diff --git a/pubspec.yaml b/pubspec.yaml
index da88542..33dcdcd 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -5,7 +5,7 @@ homepage: https://appcheap.io
 repository: https://github.com/AppCheap/awesome_drawer_bar
 
 environment:
-  sdk: '>=2.12.0 <3.0.0'
+  sdk: '>=2.12.0 <4.0.0'
 
 dependencies:
   flutter: