diff --git a/pubspec.yaml b/pubspec.yaml
index 4455a5714..aad1ff776 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -11,7 +11,7 @@ authors:
 description: Angular for dart.
 homepage: https://angulardart.org
 environment:
-  sdk: '>=1.2.0'
+  sdk: '>=1.3.0'
 dependencies:
   analyzer: '>=0.13.0 <0.14.0'
   browser: '>=0.10.0 <0.11.0'