diff --git a/tests/EncodingTest.php b/tests/EncodingTest.php
index cc479a6..56bd54a 100644
--- a/tests/EncodingTest.php
+++ b/tests/EncodingTest.php
@@ -11,7 +11,7 @@
 class EncodingTest extends TestCase {
 	#[DataProvider( "provideVariantEquals" )]
 	public function testVariantEquals( Encoding $encoding, string $encodingString ): void {
-		$this->assertEquals( $encoding->value, $encodingString );
+		$this->assertSame( $encoding->value, $encodingString );
 	}
 
 	public static function provideVariantEquals(): array {
diff --git a/tests/ErrorCodeTest.php b/tests/ErrorCodeTest.php
index 3948df6..0f0560d 100644
--- a/tests/ErrorCodeTest.php
+++ b/tests/ErrorCodeTest.php
@@ -11,7 +11,7 @@
 class ErrorCodeTest extends TestCase {
 	#[DataProvider( "provideVariantEquals" )]
 	public function testVariantEquals( ErrorCode $errorCode, int $errorCodeInt ): void {
-		$this->assertEquals( $errorCode->value, $errorCodeInt );
+		$this->assertSame( $errorCode->value, $errorCodeInt );
 	}
 
 	public static function provideVariantEquals(): array {
diff --git a/tests/OptionTest.php b/tests/OptionTest.php
index b76ceb6..c815e00 100644
--- a/tests/OptionTest.php
+++ b/tests/OptionTest.php
@@ -11,7 +11,7 @@
 class OptionTest extends TestCase {
 	#[DataProvider( "provideVariantEquals" )]
 	public function testVariantEquals( Option $option, int $optionInt ): void {
-		$this->assertEquals( $option->value, $optionInt );
+		$this->assertSame( $option->value, $optionInt );
 	}
 
 	public static function provideVariantEquals(): array {
diff --git a/tests/XmlParseResultTest.php b/tests/XmlParseResultTest.php
index a2c09c9..e7ba6aa 100644
--- a/tests/XmlParseResultTest.php
+++ b/tests/XmlParseResultTest.php
@@ -11,7 +11,7 @@
 class XmlParseResultTest extends TestCase {
 	#[DataProvider( "provideParseResult" )]
 	public function testIndex( XmlParseResult $result ): void {
-		$this->assertEquals(
+		$this->assertSame(
 			[ 'PARA' => [ 0, 2 ], 'NOTE' => [ 1 ] ],
 			$result->index,
 		);
@@ -19,7 +19,7 @@ public function testIndex( XmlParseResult $result ): void {
 
 	#[DataProvider( "provideParseResult" )]
 	public function testValues( XmlParseResult $result ): void {
-		$this->assertEquals(
+		$this->assertSame(
 			[
 				[
 					"tag" => "PARA",