diff --git a/CHANGES.rst b/CHANGES.rst
index 5bbfc14..864b8d8 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,7 +2,7 @@ Changelog
 =========
 
 
-1.0a1 (unreleased)
+1.0a1 (2017-05-21)
 ------------------
 
 - Initial release.