diff --git a/pubspec.yaml b/pubspec.yaml
index c49075c..53a2265 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -4,7 +4,7 @@ version: 1.4.2
 homepage: https://github.com/daniloapr/cubos_widgets
 
 environment:
-  sdk: ">=2.13.0 <3.0.0"
+  sdk: "<4.0.0"
   flutter: ">=1.17.0"
 
 dependencies: