diff --git a/pubspec.yaml b/pubspec.yaml
index bc06e84..89b3177 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -18,7 +18,7 @@ dependencies:
     sdk: flutter
 
 dev_dependencies:
-  alchemist: ^0.6.1
+  alchemist: ">=0.6.1 <0.8.0"
   flutter_test:
     sdk: flutter
   mocktail: ^0.3.0