diff --git a/pubspec.yaml b/pubspec.yaml
index 7c944d2..4b17267 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -2,6 +2,5 @@
 author: "Dart Team <misc@dartlang.org>"
 homepage: http://www.dartlang.org
 description: A parser for YAML.
-dependencies:
-  unittest:
-    sdk: unittest
+dev_dependencies:
+  unittest: any