diff --git a/pubspec.yaml b/pubspec.yaml
index aec0060..8ce3d29 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -6,7 +6,7 @@ repository: https://github.com/Stacked-Org/crashlytics.git
 issue_tracker: https://github.com/Stacked-Org/framework/issues
 
 environment:
-  sdk: ">=2.15.0 <3.0.0"
+  sdk: "<4.0.0"
   flutter: ">=1.17.0"
 
 dependencies: