diff --git a/.github/workflows/phpunit.yml b/.github/workflows/phpunit.yml
index 6918a1b..ea45b78 100644
--- a/.github/workflows/phpunit.yml
+++ b/.github/workflows/phpunit.yml
@@ -9,8 +9,8 @@ jobs:
         php: [8.1]
         stability: [prefer-stable]
         include:
-          - laravel: 9.*
-            testbench: 7.*
+          - laravel: 10.*
+            testbench: 8.*
 
     name: P${{ matrix.php }} - L${{ matrix.laravel }} - ${{ matrix.stability }}
     steps:
diff --git a/src/StarterKitServiceProvider.php b/src/StarterKitServiceProvider.php
index 0b01143..2687d07 100644
--- a/src/StarterKitServiceProvider.php
+++ b/src/StarterKitServiceProvider.php
@@ -111,7 +111,7 @@ private function publishFiles(InstallCommand $command)
         );
     }
 
-    public static function populatePlaceholders($files, string $projectName, string $projectDescription = null): void
+    public static function populatePlaceholders($files, string $projectName, ?string $projectDescription = null): void
     {
         $replacements = [
             ':project_name' => $projectName,