diff --git a/pubspec.yaml b/pubspec.yaml
index 7491968..f86dfc1 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -4,7 +4,7 @@ description: A pure Dart DLC library
 homepage: https://github.com/Horus-Org/dart-dlc
 
 environment:
-  sdk: ^3.5.0
+  sdk: '>=3.5.0 <4.0.0'
   flutter: '>= 3.22.0'
 
 # Dependencies for the project