diff --git a/pubspec.yaml b/pubspec.yaml
index 39de5b3..79d03ba 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -18,7 +18,7 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 version: 1.0.0+1
 
 environment:
-  sdk: ">=2.7.0 <3.0.0"
+	sdk: ">=2.11.0-213.0.dev <2.12.0"
 
 dependencies:
   flutter: