diff --git a/CHANGELOG.md b/CHANGELOG.md
index 13591d2..0e2473e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,13 +1,14 @@
 ChangeLog
 =========
 
-4.0.0 (2015-??-??)
-------------------
+4.0.0-alpha1 (2015-02-25)
+-------------------------
 
 * #41: Fixing bugs related to comparing URLs in `Request::getPath()`.
 * #41: This library now uses the `sabre/uri` package for uri handling.
 * Added `421 Misdirected Request` from the HTTP/2.0 spec.
 
+
 3.0.4 (2014-12-10)
 ------------------
 
diff --git a/lib/Version.php b/lib/Version.php
index 2c11a08..0be0fd0 100644
--- a/lib/Version.php
+++ b/lib/Version.php
@@ -14,6 +14,6 @@ class Version {
     /**
      * Full version number
      */
-    const VERSION = '4.0.0';
+    const VERSION = '4.0.0-alpha1';
 
 }