diff --git a/app/Controllers/Http/Api/v1/CategoriesController.ts b/app/Controllers/Http/Api/v1/CategoriesController.ts
index 7d778f5..7173ada 100644
--- a/app/Controllers/Http/Api/v1/CategoriesController.ts
+++ b/app/Controllers/Http/Api/v1/CategoriesController.ts
@@ -7,9 +7,10 @@ import { Exception, inject, Ioc } from '@adonisjs/core/build/standalone';
 import CategoryService from 'App/Services/CategoryService';
 
 /**
- * Validatoes
+ * Validators
  */
 import CreateCategoryValidator from 'App/Validators/Category/CreateCategoryValidator';
+import UpdateCategoryValidator from 'App/Validators/Category/UpdateCategoryValidator';
 
 import BaseController from '../../BaseController';
 
@@ -78,6 +79,21 @@ export default class CategoriesController extends BaseController {
 
     return this.sendResponse(ctx, result.data, result.message, result.status);
   }
+
+  /**
+   * Update category by id
+   * PATCH /categories/:id
+   */
+  public async update(ctx: HttpContextContract) {
+    const payload = await ctx.request.validate(UpdateCategoryValidator);
+    const result = await this.categoryService.updateCategory(ctx.params.id, payload);
+
+    if (!result.success && result.error) {
+      throw new Exception(result.message, result.status, result.error.code);
+    }
+
+    return this.sendResponse(ctx, result.data, result.message, result.status);
+  }
 }
 
 new Ioc().make(CategoriesController);
diff --git a/app/Models/Category.ts b/app/Models/Category.ts
index ee832c8..2f7a4fb 100644
--- a/app/Models/Category.ts
+++ b/app/Models/Category.ts
@@ -24,10 +24,10 @@ export default class Category extends BaseModel {
   })
   public color: BelongsTo<typeof Color>;
 
-  @column.dateTime({ autoCreate: true, serializeAs: null })
+  @column.dateTime({ autoCreate: true })
   public createdAt: DateTime;
 
-  @column.dateTime({ autoCreate: true, autoUpdate: true, serializeAs: null })
+  @column.dateTime({ autoCreate: true, autoUpdate: true })
   public updatedAt: DateTime;
 
   /**
diff --git a/app/Repositories/CategoryRepository.ts b/app/Repositories/CategoryRepository.ts
index fe2c83a..2361e76 100644
--- a/app/Repositories/CategoryRepository.ts
+++ b/app/Repositories/CategoryRepository.ts
@@ -7,6 +7,7 @@ import Category from 'App/Models/Category';
  * Validators
  */
 import CreateCategoryValidator from 'App/Validators/Category/CreateCategoryValidator';
+import UpdateCategoryValidator from 'App/Validators/Category/UpdateCategoryValidator';
 
 export default class CategoryRepository {
   private Category: typeof Category;
@@ -67,4 +68,27 @@ export default class CategoryRepository {
 
     return null;
   }
+
+  /**
+   *
+   * @param id Category id
+   * @param data
+   * @returns
+   */
+  public async update(id: string | number, data: UpdateCategoryValidator['schema']['props']): Promise<Category | null> {
+    const category = await this.Category.query().where('id', id).first();
+
+    if (category) {
+      await category
+        .merge({
+          title: data.title,
+          description: data.description,
+        })
+        .save();
+
+      return category;
+    }
+
+    return null;
+  }
 }
diff --git a/app/Services/CategoryService.ts b/app/Services/CategoryService.ts
index 3b2454b..bb72edd 100644
--- a/app/Services/CategoryService.ts
+++ b/app/Services/CategoryService.ts
@@ -15,6 +15,7 @@ import CategoryRepository from 'App/Repositories/CategoryRepository';
  * Validators
  */
 import CreateCategoryValidator from 'App/Validators/Category/CreateCategoryValidator';
+import UpdateCategoryValidator from 'App/Validators/Category/UpdateCategoryValidator';
 
 @inject()
 export default class CategoryService {
@@ -114,6 +115,38 @@ export default class CategoryService {
       data,
     };
   }
+
+  /**
+   * Update category
+   *
+   * @param id Category id
+   * @returns Updated category
+   */
+  public async updateCategory(
+    id: string | number,
+    data: UpdateCategoryValidator['schema']['props']
+  ): Promise<IResponse> {
+    const category = await this.categoryRepository.update(id, data);
+
+    if (!category) {
+      return {
+        success: false,
+        status: HttpStatusEnum.NOT_FOUND,
+        message: 'Category not found.',
+        data: {},
+        error: {
+          code: 'E_NOT_FOUND',
+        },
+      };
+    }
+
+    return {
+      success: true,
+      status: HttpStatusEnum.OK,
+      message: 'Category updated.',
+      data,
+    };
+  }
 }
 
 new Ioc().make(CategoryService);
diff --git a/app/Validators/Category/CreateCategoryValidator.ts b/app/Validators/Category/CreateCategoryValidator.ts
index 1895f46..3281ea1 100644
--- a/app/Validators/Category/CreateCategoryValidator.ts
+++ b/app/Validators/Category/CreateCategoryValidator.ts
@@ -6,7 +6,7 @@ export default class CreateCategoryValidator {
 
   public schema = schema.create({
     title: schema.string(),
-    description: schema.string(),
+    description: schema.string.optional(),
   });
 
   public messages = {};
diff --git a/app/Validators/Category/UpdateCategoryValidator.ts b/app/Validators/Category/UpdateCategoryValidator.ts
new file mode 100644
index 0000000..fbfb94b
--- /dev/null
+++ b/app/Validators/Category/UpdateCategoryValidator.ts
@@ -0,0 +1,13 @@
+import { schema } from '@ioc:Adonis/Core/Validator';
+import { HttpContextContract } from '@ioc:Adonis/Core/HttpContext';
+
+export default class UpdateCategoryValidator {
+  constructor(protected ctx: HttpContextContract) {}
+
+  public schema = schema.create({
+    title: schema.string.optional(),
+    description: schema.string.optional(),
+  });
+
+  public messages = {};
+}
diff --git a/routes/apis/v1/categories.ts b/routes/apis/v1/categories.ts
index 1a31707..7e021fc 100644
--- a/routes/apis/v1/categories.ts
+++ b/routes/apis/v1/categories.ts
@@ -5,4 +5,5 @@ Route.group(() => {
   Route.get('/:id', 'Api/v1/CategoriesController.show').middleware('role:admin,teacher,student').as('categories.show');
   Route.post('/', 'Api/v1/CategoriesController.create').middleware('role:admin,teacher').as('categories.create');
   Route.delete('/:id', 'Api/v1/CategoriesController.delete').middleware('role:admin,teacher').as('categories.delete');
+  Route.patch('/:id', 'Api/v1/CategoriesController.update').middleware('role:admin,teacher').as('categories.update');
 }).prefix('categories');