diff --git a/composer.json b/composer.json
index 0ad2e17..ccec6cd 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
   "name": "newtron/core",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "type": "library",
   "description": "Core framework package for Newtron",
   "homepage": "https://github.com/newtron-framework/core",
diff --git a/src/Quark/QuarkCompiler.php b/src/Quark/QuarkCompiler.php
index 249d6fe..2db9520 100644
--- a/src/Quark/QuarkCompiler.php
+++ b/src/Quark/QuarkCompiler.php
@@ -76,6 +76,11 @@ private function registerBuiltinDirectives(): void {
       return "\$__quark->endSlot();\n";
     };
 
+    $this->directives['include'] = function ($args) {
+      $template = trim($args, '"\'');
+      return "echo \$__quark->render('{$template}');\n";
+    };
+
     $this->directives['if'] = fn($args) => "if ({$args}) {\n";
     $this->directives['elseif'] = fn($args) => "} elseif ({$args}) {\n";
     $this->directives['else'] = fn($args) => "} else {\n";
diff --git a/tests/Unit/Document/DocumentTest.php b/tests/Unit/Document/DocumentTest.php
index 6414fc1..cb4454b 100644
--- a/tests/Unit/Document/DocumentTest.php
+++ b/tests/Unit/Document/DocumentTest.php
@@ -87,7 +87,7 @@ public function testGetSingleMeta(): void {
     );
   }
 
-  public function testSetOG(): void {
+  public function testSetOg(): void {
     App::create($this->testRootPath);
 
     $document = App::getDocument();
@@ -96,7 +96,7 @@ public function testSetOG(): void {
     $this->assertEquals(['og:test' => 'test_og'], $document->getOG());
   }
 
-  public function testGetAllOG(): void {
+  public function testGetAllOg(): void {
     App::create($this->testRootPath);
 
     $document = App::getDocument();
@@ -109,7 +109,7 @@ public function testGetAllOG(): void {
     );
   }
 
-  public function testGetSingleOG(): void {
+  public function testGetSingleOg(): void {
     App::create($this->testRootPath);
 
     $document = App::getDocument();
diff --git a/tests/Unit/Http/RequestTest.php b/tests/Unit/Http/RequestTest.php
index 2fe0b96..8896884 100644
--- a/tests/Unit/Http/RequestTest.php
+++ b/tests/Unit/Http/RequestTest.php
@@ -49,7 +49,7 @@ public function testGetCookies(): void {
     $this->assertEquals('test_value', $request->getCookie('test-cookie'));
   }
 
-  public function testGetURI(): void {
+  public function testGetUri(): void {
     $_SERVER['REQUEST_URI'] = '/test?param=value';
     $request = new Request();
 
@@ -63,7 +63,7 @@ public function testGetPath(): void {
     $this->assertEquals('/test', $request->getPath());
   }
 
-  public function testGetURL(): void {
+  public function testGetUrl(): void {
     $_SERVER['HTTPS'] = 'on';
     $_SERVER['HTTP_HOST'] = 'test.com';
     $_SERVER['REQUEST_URI'] = '/test?param=value';
@@ -118,13 +118,13 @@ public function testIsAjax(): void {
     $this->assertTrue($request->isAjax());
   }
 
-  public function testGetZeroIPWhenNotSet(): void {
+  public function testGetZeroIpWhenNotSet(): void {
     $request = new Request();
 
     $this->assertEquals('0.0.0.0', $request->getIP());
   }
 
-  public function testGetIP(): void {
+  public function testGetIp(): void {
     $_SERVER['REMOTE_ADDR'] = '127.0.0.1';
     $request = new Request();
 
diff --git a/tests/Unit/Quark/QuarkCompilerTest.php b/tests/Unit/Quark/QuarkCompilerTest.php
index aff9bff..918d3e4 100644
--- a/tests/Unit/Quark/QuarkCompilerTest.php
+++ b/tests/Unit/Quark/QuarkCompilerTest.php
@@ -19,6 +19,7 @@ public function testBuiltinDirectivesRegistered(): void {
         'outlet',
         'slot',
         'endslot',
+        'include',
         'if',
         'elseif',
         'else',
diff --git a/tests/Unit/Quark/QuarkEngineTest.php b/tests/Unit/Quark/QuarkEngineTest.php
index 15d95c1..8859b28 100644
--- a/tests/Unit/Quark/QuarkEngineTest.php
+++ b/tests/Unit/Quark/QuarkEngineTest.php
@@ -97,6 +97,16 @@ public function testRenderTemplateWithCustomOutlet(): void {
     );
   }
 
+  public function testRenderTemplateWithInclude(): void {
+    $this->createTestTemplate('test', '<div>{% include included %}</div>');
+    $this->createTestTemplate('included', '<p>Included</p>');
+
+    $this->assertEquals(
+      '<div><p>Included</p></div>',
+      $this->engine->render('test')
+    );
+  }
+
   public function testRenderTemplateWithIf(): void {
     $this->createTestTemplate('test', '<div>{% if $test %}True{% endif %}</div>');