diff --git a/.gitignore b/.gitignore
index 2ca45ab24..5cba159e8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -38,3 +38,5 @@ out/
 
 ### properties ###
 *.properties
+
+application.yml
\ No newline at end of file
diff --git a/src/main/java/org/example/expert/domain/todo/entity/Todo.java b/src/main/java/org/example/expert/domain/todo/entity/Todo.java
index b4efcced1..ad1bc2557 100644
--- a/src/main/java/org/example/expert/domain/todo/entity/Todo.java
+++ b/src/main/java/org/example/expert/domain/todo/entity/Todo.java
@@ -17,7 +17,8 @@
 @Table(name = "todos")
 public class Todo extends Timestamped {
 
-    @Id @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;
     private String title;
     private String contents;
@@ -30,7 +31,7 @@ public class Todo extends Timestamped {
     @OneToMany(mappedBy = "todo", cascade = CascadeType.REMOVE)
     private List<Comment> comments = new ArrayList<>();
 
-    @OneToMany(mappedBy = "todo")
+    @OneToMany(mappedBy = "todo", cascade = CascadeType.ALL, orphanRemoval = true)
     private List<Manager> managers = new ArrayList<>();
 
     public Todo(String title, String contents, String weather, User user) {
diff --git a/src/main/java/org/example/expert/domain/todo/service/TodoService.java b/src/main/java/org/example/expert/domain/todo/service/TodoService.java
index 922991ce7..bc9811303 100644
--- a/src/main/java/org/example/expert/domain/todo/service/TodoService.java
+++ b/src/main/java/org/example/expert/domain/todo/service/TodoService.java
@@ -21,10 +21,11 @@
 @RequiredArgsConstructor
 @Transactional(readOnly = true)
 public class TodoService {
-
+    
     private final TodoRepository todoRepository;
     private final WeatherClient weatherClient;
 
+    @Transactional
     public TodoSaveResponse saveTodo(AuthUser authUser, TodoSaveRequest todoSaveRequest) {
         User user = User.fromAuthUser(authUser);