Fix SDK dependency (#705)

diff --git a/angular_analyzer_plugin/pubspec.yaml b/angular_analyzer_plugin/pubspec.yaml
index 5fa2e37..43f094c 100644
--- a/angular_analyzer_plugin/pubspec.yaml
+++ b/angular_analyzer_plugin/pubspec.yaml
@@ -7,7 +7,7 @@
   - Max Kim <[email protected]>
 homepage: https://github.com/dart-lang/angular_analyzer_plugin
 environment:
-  sdk: '>=2.0.0-dev.0.0 <3.0.0'
+  sdk: '>=2.0.0 <3.0.0'
 dependencies:
   analyzer: '0.34.2'
   plugin: '^0.2.0'