diff --git a/optimus/pubspec.yaml b/optimus/pubspec.yaml
index dd0d6067..f3933e91 100644
--- a/optimus/pubspec.yaml
+++ b/optimus/pubspec.yaml
@@ -22,7 +22,7 @@ dev_dependencies:
     sdk: flutter
   freezed: ">=1.0.0 <3.0.0"
   mews_pedantic: ^0.23.0
-  theme_tailor: ^2.0.0
+  theme_tailor: ">=2.0.0 <2.1.0"
 flutter:
   assets:
     - assets/