diff --git a/example/pubspec.yaml b/example/pubspec.yaml
index 496ebe5..ee59f11 100644
--- a/example/pubspec.yaml
+++ b/example/pubspec.yaml
@@ -24,7 +24,7 @@ platforms:
   macos:
 
 environment:
-  sdk: ">=3.3.0 <4.0.0"
+  sdk: "<4.0.0"
   flutter: ">=3.22.0"
 
 # Dependencies specify other packages that your package needs in order to work.
diff --git a/pubspec.yaml b/pubspec.yaml
index c5ff949..180acd6 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -11,7 +11,7 @@ platforms:
   macos:
 
 environment:
-  sdk: ">=3.3.0 <4.0.0"
+  sdk: "<4.0.0"
   flutter: ">=3.22.0"
 
 dependencies: