diff --git a/dart/pubspec.yaml b/dart/pubspec.yaml
index 06814a33..ce8365c9 100644
--- a/dart/pubspec.yaml
+++ b/dart/pubspec.yaml
@@ -2,5 +2,8 @@ name: gilded_rose
 version: 0.0.1
 description: A simple console application.
 
+environment:
+  sdk: '>=2.10.0 <3.0.0'
+
 dev_dependencies:
-  test: '>=0.12.11 <0.13.0'
+  test: ^1.16.8