diff --git a/pubspec.yaml b/pubspec.yaml
index 7d2cb4e..bb02564 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -13,7 +13,7 @@ dependencies:
 
 dev_dependencies:
   build_runner: ^2.1.2
-  json_serializable: ^5.0.0
+  json_serializable: ">=5.0.0 <7.0.0"
   mocktail: ">=0.2.0 <0.4.0"
   test: ^1.17.0
   very_good_analysis: ^2.4.0