diff --git a/packages/cedar/lib/src/authorization/cedar_authorization_response.dart b/packages/cedar/lib/src/authorization/cedar_authorization_response.dart
index 6dffe37f..d91d3a85 100644
--- a/packages/cedar/lib/src/authorization/cedar_authorization_response.dart
+++ b/packages/cedar/lib/src/authorization/cedar_authorization_response.dart
@@ -1,7 +1,14 @@
 import 'package:cedar/cedar.dart';
+import 'package:json_annotation/json_annotation.dart';
 
 /// The decision of an authorization request.
-enum CedarAuthorizationDecision { allow, deny }
+enum CedarAuthorizationDecision {
+  @JsonValue('Allow')
+  allow,
+
+  @JsonValue('Deny')
+  deny,
+}
 
 /// {@template cedar.cedar_authorization_response}
 /// The response to a [CedarAuthorizer] request.
diff --git a/packages/cedar/pubspec.yaml b/packages/cedar/pubspec.yaml
index c3a3f720..4bebfe8d 100644
--- a/packages/cedar/pubspec.yaml
+++ b/packages/cedar/pubspec.yaml
@@ -9,6 +9,7 @@ dependencies:
   built_collection: ^5.1.1
   built_value: ^8.9.1
   collection: ^1.18.0
+  json_annotation: ^4.8.1
   meta: ^1.11.0
 
 dev_dependencies: