diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index f8e36a2..ac43191 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -44,7 +44,7 @@ jobs:
 
       ### Deploy
       - name: Deploy
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         if: github.ref == 'refs/heads/master'
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/docs/changes/0.2.0.md b/docs/changes/0.2.0.md
index d5ad7c2..b22d0b3 100644
--- a/docs/changes/0.2.0.md
+++ b/docs/changes/0.2.0.md
@@ -13,4 +13,5 @@
 - Github Action : Roave BC Check by [@Progi1984](https://github/Progi1984) in [#9](https://github.com/PHPOffice/Math/pull/9)
 - Bump actions/checkout from 2 to 4 by [@dependabot](https://github/dependabot) in [#10](https://github.com/PHPOffice/Math/pull/10)
 - Bump actions/setup-python from 2 to 4 by [@dependabot](https://github/dependabot) in [#11](https://github.com/PHPOffice/Math/pull/11)
-- Bump actions/setup-python from 4 to 5 by [@dependabot](https://github/dependabot) in [#12](https://github.com/PHPOffice/Math/pull/12)
\ No newline at end of file
+- Bump actions/setup-python from 4 to 5 by [@dependabot](https://github/dependabot) in [#12](https://github.com/PHPOffice/Math/pull/12)
+- Bump peaceiris/actions-gh-pages from 3 to 4 by [@dependabot](https://github/dependabot) in [#12](https://github.com/PHPOffice/Math/pull/13)
\ No newline at end of file
diff --git a/src/Math/Reader/MathML.php b/src/Math/Reader/MathML.php
index 4d50a28..653a452 100644
--- a/src/Math/Reader/MathML.php
+++ b/src/Math/Reader/MathML.php
@@ -19,7 +19,7 @@ class MathML implements ReaderInterface
     /** @var DOMDocument */
     private $dom;
 
-    /** @var DOMXpath */
+    /** @var DOMXPath */
     private $xpath;
 
     public function read(string $content): ?Math
@@ -48,7 +48,7 @@ public function read(string $content): ?Math
      */
     protected function parseNode(?DOMNode $nodeRowElement, $parent): void
     {
-        $this->xpath = new DOMXpath($this->dom);
+        $this->xpath = new DOMXPath($this->dom);
         foreach ($this->xpath->query('*', $nodeRowElement) ?: [] as $nodeElement) {
             if ($parent instanceof Element\Semantics
                 && $nodeElement instanceof DOMElement
diff --git a/src/Math/Reader/OfficeMathML.php b/src/Math/Reader/OfficeMathML.php
index c856023..9cc3f73 100644
--- a/src/Math/Reader/OfficeMathML.php
+++ b/src/Math/Reader/OfficeMathML.php
@@ -18,7 +18,7 @@ class OfficeMathML implements ReaderInterface
     /** @var Math */
     protected $math;
 
-    /** @var DOMXpath */
+    /** @var DOMXPath */
     protected $xpath;
 
     /** @var string[] */
@@ -52,7 +52,7 @@ public function read(string $content): ?Math
      */
     protected function parseNode(?DOMNode $nodeRowElement, $parent): void
     {
-        $this->xpath = new DOMXpath($this->dom);
+        $this->xpath = new DOMXPath($this->dom);
         foreach ($this->xpath->query('*', $nodeRowElement) ?: [] as $nodeElement) {
             $element = $this->getElement($nodeElement);
             $parent->add($element);
diff --git a/tests/Math/Writer/MathMLTest.php b/tests/Math/Writer/MathMLTest.php
index fe22f48..06aac38 100644
--- a/tests/Math/Writer/MathMLTest.php
+++ b/tests/Math/Writer/MathMLTest.php
@@ -95,7 +95,7 @@ public function testWriteNotImplemented(): void
 
         $math = new Math();
 
-        $object = new class() extends Element\AbstractElement {};
+        $object = new class extends Element\AbstractElement {};
         $math->add($object);
 
         $writer = new MathML();
diff --git a/tests/Math/Writer/OfficeMathMLTest.php b/tests/Math/Writer/OfficeMathMLTest.php
index 385e868..40060f0 100644
--- a/tests/Math/Writer/OfficeMathMLTest.php
+++ b/tests/Math/Writer/OfficeMathMLTest.php
@@ -70,7 +70,7 @@ public function testWriteNotImplemented(): void
 
         $math = new Math();
 
-        $object = new class() extends Element\AbstractElement {};
+        $object = new class extends Element\AbstractElement {};
         $math->add($object);
 
         $writer = new OfficeMathML();