diff --git a/LICENSE.md b/LICENSE
similarity index 100%
rename from LICENSE.md
rename to LICENSE
diff --git a/pubspec.yaml b/pubspec.yaml
index a2fb18c..1021310 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -4,7 +4,7 @@ version: 2.0.1
 homepage: https://github.com/luanpotter/ordered_set
 
 environment:
-  sdk: '>=2.0.0-dev.54.0 <3.0.0'
+  sdk: '>=2.7.0 <3.0.0'
 
 dev_dependencies:
   test: ^1.9.4