diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 7351628..de8c8e9 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -7,7 +7,7 @@ jobs:
         runs-on: ubuntu-latest
         strategy:
             matrix:
-                php: ['7.1', '7.2', '7.3', '7.4', '8.0']
+                php: ['7.1', '7.2', '7.3', '7.4', '8.0', '8.1']
 
             fail-fast: false
 
diff --git a/readme.md b/readme.md
index 0eb032a..9789d9e 100644
--- a/readme.md
+++ b/readme.md
@@ -28,4 +28,4 @@ The recommended way to install is via Composer:
 composer require nette/component-model
 ```
 
-It requires PHP version 7.1 and supports PHP up to 8.0.
+It requires PHP version 7.1 and supports PHP up to 8.1.
diff --git a/src/ComponentModel/RecursiveComponentIterator.php b/src/ComponentModel/RecursiveComponentIterator.php
index 6a43a78..b161860 100644
--- a/src/ComponentModel/RecursiveComponentIterator.php
+++ b/src/ComponentModel/RecursiveComponentIterator.php
@@ -27,9 +27,8 @@ public function hasChildren(): bool
 
 	/**
 	 * The sub-iterator for the current element.
-	 * @return \RecursiveIterator<int|string,IComponent>
 	 */
-	public function getChildren(): \RecursiveIterator
+	public function getChildren(): self
 	{
 		return $this->current()->getComponents();
 	}