diff --git a/pubspec.yaml b/pubspec.yaml
index cae6568..ca9f549 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -20,5 +20,5 @@ dependencies:
   meta: ^1.16.0
 
 dev_dependencies:
-  coolint: ^2.1.2
+  coolint: ">=2.1.2 <4.0.0"
   test: ^1.26.3