diff --git a/tests/phpunit/event/HandlerListManagerTest.php b/tests/phpunit/event/HandlerListManagerTest.php
index bf35bf2dc..01de9ff84 100644
--- a/tests/phpunit/event/HandlerListManagerTest.php
+++ b/tests/phpunit/event/HandlerListManagerTest.php
@@ -40,6 +40,10 @@ class HandlerListManagerTest extends TestCase{
 		$this->resolveParentFunc = (new \ReflectionMethod(HandlerListManager::class, 'resolveNearestHandleableParent'))->getClosure();
 	}
 
+	/**
+	 * @return \Generator|mixed[][]
+	 * @phpstan-return \Generator<int, array{\ReflectionClass<Event>, bool, string}, void, void>
+	 */
 	public function isValidClassProvider() : \Generator{
 		yield [new \ReflectionClass(Event::class), false, "event base should not be handleable"];
 		yield [new \ReflectionClass(TestConcreteEvent::class), true, ""];
@@ -53,11 +57,16 @@ class HandlerListManagerTest extends TestCase{
 	 * @param \ReflectionClass $class
 	 * @param bool             $isValid
 	 * @param string           $reason
+	 * @phpstan-param \ReflectionClass<Event> $class
 	 */
 	public function testIsValidClass(\ReflectionClass $class, bool $isValid, string $reason) : void{
 		self::assertSame($isValid, ($this->isValidFunc)($class), $reason);
 	}
 
+	/**
+	 * @return \Generator|\ReflectionClass[][]
+	 * @phpstan-return \Generator<int, array{\ReflectionClass<Event>, \ReflectionClass<Event>|null}, void, void>
+	 */
 	public function resolveParentClassProvider() : \Generator{
 		yield [new \ReflectionClass(TestConcreteExtendsAllowHandleEvent::class), new \ReflectionClass(TestAbstractAllowHandleEvent::class)];
 		yield [new \ReflectionClass(TestConcreteEvent::class), null];
@@ -70,6 +79,8 @@ class HandlerListManagerTest extends TestCase{
 	 *
 	 * @param \ReflectionClass      $class
 	 * @param \ReflectionClass|null $expect
+	 * @phpstan-param \ReflectionClass<Event>      $class
+	 * @phpstan-param \ReflectionClass<Event>|null $expect
 	 */
 	public function testResolveParentClass(\ReflectionClass $class, ?\ReflectionClass $expect) : void{
 		if($expect === null){
diff --git a/tests/phpunit/plugin/ApiVersionTest.php b/tests/phpunit/plugin/ApiVersionTest.php
index 236b5b2c9..c6d8d3743 100644
--- a/tests/phpunit/plugin/ApiVersionTest.php
+++ b/tests/phpunit/plugin/ApiVersionTest.php
@@ -27,6 +27,10 @@ use PHPUnit\Framework\TestCase;
 
 class ApiVersionTest extends TestCase{
 
+	/**
+	 * @return \Generator|mixed[][]
+	 * @phpstan-return \Generator<int, array{string, string, bool}, void, void>
+	 */
 	public function compatibleApiProvider() : \Generator{
 		yield ["3.0.0", "3.0.0", true];
 		yield ["3.1.0", "3.0.0", true];
@@ -53,6 +57,10 @@ class ApiVersionTest extends TestCase{
 		self::assertSame($expected, ApiVersion::isCompatible($myVersion, [$wantVersion]), "my version: $myVersion, their version: $wantVersion, expect " . ($expected ? "yes" : "no"));
 	}
 
+	/**
+	 * @return mixed[][][]
+	 * @phpstan-return \Generator<int, array{list<string>, list<string>}, void, void>
+	 */
 	public function ambiguousVersionsProvider() : \Generator{
 		yield [["3.0.0"], []];
 		yield [["3.0.0", "3.0.1"], ["3.0.0", "3.0.1"]];