diff --git a/example/pubspec.yaml b/example/pubspec.yaml
index ef90a45..de632e2 100644
--- a/example/pubspec.yaml
+++ b/example/pubspec.yaml
@@ -2,7 +2,7 @@ name: mdmoney_example
 description: Example command line application of mdmoney package.
 
 environment:
-  sdk: '>=2.12.0 <3.0.0'
+  sdk: '>=3.5.0 <4.0.0'
 
 dependencies:
   mdmoney: