diff --git a/classes/Models/PrestashopRelease.php b/classes/Models/PrestashopRelease.php
index f9cae1196..7e3127f39 100644
--- a/classes/Models/PrestashopRelease.php
+++ b/classes/Models/PrestashopRelease.php
@@ -47,7 +47,7 @@ class PrestashopRelease
     public function __construct(
         string $version,
         string $stability,
-        string $distribution = null,
+        ?string $distribution = null,
         ?string $phpMaxVersion = null,
         ?string $phpMinVersion = null,
         ?string $zipDownloadUrl = null,
diff --git a/classes/Models/UpdateNotificationConfiguration.php b/classes/Models/UpdateNotificationConfiguration.php
index f66d2cbe7..6a770f876 100644
--- a/classes/Models/UpdateNotificationConfiguration.php
+++ b/classes/Models/UpdateNotificationConfiguration.php
@@ -47,7 +47,7 @@ class UpdateNotificationConfiguration
     /**
      * @param array{lastCheck: array{timestamp: int|null, version: string|null, releaseNote: string|null}, employees: array<array{employeeID: int, timestamp: int}>}|null $configuration
      */
-    public function __construct(array $configuration = null)
+    public function __construct(?array $configuration = null)
     {
         if ($configuration) {
             $lastCheck = $configuration['lastCheck'];