diff --git a/pubspec.yaml b/pubspec.yaml
index 0b01a39d..07a5e9f6 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -35,7 +35,7 @@ dev_dependencies:
   coverage: ^1.0.2
   intl: ">=0.17.0 <0.19.0"
   lints: ^2.0.0
-  mocktail: ^0.3.0
+  mocktail: ">=0.3.0 <2.0.0"
   test: ^1.21.0
 
   # internal package, used only in tests data