diff --git a/packages/split_button_m3e/pubspec.yaml b/packages/split_button_m3e/pubspec.yaml
index 58b4623..fa54003 100644
--- a/packages/split_button_m3e/pubspec.yaml
+++ b/packages/split_button_m3e/pubspec.yaml
@@ -5,8 +5,8 @@ repository: https://github.com/EmilyMoonstone/material_3_expressive/tree/main/pa
 issue_tracker: https://github.com/EmilyMonestone/material_3_expressive/issues
 
 environment:
-  sdk: ^3.9.2
-  flutter: ">=1.17.0"
+  sdk: ">=3.5.0 <4.0.0"
+  flutter: ">=3.22.0"
 
 dependencies:
   flutter:
@@ -18,4 +18,4 @@ dev_dependencies:
     sdk: flutter
 
 flutter:
-  uses-material-design: true
\ No newline at end of file
+  uses-material-design: true