diff --git a/pubspec.yaml b/pubspec.yaml
index 920adbe..6775b22 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -5,7 +5,7 @@ homepage: https://limeprotocol.org/
 repository: https://github.com/takenet/lime-dart
 
 environment:
-  sdk: ">=2.12.0 <3.0.0"
+  sdk: ">=2.12.0 <4.0.0"
   flutter: ">=1.17.0"
 
 dependencies: