diff --git a/Tests/Command/UserPasswordHashCommandTest.php b/Tests/Command/UserPasswordHashCommandTest.php
index d5551f7..8ec8baf 100644
--- a/Tests/Command/UserPasswordHashCommandTest.php
+++ b/Tests/Command/UserPasswordHashCommandTest.php
@@ -298,7 +298,7 @@ public function testCompletionSuggestions(array $input, array $expectedSuggestio
         $this->assertSame($expectedSuggestions, $tester->complete($input));
     }
 
-    public function provideCompletionSuggestions(): iterable
+    public static function provideCompletionSuggestions(): iterable
     {
         yield 'user_class_empty' => [
             ['p@ssw0rd', ''],
diff --git a/Tests/Hasher/NativePasswordHasherTest.php b/Tests/Hasher/NativePasswordHasherTest.php
index dc29ac6..2b7bd78 100644
--- a/Tests/Hasher/NativePasswordHasherTest.php
+++ b/Tests/Hasher/NativePasswordHasherTest.php
@@ -39,7 +39,7 @@ public function testCostInRange($cost)
         $this->assertInstanceOf(NativePasswordHasher::class, new NativePasswordHasher(null, null, $cost));
     }
 
-    public function validRangeData()
+    public static function validRangeData()
     {
         $costs = range(4, 31);
         array_walk($costs, function (&$cost) { $cost = [$cost]; });