diff --git a/pubspec.yaml b/pubspec.yaml
index c73d3c1b..256321b6 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: sass
-version: 1.0.0-dev
+version: 1.0.0-alpha.9
 description: A Sass implementation in Dart.
 author: Dart Team <misc@dartlang.org>
 homepage: https://github.com/sass/dart-sass