diff --git a/composer.json b/composer.json
index 78900734..fb52886e 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
     },
     "require-dev": {
         "wp-cli/scaffold-command": "^1.2 || ^2",
-        "wp-cli/wp-cli-tests": "^4.3.9"
+        "wp-cli/wp-cli-tests": "^5.0.0"
     },
     "suggest": {
         "ext-json": "Used for reading and generating JSON translation files",
@@ -29,7 +29,8 @@
         "sort-packages": true,
         "allow-plugins": {
             "dealerdirect/phpcodesniffer-composer-installer": true,
-            "johnpbloch/wordpress-core-installer": true
+            "johnpbloch/wordpress-core-installer": true,
+            "phpstan/extension-installer": true
         },
         "lock": false
     },
@@ -62,6 +63,7 @@
         "behat-rerun": "rerun-behat-tests",
         "lint": "run-linter-tests",
         "phpcs": "run-phpcs-tests",
+        "phpstan": "run-phpstan-tests",
         "phpcbf": "run-phpcbf-cleanup",
         "phpunit": "run-php-unit-tests",
         "prepare-tests": "install-package-tests",
diff --git a/tests/IterableCodeExtractorTest.php b/tests/IterableCodeExtractorTest.php
index 1d770e7d..30e5e752 100644
--- a/tests/IterableCodeExtractorTest.php
+++ b/tests/IterableCodeExtractorTest.php
@@ -2,7 +2,7 @@
 
 namespace WP_CLI\I18n\Tests;
 
-use WP_CLI\I18n\IterableCodeExtractor;
+use PHPUnit\Framework\Attributes\DataProvider;
 use WP_CLI\Tests\TestCase;
 use WP_CLI\Utils;
 
@@ -228,6 +228,7 @@ protected static function file_has_file_extension_invoke( $file, $extensions ) {
 	/**
 	 * @dataProvider file_extension_extract_provider
 	 */
+	#[DataProvider( 'file_extension_extract_provider' )] // phpcs:ignore PHPCompatibility.Attributes.NewAttributes.PHPUnitAttributeFound
 	public function test_gets_file_extension_correctly( $rel_input_file, $expected_extension ) {
 		$this->assertEquals( static::file_get_extension_multi_invoke( new \SplFileObject( self::$base . $rel_input_file ) ), $expected_extension );
 	}
@@ -243,6 +244,7 @@ public static function file_extension_extract_provider() {
 	/**
 	 * @dataProvider file_extensions_matches_provider
 	 */
+	#[DataProvider( 'file_extensions_matches_provider' )] // phpcs:ignore PHPCompatibility.Attributes.NewAttributes.PHPUnitAttributeFound
 	public function test_matches_file_extensions_correctly( $rel_input_file, $matching_extensions, $expected_result ) {
 		$this->assertEquals( static::file_has_file_extension_invoke( new \SplFileObject( self::$base . $rel_input_file ), $matching_extensions ), $expected_result );
 	}