diff --git a/app/Extensions/League/Fractal/Serializers/PterodactylSerializer.php b/app/Extensions/League/Fractal/Serializers/PterodactylSerializer.php
index 2481cf96e..5b53a5ad7 100644
--- a/app/Extensions/League/Fractal/Serializers/PterodactylSerializer.php
+++ b/app/Extensions/League/Fractal/Serializers/PterodactylSerializer.php
@@ -8,12 +8,8 @@ class PterodactylSerializer extends ArraySerializer
 {
     /**
      * Serialize an item.
-     *
-     * @param string $resourceKey
-     *
-     * @return array
      */
-    public function item($resourceKey, array $data)
+    public function item(?string $resourceKey, array $data): array
     {
         return [
             'object' => $resourceKey,
@@ -23,12 +19,8 @@ class PterodactylSerializer extends ArraySerializer
 
     /**
      * Serialize a collection.
-     *
-     * @param string $resourceKey
-     *
-     * @return array
      */
-    public function collection($resourceKey, array $data)
+    public function collection(?string $resourceKey, array $data): array
     {
         $response = [];
         foreach ($data as $datum) {
@@ -43,10 +35,8 @@ class PterodactylSerializer extends ArraySerializer
 
     /**
      * Serialize a null resource.
-     *
-     * @return array
      */
-    public function null()
+    public function null(): ?array
     {
         return [
             'object' => 'null_resource',
@@ -56,13 +46,8 @@ class PterodactylSerializer extends ArraySerializer
 
     /**
      * Merge the included resources with the parent resource being serialized.
-     *
-     * @param array $transformedData
-     * @param array $includedData
-     *
-     * @return array
      */
-    public function mergeIncludes($transformedData, $includedData)
+    public function mergeIncludes(array $transformedData, array $includedData): array
     {
         foreach ($includedData as $key => $datum) {
             $transformedData['relationships'][$key] = $datum;
diff --git a/app/Transformers/Api/Client/ScheduleTransformer.php b/app/Transformers/Api/Client/ScheduleTransformer.php
index ed718ce2b..3f42234b2 100644
--- a/app/Transformers/Api/Client/ScheduleTransformer.php
+++ b/app/Transformers/Api/Client/ScheduleTransformer.php
@@ -16,7 +16,7 @@ class ScheduleTransformer extends BaseClientTransformer
     /**
      * @var array
      */
-    protected $defaultIncludes = ['tasks'];
+    protected array $defaultIncludes = ['tasks'];
 
     /**
      * {@inheritdoc}
diff --git a/app/Transformers/Api/Client/ServerTransformer.php b/app/Transformers/Api/Client/ServerTransformer.php
index fc393d2f8..1e4412b91 100644
--- a/app/Transformers/Api/Client/ServerTransformer.php
+++ b/app/Transformers/Api/Client/ServerTransformer.php
@@ -16,7 +16,7 @@ class ServerTransformer extends BaseClientTransformer
     /**
      * @var string[]
      */
-    protected $defaultIncludes = ['allocations', 'variables'];
+    protected array $defaultIncludes = ['allocations', 'variables'];
 
     /**
      * @var array