diff --git a/pubspec.yaml b/pubspec.yaml
index f44dee6..92ad8af 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -16,7 +16,7 @@ environment:
 dependencies:
   collection: ^1.19.1
   meta: ^1.16.0
-  punycoder: ^0.2.0
+  punycoder: ">=0.2.0 <0.4.0"
 
 dev_dependencies:
   lints: ^5.0.0