diff --git a/src/Coverage/Processor/Text.php b/src/Coverage/Processor/Text.php
index 8325addf..c158ee35 100644
--- a/src/Coverage/Processor/Text.php
+++ b/src/Coverage/Processor/Text.php
@@ -9,7 +9,7 @@
 
 class Text extends AbstractText
 {
-    public function __construct(OutputInterface $output, bool $showColors, OutputFile $targetFile = null)
+    public function __construct(OutputInterface $output, bool $showColors, ?OutputFile $targetFile = null)
     {
         parent::__construct($output, $showColors, false, $targetFile);
     }
diff --git a/src/Coverage/Processor/TextSummary.php b/src/Coverage/Processor/TextSummary.php
index 264cc045..24d7757c 100644
--- a/src/Coverage/Processor/TextSummary.php
+++ b/src/Coverage/Processor/TextSummary.php
@@ -9,7 +9,7 @@
 
 class TextSummary extends AbstractText
 {
-    public function __construct(OutputInterface $output, bool $showColors, OutputFile $targetFile = null)
+    public function __construct(OutputInterface $output, bool $showColors, ?OutputFile $targetFile = null)
     {
         parent::__construct($output, $showColors, true, $targetFile);
     }
diff --git a/tests/Unit/Logs/LogParserTest.php b/tests/Unit/Logs/LogParserTest.php
index 19b351c2..ee802e96 100644
--- a/tests/Unit/Logs/LogParserTest.php
+++ b/tests/Unit/Logs/LogParserTest.php
@@ -81,7 +81,7 @@ public function testParseHandlesTestToBeRetried(): void
     /**
      * @param LogData[]|null $logs
      */
-    private function mockLogFetcher(array $logs = null): LogFetcher
+    private function mockLogFetcher(?array $logs = null): LogFetcher
     {
         $logs ??= $this->createLogsForOnePassedTest();
         $logLocator = $this->prophesize(LogFetcher::class);
@@ -95,7 +95,7 @@ private function mockLogFetcher(array $logs = null): LogFetcher
     /**
      * @param class-string|null $eventToBeDispatched
      */
-    private function mockEventDispatcher(string $eventToBeDispatched = null): EventDispatcherInterface
+    private function mockEventDispatcher(?string $eventToBeDispatched = null): EventDispatcherInterface
     {
         $eventDispatcher = $this->prophesize(EventDispatcherInterface::class);