diff --git a/pubspec.yaml b/pubspec.yaml
index 91ce864..650a373 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -30,6 +30,6 @@ dev_dependencies:
   flutter_test:
     sdk: flutter
   meta: ^1.9.1
-  mocktail: ^0.3.0
+  mocktail: ">=0.3.0 <2.0.0"
 
 flutter: null