diff --git a/pubspec.lock b/pubspec.lock
index fe11134..0e82d13 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -600,7 +600,7 @@ packages:
     source: hosted
     version: "0.6.3"
   json_annotation:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: json_annotation
       url: "https://pub.flutter-io.cn"
diff --git a/pubspec.yaml b/pubspec.yaml
index dda885a..936b5c8 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -70,6 +70,7 @@ dependencies:
 
   shimmer: ^2.0.0-nullsafety.0
   badges: ^2.0.0-nullsafety.1
+  json_annotation: ^4.0.1
   equatable: ^2.0.0
   #打开文件
   open_file: ^3.2.1
@@ -82,7 +83,6 @@ dev_dependencies:
   #json序列化
   json_serializable: ^4.1.1
   build_runner: ^2.0.3
-  json_model: 
 
 flutter:
   uses-material-design: true
diff --git a/tool/grind.dart b/tool/grind.dart
index 12b24e9..2c802c1 100644
--- a/tool/grind.dart
+++ b/tool/grind.dart
@@ -51,3 +51,8 @@ void sort() {
 void format() {
   DartFmt.format(libDir);
 }
+
+@Task('生成model')
+void gen() async {
+  await Pub.run('build_runner', arguments: ['build']);
+}