diff --git a/pubspec.yaml b/pubspec.yaml
index 739a8f9..7c44623 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -15,5 +15,5 @@ dev_dependencies:
   lints: ^5.1.1
 
 environment:
-  sdk: ">=2.12.0 <3.0.0"
+  sdk: ">=2.12.0 <4.0.0"
   flutter: ">=1.22.0"