diff --git a/README.md b/README.md
index d256d3d..9bd259f 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,9 @@
 # api-template
 
 A template project for php-api
+
+[![GitHub License](https://img.shields.io/github/license/kilip/api-template?style=flat-square)
+](https://github.com/kilip/api-template?tab=MIT-1-ov-file)
+[![GitHub Actions Workflow Status](https://img.shields.io/github/actions/workflow/status/kilip/api-template/ci.yaml?branch=main&style=flat-square)
+](https://github.com/kilip/api-template/actions/workflows/ci.yaml)
+[![Codecov](https://img.shields.io/codecov/c/github/kilip/api-template?style=flat-square)](https://app.codecov.io/gh/kilip/api-template)
diff --git a/src/Entity/Books.php b/src/Entity/Books.php
index 3f45cf9..4ceb76a 100644
--- a/src/Entity/Books.php
+++ b/src/Entity/Books.php
@@ -24,8 +24,28 @@ class Books
     public int $id;
 
     #[ORM\Column(type: 'string')]
-    public string $title;
+    private string $title;
 
     #[ORM\Column(type: 'string')]
-    public string $author;
+    private string $author;
+
+    public function setTitle(string $title): void
+    {
+        $this->title = $title;
+    }
+
+    public function getTitle(): string
+    {
+        return $this->title;
+    }
+
+    public function setAuthor(string $author): void
+    {
+        $this->author = $author;
+    }
+
+    public function getAuthor(): string
+    {
+        return $this->author;
+    }
 }
diff --git a/tests/Functional/BooksTest.php b/tests/Functional/BooksTest.php
index 60ad6ac..7ba7adc 100644
--- a/tests/Functional/BooksTest.php
+++ b/tests/Functional/BooksTest.php
@@ -41,14 +41,16 @@ public function testCrud(): void
         $this->ensureBookNotExists('test');
 
         $book = new Books();
-        $book->author = 'Test';
-        $book->title = 'Test Book';
-        $filter = ['title' => $book->title];
+        $book->setAuthor('Test');
+        $book->setTitle('Test Book');
+        $filter = ['title' => $book->getTitle()];
 
         $manager->persist($book);
         $manager->flush();
         $this->assertInstanceOf(Books::class, $repository->findOneBy($filter));
         $this->assertNotNull($book->id);
+        $this->assertSame('Test', $book->getAuthor());
+        $this->assertSame('Test Book', $book->getTitle());
     }
 
     private function ensureBookNotExists(string $title): void