = '1.0-dev';
+    const VERSION = '1.0.0-beta4';
 
     /** @var EnvironmentInterface */
     protected $environment;