diff --git a/docs/site/Controller-generator.md b/docs/site/Controller-generator.md
index 505f16ce09d1..671d493d67e1 100644
--- a/docs/site/Controller-generator.md
+++ b/docs/site/Controller-generator.md
@@ -168,7 +168,7 @@ export class TodoController {
     },
   })
   async updateAll(
-    @requestBody() data: Todo,
+    @requestBody() data: Partial<Todo>,
     @param.query.object('where', getWhereSchemaFor(Todo)) where?: Where,
   ): Promise<number> {
     return await this.todoRepository.updateAll(data, where);
@@ -195,7 +195,7 @@ export class TodoController {
   })
   async updateById(
     @param.path.number('id') id: number,
-    @requestBody() data: Todo,
+    @requestBody() data: Partial<Todo>,
   ): Promise<void> {
     await this.todoRepository.updateById(id, data);
   }
diff --git a/docs/site/todo-list-tutorial-controller.md b/docs/site/todo-list-tutorial-controller.md
index d3c18830982c..4ba2a85de62d 100644
--- a/docs/site/todo-list-tutorial-controller.md
+++ b/docs/site/todo-list-tutorial-controller.md
@@ -197,7 +197,7 @@ export class TodoListController {
   })
   async updateById(
     @param.path.number('id') id: number,
-    @requestBody() obj: TodoList,
+    @requestBody() obj: Partial<TodoList>,
   ): Promise<void> {
     await this.todoListRepository.updateById(id, obj);
   }
diff --git a/examples/todo-list/src/controllers/todo-list.controller.ts b/examples/todo-list/src/controllers/todo-list.controller.ts
index fa0bc5c0886f..2b57dee4c8ea 100644
--- a/examples/todo-list/src/controllers/todo-list.controller.ts
+++ b/examples/todo-list/src/controllers/todo-list.controller.ts
@@ -105,7 +105,7 @@ export class TodoListController {
   })
   async updateById(
     @param.path.number('id') id: number,
-    @requestBody() obj: TodoList,
+    @requestBody() obj: Partial<TodoList>,
   ): Promise<void> {
     await this.todoListRepository.updateById(id, obj);
   }
diff --git a/examples/todo-list/src/controllers/todo.controller.ts b/examples/todo-list/src/controllers/todo.controller.ts
index 5d6a8a5ab33e..96c56c604ec4 100644
--- a/examples/todo-list/src/controllers/todo.controller.ts
+++ b/examples/todo-list/src/controllers/todo.controller.ts
@@ -88,7 +88,7 @@ export class TodoController {
   })
   async updateTodo(
     @param.path.number('id') id: number,
-    @requestBody() todo: Todo,
+    @requestBody() todo: Partial<Todo>,
   ): Promise<void> {
     await this.todoRepo.updateById(id, todo);
   }
diff --git a/examples/todo/src/controllers/todo.controller.ts b/examples/todo/src/controllers/todo.controller.ts
index 3cc8f8677ffa..84e2979f5709 100644
--- a/examples/todo/src/controllers/todo.controller.ts
+++ b/examples/todo/src/controllers/todo.controller.ts
@@ -101,7 +101,7 @@ export class TodoController {
   })
   async updateTodo(
     @param.path.number('id') id: number,
-    @requestBody() todo: Todo,
+    @requestBody() todo: Partial<Todo>,
   ): Promise<void> {
     await this.todoRepo.updateById(id, todo);
   }
diff --git a/packages/cli/generators/controller/templates/src/controllers/controller-rest-template.ts.ejs b/packages/cli/generators/controller/templates/src/controllers/controller-rest-template.ts.ejs
index 54e64004e8fc..c7000b1ffc28 100644
--- a/packages/cli/generators/controller/templates/src/controllers/controller-rest-template.ts.ejs
+++ b/packages/cli/generators/controller/templates/src/controllers/controller-rest-template.ts.ejs
@@ -77,7 +77,7 @@ export class <%= className %>Controller {
     },
   })
   async updateAll(
-    @requestBody() <%= modelVariableName %>: <%= modelName %>,
+    @requestBody() <%= modelVariableName %>: Partial<<%= modelName %>>,
     @param.query.object('where', getWhereSchemaFor(<%= modelName %>)) where?: Where,
   ): Promise<Count> {
     return await this.<%= repositoryNameCamel %>.updateAll(<%= modelVariableName %>, where);
@@ -104,7 +104,7 @@ export class <%= className %>Controller {
   })
   async updateById(
     @param.path.<%= idType %>('id') id: <%= idType %>,
-    @requestBody() <%= modelVariableName %>: <%= modelName %>,
+    @requestBody() <%= modelVariableName %>: Partial<<%= modelName %>>,
   ): Promise<void> {
     await this.<%= repositoryNameCamel %>.updateById(id, <%= modelVariableName %>);
   }