diff --git a/tests/Unit/Input/RequestStringInputTest.php b/tests/Unit/Input/RequestStringInputTest.php
index 665d562..f9d49e7 100644
--- a/tests/Unit/Input/RequestStringInputTest.php
+++ b/tests/Unit/Input/RequestStringInputTest.php
@@ -26,8 +26,10 @@ public function testGetAsObjectFromStringReturnsObject(): void
 
     /**
      * @dataProvider jsonValuesProviderWithoutString
+     *
+     * @param mixed $input
      */
-    public function testCreateWithoutStringThrowsException(mixed $input): void
+    public function testCreateWithoutStringThrowsException($input): void
     {
         $this->expectException(InputException::class);
         $this->expectExceptionMessage(
diff --git a/tests/Unit/Input/ResponseStringInputTest.php b/tests/Unit/Input/ResponseStringInputTest.php
index d7e0755..8b6f24c 100644
--- a/tests/Unit/Input/ResponseStringInputTest.php
+++ b/tests/Unit/Input/ResponseStringInputTest.php
@@ -26,8 +26,10 @@ public function testGetAsObjectFromStringReturnsObject(): void
 
     /**
      * @dataProvider jsonValuesProviderWithoutString
+     *
+     * @param mixed $input
      */
-    public function testCreateWithoutStringThrowsException(mixed $input): void
+    public function testCreateWithoutStringThrowsException($input): void
     {
         $this->expectException(InputException::class);
         $this->expectExceptionMessage(