diff --git a/Yoast/Sniffs/Files/TestDoublesSniff.php b/Yoast/Sniffs/Files/TestDoublesSniff.php
index 628bf53..a557913 100644
--- a/Yoast/Sniffs/Files/TestDoublesSniff.php
+++ b/Yoast/Sniffs/Files/TestDoublesSniff.php
@@ -34,17 +34,17 @@ final class TestDoublesSniff implements Sniff {
 	 * @since 1.1.0 The property type has changed from string to array.
 	 *              Use of this property with a string value has been deprecated.
 	 *
-	 * @var string[]
+	 * @var array<string>
 	 */
 	public $doubles_path = [
 		'/tests/doubles',
 	];
 
 	/**
-	 * Validated absolute target paths for test double/mock classes or an empty array
+	 * Validated absolute target paths for test fixture directories or an empty array
 	 * if the intended target directory/directories don't exist.
 	 *
-	 * @var string[]
+	 * @var array<string>
 	 */
 	private $target_paths;
 
diff --git a/Yoast/Tests/Files/TestDoublesUnitTest.php b/Yoast/Tests/Files/TestDoublesUnitTest.php
index e7759c7..09baf7d 100644
--- a/Yoast/Tests/Files/TestDoublesUnitTest.php
+++ b/Yoast/Tests/Files/TestDoublesUnitTest.php
@@ -35,7 +35,7 @@ public function setCliValues( $filename, $config ): void {
 	 *
 	 * @param string $testFileBase The base path that the unit tests files will have.
 	 *
-	 * @return string[]
+	 * @return array<string>
 	 */
 	protected function getTestFiles( $testFileBase ): array {
 		$sep        = \DIRECTORY_SEPARATOR;