diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5cf621c..c4a4baa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file. This projec
 to [Semantic Versioning] (http://semver.org/). For change log format,
 use [Keep a Changelog] (http://keepachangelog.com/).
 
+## [2.2.0] - 2023-06-26
+
+### Added
+
+- New `file` function to get file contents in configuration
+
 ## [2.1.0] - 2022-02-05
 
 ### Added
@@ -92,7 +98,7 @@ use [Keep a Changelog] (http://keepachangelog.com/).
 
 ### Removed
 
-- Remove usage of `@extends` spacial key in configuration
+- Remove usage of `@extends` special key in configuration
 - Remove merging of configurations, replaced by multiple config objects prioritized
 
 ## [1.2.0] - 2020-11-05
diff --git a/README.md b/README.md
index 8b3c97a..6707da8 100644
--- a/README.md
+++ b/README.md
@@ -2,8 +2,8 @@
 
 [![Latest Version](https://img.shields.io/packagist/v/berlioz/config.svg?style=flat-square)](https://github.com/BerliozFramework/Config/releases)
 [![Software license](https://img.shields.io/github/license/BerliozFramework/Config.svg?style=flat-square)](https://github.com/BerliozFramework/Config/blob/2.x/LICENSE)
-[![Build Status](https://img.shields.io/github/workflow/status/BerliozFramework/Config/Tests/2.x.svg?style=flat-square)](https://github.com/BerliozFramework/Config/actions/workflows/tests.yml?query=branch%3A2.x)
-[![Quality Grade](https://img.shields.io/codacy/grade/f290647a1f5143ec8299ecea9b83d6b1/2.x.svg?style=flat-square)](https://www.codacy.com/manual/BerliozFramework/Config)
+[![Build Status](https://img.shields.io/github/actions/workflow/status/BerliozFramework/Config/tests.yml?branch=2.x&style=flat-square)](https://github.com/BerliozFramework/Config/actions/workflows/tests.yml?query=branch%3A2.x)
+[![Quality Grade](https://img.shields.io/codacy/grade/f290647a1f5143ec8299ecea9b83d6b1/2.x.svg?style=flat-square)](https://www.codacy.com/gh/BerliozFramework/Config)
 [![Total Downloads](https://img.shields.io/packagist/dt/berlioz/config.svg?style=flat-square)](https://packagist.org/packages/berlioz/config)
 
 **Berlioz Configuration** is a PHP library to manage your configuration files.
@@ -92,6 +92,7 @@ Defaults functions:
 - `constant`: replace value by a constant
 - `env`: replace value by environment variable
 - `var`: replace value by variable value
+- `file`: replace value by file contents
 
 Examples:
 
diff --git a/src/Config.php b/src/Config.php
index 6b40113..e923103 100644
--- a/src/Config.php
+++ b/src/Config.php
@@ -49,6 +49,7 @@ public function __construct(
                 new ConfigFunction\ConfigFunction($this),
                 new ConfigFunction\ConstantFunction(),
                 new ConfigFunction\EnvFunction(),
+                new ConfigFunction\FileFunction(),
                 new ConfigFunction\VarFunction($this),
             ]
         );
diff --git a/src/ConfigFunction/FileFunction.php b/src/ConfigFunction/FileFunction.php
new file mode 100644
index 0000000..de877c4
--- /dev/null
+++ b/src/ConfigFunction/FileFunction.php
@@ -0,0 +1,45 @@
+<?php
+/*
+ * This file is part of Berlioz framework.
+ *
+ * @license   https://opensource.org/licenses/MIT MIT License
+ * @copyright 2021 Ronan GIRON
+ * @author    Ronan GIRON <https://github.com/ElGigi>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code, to the root.
+ */
+
+declare(strict_types=1);
+
+namespace Berlioz\Config\ConfigFunction;
+
+use LogicException;
+
+/**
+ * Class FileFunction.
+ */
+class FileFunction implements ConfigFunctionInterface
+{
+    /**
+     * @inheritDoc
+     */
+    public function getName(): string
+    {
+        return 'file';
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function execute(string $str): array|string
+    {
+        $contents = @file_get_contents($str);
+
+        if (false === $contents) {
+            throw new LogicException(sprintf('File "%s" does not exists in configuration', $str));
+        }
+
+        return $contents;
+    }
+}
\ No newline at end of file
diff --git a/tests/ConfigFunction/FileFunctionTest.php b/tests/ConfigFunction/FileFunctionTest.php
new file mode 100644
index 0000000..d2b1b51
--- /dev/null
+++ b/tests/ConfigFunction/FileFunctionTest.php
@@ -0,0 +1,43 @@
+<?php
+/*
+ * This file is part of Berlioz framework.
+ *
+ * @license   https://opensource.org/licenses/MIT MIT License
+ * @copyright 2021 Ronan GIRON
+ * @author    Ronan GIRON <https://github.com/ElGigi>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code, to the root.
+ */
+
+namespace Berlioz\Config\Tests\ConfigFunction;
+
+use Berlioz\Config\ConfigFunction\EnvFunction;
+use Berlioz\Config\ConfigFunction\FileFunction;
+use LogicException;
+use PHPUnit\Framework\TestCase;
+
+class FileFunctionTest extends TestCase
+{
+    public function testGetName()
+    {
+        $function = new FileFunction();
+
+        $this->assertEquals('file', $function->getName());
+    }
+
+    public function testExecute()
+    {
+        $function = new FileFunction();
+
+        $this->assertEquals('FOO', $function->execute(__DIR__ . '/file'));
+    }
+
+    public function testExecuteFailed()
+    {
+        $this->expectException(LogicException::class);
+
+        $function = new FileFunction();
+        $function->execute('file_unknown');
+    }
+}
diff --git a/tests/ConfigFunction/file b/tests/ConfigFunction/file
new file mode 100644
index 0000000..d96c7ef
--- /dev/null
+++ b/tests/ConfigFunction/file
@@ -0,0 +1 @@
+FOO
\ No newline at end of file
diff --git a/tests/ConfigTest.php b/tests/ConfigTest.php
index 3562c71..7058d7a 100644
--- a/tests/ConfigTest.php
+++ b/tests/ConfigTest.php
@@ -53,11 +53,11 @@ public function testAddFunction()
     {
         $config = new FakeConfig();
 
-        $this->assertCount(4, $config->getFunctions()->all());
+        $this->assertCount(5, $config->getFunctions()->all());
 
         $config->addFunction(new FakeFunction(), new EnvFunction());
 
-        $this->assertCount(5, $config->getFunctions()->all());
+        $this->assertCount(6, $config->getFunctions()->all());
     }
 
     public function testAddConfig()