diff --git a/pubspec.yaml b/pubspec.yaml
index b8199da..edc4c41 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: http_multi_server
-version: 1.3.0
+version: 1.3.0+1
 author: "Dart Team <misc@dartlang.org>"
 homepage: http://www.dartlang.org
 description:
@@ -8,4 +8,4 @@
   unittest: ">=0.11.0 <0.12.0"
   http: ">=0.11.0 <0.12.0"
 environment:
-  sdk: ">=1.7.0 <2.0.0"
+  sdk: ">=1.7.0-edge.40587 <2.0.0"