diff --git a/src/main/java/com/example/demo/app/domain/service/CategoryService.java b/src/main/java/com/example/demo/app/domain/service/CategoryService.java
index 3baccd4..ff0cab4 100644
--- a/src/main/java/com/example/demo/app/domain/service/CategoryService.java
+++ b/src/main/java/com/example/demo/app/domain/service/CategoryService.java
@@ -7,4 +7,6 @@ import com.example.demo.app.domain.model.CategoryModel;
 public interface CategoryService {
 
 	public List<CategoryModel> findAll();
+	
+	public CategoryModel findOne(Long categoryId);
 }