diff --git a/pubspec.yaml b/pubspec.yaml
index a81b382db5..153abc2b73 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -3,9 +3,10 @@
 # For example, now its possible at the root of this package, to execute:
 #   pub run dev:<command>
 name: repository
+publish_to: none
 
 environment:
-  sdk: ">=2.5.0-dev.1.0 <3.0.0"
+  sdk: ">=2.8.4 <3.0.0"
 
 dev_dependencies:
   dev: