diff --git a/pubspec.yaml b/pubspec.yaml
index 481144c..27929ae 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -6,7 +6,7 @@ publish_to: "none" # Remove this line if you wish to publish to pub.dev
 version: 1.15.1+60
 
 environment:
-  sdk: ">=2.16.0 <3.0.0"
+  sdk: ">=2.16.0 <4.0.0"
 
 dependencies:
   flutter: