diff --git a/pubspec.yaml b/pubspec.yaml
index ca28769..49b1fc0 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -19,7 +19,7 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 version: 0.0.15+4
 
 environment:
-  sdk: '>=2.19.5 <3.0.0'
+  sdk: '>=3.0.0 <4.0.0'
 
 # Dependencies specify other packages that your package needs in order to work.
 # To automatically upgrade your package dependencies to the latest versions