diff --git a/pubspec.lock b/pubspec.lock
index 0abdecc..5749aef 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -394,4 +394,4 @@ packages:
     source: hosted
     version: "3.1.3"
 sdks:
-  dart: ">=3.9.3 <4.0.0"
+  dart: ">=3.9.0 <4.0.0"
diff --git a/pubspec.yaml b/pubspec.yaml
index f3bb4f1..50ea709 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -9,7 +9,7 @@ topics:
   - codec
 
 environment:
-  sdk: ^3.9.3
+  sdk: ^3.9.0
 
 dev_dependencies:
   lints: ^6.0.0