diff --git a/pubspec.yaml b/pubspec.yaml
index 9face9a3..64d2bf34 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: sass
-version: 0.0.0
+version: 1.0.0-dev
 description: A Sass implementation in Dart.
 author: Dart Team <misc@dartlang.org>
 homepage: https://github.com/dart-lang/sass