diff --git a/package-lock.json b/package-lock.json
index 60818eb..14e8527 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -705,6 +705,11 @@
         "@types/node": "*"
       }
     },
+    "@types/uuid-validate": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/@types/uuid-validate/-/uuid-validate-0.0.1.tgz",
+      "integrity": "sha512-RbX9q0U00SLoV+l7loYX0Wrtv4QTClBC0QcdNts6x2b5G1HJN8NI9YlS1HNA6THrI9EH3OXSgya6eMQIlDjKFA=="
+    },
     "@types/yargs": {
       "version": "13.0.3",
       "resolved": "https://registry.npmjs.org/@types/yargs/-/yargs-13.0.3.tgz",
@@ -2819,8 +2824,7 @@
           "version": "2.1.1",
           "resolved": false,
           "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -2844,15 +2848,13 @@
           "version": "1.0.0",
           "resolved": false,
           "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "resolved": false,
           "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
           "dev": true,
-          "optional": true,
           "requires": {
             "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
@@ -2869,22 +2871,19 @@
           "version": "1.1.0",
           "resolved": false,
           "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "concat-map": {
           "version": "0.0.1",
           "resolved": false,
           "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "resolved": false,
           "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=",
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -3015,8 +3014,7 @@
           "version": "2.0.3",
           "resolved": false,
           "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "ini": {
           "version": "1.3.5",
@@ -3030,7 +3028,6 @@
           "resolved": false,
           "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
           "dev": true,
-          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -3047,7 +3044,6 @@
           "resolved": false,
           "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
           "dev": true,
-          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
@@ -3056,15 +3052,13 @@
           "version": "0.0.8",
           "resolved": false,
           "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=",
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "minipass": {
           "version": "2.3.5",
           "resolved": false,
           "integrity": "sha512-Gi1W4k059gyRbyVUZQ4mEqLm0YIUiGYfvxhF6SIlk3ui1WVxMTGfGdQ2SInh3PDrRTVvPKgULkpJtT4RH10+VA==",
           "dev": true,
-          "optional": true,
           "requires": {
             "safe-buffer": "^5.1.2",
             "yallist": "^3.0.0"
@@ -3085,7 +3079,6 @@
           "resolved": false,
           "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
           "dev": true,
-          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -3174,8 +3167,7 @@
           "version": "1.0.1",
           "resolved": false,
           "integrity": "sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0=",
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -3189,7 +3181,6 @@
           "resolved": false,
           "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
           "dev": true,
-          "optional": true,
           "requires": {
             "wrappy": "1"
           }
@@ -3285,8 +3276,7 @@
           "version": "5.1.2",
           "resolved": false,
           "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==",
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -3328,7 +3318,6 @@
           "resolved": false,
           "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
           "dev": true,
-          "optional": true,
           "requires": {
             "code-point-at": "^1.0.0",
             "is-fullwidth-code-point": "^1.0.0",
@@ -3350,7 +3339,6 @@
           "resolved": false,
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
           "dev": true,
-          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -3399,15 +3387,13 @@
           "version": "1.0.2",
           "resolved": false,
           "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "yallist": {
           "version": "3.0.3",
           "resolved": false,
           "integrity": "sha512-S+Zk8DEWE6oKpV+vI3qWkaK+jSbIK86pCwe2IF/xwIpQ8jEuxpw9NyaGjmp9+BoJv5FV2piqCDcoCtStppiq2A==",
-          "dev": true,
-          "optional": true
+          "dev": true
         }
       }
     },
@@ -8240,6 +8226,11 @@
       "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.3.tgz",
       "integrity": "sha512-pW0No1RGHgzlpHJO1nsVrHKpOEIxkGg1xB+v0ZmdNH5OAeAwzAVrCnI2/6Mtx+Uys6iaylxa+D3g4j63IKKjSQ=="
     },
+    "uuid-validate": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/uuid-validate/-/uuid-validate-0.0.3.tgz",
+      "integrity": "sha512-Fykw5U4eZESbq739BeLvEBFRuJODfrlmjx5eJux7W817LjRaq4b7/i4t2zxQmhcX+fAj4nMfRdTzO4tmwLKn0w=="
+    },
     "validate-npm-package-license": {
       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz",
diff --git a/package.json b/package.json
index 89e8441..20e6147 100644
--- a/package.json
+++ b/package.json
@@ -27,6 +27,7 @@
     "@types/helmet": "0.0.44",
     "@types/node": "~13.1.1",
     "@types/uuid": "^3.4.6",
+    "@types/uuid-validate": "0.0.1",
     "body-parser": "^1.19.0",
     "bson": "^4.0.2",
     "compression": "^1.7.4",
@@ -42,6 +43,7 @@
     "ts-node": "^8.3.0",
     "typescript": "^3.4.5",
     "uuid": "^3.3.3",
+    "uuid-validate": "0.0.3",
     "winston": "^3.2.1"
   },
   "devDependencies": {
diff --git a/src/Contexts/Mooc/Courses/application/CourseCreator.ts b/src/Contexts/Mooc/Courses/application/CourseCreator.ts
index 14b0699..46425ac 100644
--- a/src/Contexts/Mooc/Courses/application/CourseCreator.ts
+++ b/src/Contexts/Mooc/Courses/application/CourseCreator.ts
@@ -1,6 +1,7 @@
 import { CourseRepository } from '../domain/CourseRepository';
 import { Course } from '../domain/Course';
 import { CreateCourseRequest } from './CreateCourseRequest';
+import { CourseId } from '../../Shared/domain/Courses/CourseId';
 
 export class CourseCreator {
   private repository: CourseRepository;
@@ -10,7 +11,7 @@ export class CourseCreator {
   }
 
   async run(request: CreateCourseRequest): Promise<void> {
-    const course = new Course(request.id, request.name, request.duration);
+    const course = new Course(new CourseId(request.id), request.name, request.duration);
 
     return this.repository.save(course);
   }
diff --git a/src/Contexts/Mooc/Courses/domain/Course.ts b/src/Contexts/Mooc/Courses/domain/Course.ts
index 27b8a2b..19514e7 100644
--- a/src/Contexts/Mooc/Courses/domain/Course.ts
+++ b/src/Contexts/Mooc/Courses/domain/Course.ts
@@ -1,9 +1,11 @@
+import { CourseId } from '../../Shared/domain/Courses/CourseId';
+
 export class Course {
-  readonly id: string;
+  readonly id: CourseId;
   readonly name: string;
   readonly duration: string;
 
-  constructor(id: string, name: string, duration: string) {
+  constructor(id: CourseId, name: string, duration: string) {
     this.id = id;
     this.name = name;
     this.duration = duration;
diff --git a/src/Contexts/Mooc/Courses/domain/CourseRepository.ts b/src/Contexts/Mooc/Courses/domain/CourseRepository.ts
index 479bc0d..4588d16 100644
--- a/src/Contexts/Mooc/Courses/domain/CourseRepository.ts
+++ b/src/Contexts/Mooc/Courses/domain/CourseRepository.ts
@@ -1,8 +1,9 @@
 import { Nullable } from '../../../Shared/domain/Nullable';
 import { Course } from './Course';
+import { CourseId } from '../../Shared/domain/Courses/CourseId';
 
 export interface CourseRepository {
   save(course: Course): Promise<void>;
 
-  search(id: string): Promise<Nullable<Course>>;
+  search(id: CourseId): Promise<Nullable<Course>>;
 }
diff --git a/src/Contexts/Mooc/Courses/infrastructure/FileCourseRepository.ts b/src/Contexts/Mooc/Courses/infrastructure/FileCourseRepository.ts
index 997a6a5..3b1e5b0 100644
--- a/src/Contexts/Mooc/Courses/infrastructure/FileCourseRepository.ts
+++ b/src/Contexts/Mooc/Courses/infrastructure/FileCourseRepository.ts
@@ -3,22 +3,23 @@ import { Course } from '../domain/Course';
 import fs from 'fs';
 import BSON from 'bson';
 import { Nullable } from '../../../Shared/domain/Nullable';
+import { CourseId } from '../../Shared/domain/Courses/CourseId';
 
 export class FileCourseRepository implements CourseRepository {
   private FILE_PATH = `${__dirname}/courses`;
 
   async save(course: Course): Promise<void> {
-    const filePath = this.filePath(course.id);
+    const filePath = this.filePath(course.id.value);
     const data = BSON.serialize(course);
 
     return fs.writeFileSync(filePath, data);
   }
 
-  async search(id: string): Promise<Nullable<Course>> {
-    const filePath = this.filePath(id);
+  async search(id: CourseId): Promise<Nullable<Course>> {
+    const filePath = this.filePath(id.value);
     const exists = fs.existsSync(filePath);
 
-    return exists ? BSON.deserialize(fs.readFileSync(this.filePath(id))) : null;
+    return exists ? BSON.deserialize(fs.readFileSync(this.filePath(id.value))) : null;
   }
 
   private filePath(id: string): string {
diff --git a/src/Contexts/Mooc/Shared/domain/Courses/CourseId.ts b/src/Contexts/Mooc/Shared/domain/Courses/CourseId.ts
new file mode 100644
index 0000000..2a5eb55
--- /dev/null
+++ b/src/Contexts/Mooc/Shared/domain/Courses/CourseId.ts
@@ -0,0 +1,3 @@
+import { Uuid } from '../../../../Shared/domain/value-object/Uuid';
+
+export class CourseId extends Uuid {}
diff --git a/src/Contexts/Shared/domain/value-object/InvalidArgumentError.ts b/src/Contexts/Shared/domain/value-object/InvalidArgumentError.ts
new file mode 100644
index 0000000..1b49f05
--- /dev/null
+++ b/src/Contexts/Shared/domain/value-object/InvalidArgumentError.ts
@@ -0,0 +1 @@
+export class InvalidArgumentError extends Error {}
diff --git a/src/Contexts/Shared/domain/value-object/Uuid.ts b/src/Contexts/Shared/domain/value-object/Uuid.ts
new file mode 100644
index 0000000..da3e2ae
--- /dev/null
+++ b/src/Contexts/Shared/domain/value-object/Uuid.ts
@@ -0,0 +1,27 @@
+import uuid from 'uuid/v4';
+import validate from 'uuid-validate';
+import { InvalidArgumentError } from './InvalidArgumentError';
+
+export class Uuid {
+  readonly value: string;
+
+  constructor(value: string) {
+    this.ensureIsValidUuid(value);
+
+    this.value = value;
+  }
+
+  static random(): Uuid {
+    return new Uuid(uuid());
+  }
+
+  private ensureIsValidUuid(id: string): void {
+    if (!validate(id)) {
+      throw new InvalidArgumentError(`<${this.constructor.name}> does not allow the value <${id}>`);
+    }
+  }
+
+  toString(): string {
+    return this.value;
+  }
+}
diff --git a/tests/Contexts/Mooc/Courses/application/CourseCreator.test.ts b/tests/Contexts/Mooc/Courses/application/CourseCreator.test.ts
index dfb772c..c1cb01c 100644
--- a/tests/Contexts/Mooc/Courses/application/CourseCreator.test.ts
+++ b/tests/Contexts/Mooc/Courses/application/CourseCreator.test.ts
@@ -1,6 +1,7 @@
 import { Course } from '../../../../../src/Contexts/Mooc/Courses/domain/Course';
 import { CourseCreator } from '../../../../../src/Contexts/Mooc/Courses/application/CourseCreator';
 import { CourseRepository } from '../../../../../src/Contexts/Mooc/Courses/domain/CourseRepository';
+import { CourseId } from '../../../../../src/Contexts/Mooc/Shared/domain/Courses/CourseId';
 
 describe('Course Creator', () => {
   it('should create a valid course', async () => {
@@ -12,11 +13,11 @@ describe('Course Creator', () => {
 
     const createCourse = new CourseCreator(repository);
 
-    const id = 'some-id';
+    const id = '0766c602-d4d4-48b6-9d50-d3253123275e';
     const name = 'some-name';
     const duration = 'some-duration';
 
-    const course = new Course(id, name, duration);
+    const course = new Course(new CourseId(id), name, duration);
 
     await createCourse.run({ id, name, duration });
 
diff --git a/tests/Contexts/Mooc/Courses/infrastructure/FileCourseRepository.test.ts b/tests/Contexts/Mooc/Courses/infrastructure/FileCourseRepository.test.ts
index c43d860..d51df17 100644
--- a/tests/Contexts/Mooc/Courses/infrastructure/FileCourseRepository.test.ts
+++ b/tests/Contexts/Mooc/Courses/infrastructure/FileCourseRepository.test.ts
@@ -1,10 +1,11 @@
 import { FileCourseRepository } from '../../../../../src/Contexts/Mooc/Courses/infrastructure/FileCourseRepository';
 import { Course } from '../../../../../src/Contexts/Mooc/Courses/domain/Course';
+import { CourseId } from '../../../../../src/Contexts/Mooc/Shared/domain/Courses/CourseId';
 
 describe('Save Course', () => {
   it('should have a course', () => {
     const repository = new FileCourseRepository();
-    const course = new Course('id', 'name', 'duration');
+    const course = new Course(new CourseId('0766c602-d4d4-48b6-9d50-d3253123275e'), 'name', 'duration');
 
     repository.save(course);
   });