diff --git a/src/main/java/com/_1/spring_rest_api/config/SecurityConfig.java b/src/main/java/com/_1/spring_rest_api/config/SecurityConfig.java
index 5655d33..3be0fa5 100644
--- a/src/main/java/com/_1/spring_rest_api/config/SecurityConfig.java
+++ b/src/main/java/com/_1/spring_rest_api/config/SecurityConfig.java
@@ -32,4 +32,4 @@ public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Excepti
 
         return http.build();
     }
-}
+}
\ No newline at end of file
diff --git a/src/main/java/com/_1/spring_rest_api/entity/Course.java b/src/main/java/com/_1/spring_rest_api/entity/Course.java
index 1d52219..19415fe 100644
--- a/src/main/java/com/_1/spring_rest_api/entity/Course.java
+++ b/src/main/java/com/_1/spring_rest_api/entity/Course.java
@@ -35,7 +35,7 @@ public class Course extends BaseTimeEntity {
     @Column(name = "description", columnDefinition = "TEXT")
     private String description;
 
-    @OneToMany(mappedBy = "course")
+    @OneToMany(mappedBy = "course", cascade = CascadeType.ALL)
     @Builder.Default
     private List<Week> weeks = new ArrayList<>();