diff --git a/app/Jobs/AutoCloseWorkOrder.php b/app/Jobs/AutoCloseWorkOrder.php
index 54ef94c..d0bdd62 100644
--- a/app/Jobs/AutoCloseWorkOrder.php
+++ b/app/Jobs/AutoCloseWorkOrder.php
@@ -21,7 +21,7 @@ public function __construct()
      *
      * @return void
      */
-    public function handle()
+    public function handle(): void
     {
         // closed replied after 1 day
         WorkOrder::where('status', 'replied')->where('updated_at', '<=', now()->subDay())->update(['status' => 'closed']);
diff --git a/app/Jobs/CheckAndChargeBalance.php b/app/Jobs/CheckAndChargeBalance.php
index 819c4c9..2b2b7e9 100644
--- a/app/Jobs/CheckAndChargeBalance.php
+++ b/app/Jobs/CheckAndChargeBalance.php
@@ -26,7 +26,7 @@ public function __construct()
      *
      * @return void
      */
-    public function handle()
+    public function handle(): void
     {
         Balance::where('paid_at', null)->chunk(100, function ($balances) {
             foreach ($balances as $balance) {
diff --git a/app/Jobs/CheckHostIfExistsOnModule.php b/app/Jobs/CheckHostIfExistsOnModule.php
index aecf34e..1bea4ac 100644
--- a/app/Jobs/CheckHostIfExistsOnModule.php
+++ b/app/Jobs/CheckHostIfExistsOnModule.php
@@ -30,7 +30,7 @@ public function __construct()
      *
      * @return void
      */
-    public function handle()
+    public function handle(): void
     {
         // 删除所有模块中不存在的主机
         Host::with('module')->where('created_at', '<', now()->subHour())->chunk(100, function ($hosts) {
diff --git a/app/Jobs/ClearTasks.php b/app/Jobs/ClearTasks.php
index 54b5303..e0aca07 100644
--- a/app/Jobs/ClearTasks.php
+++ b/app/Jobs/ClearTasks.php
@@ -29,7 +29,7 @@ public function __construct()
      *
      * @return void
      */
-    public function handle()
+    public function handle(): void
     {
         // 删除所有大于 1 天的任务
         Task::where('created_at', '<', now()->subDay())->delete();
diff --git a/app/Jobs/DeleteHost.php b/app/Jobs/DeleteHost.php
index 1521d5d..9b5a5f7 100644
--- a/app/Jobs/DeleteHost.php
+++ b/app/Jobs/DeleteHost.php
@@ -29,11 +29,9 @@ public function __construct()
      *
      * @return void
      */
-    public function handle()
+    public function handle(): void
     {
-        //
-
-        // 查找暂停时间超过3天以上的 host
+        // 查找暂停时间超过 3 天的 host
         Host::where('status', 'suspended')->where('suspended_at', '<', now()->subDays(3))->chunk(100, function ($hosts) {
             foreach ($hosts as $host) {
                 dispatch(new \App\Jobs\Module\Host($host, 'delete'));
diff --git a/app/Jobs/HostCost.php b/app/Jobs/HostCost.php
index f34b1c8..28180e8 100644
--- a/app/Jobs/HostCost.php
+++ b/app/Jobs/HostCost.php
@@ -31,7 +31,7 @@ public function __construct($minute)
      *
      * @return void
      */
-    public function handle()
+    public function handle(): void
     {
         // chunk hosts and load user
         $host = new Host();
diff --git a/app/Jobs/SendModuleEarnings.php b/app/Jobs/SendModuleEarnings.php
index 5708fbc..9849658 100644
--- a/app/Jobs/SendModuleEarnings.php
+++ b/app/Jobs/SendModuleEarnings.php
@@ -22,11 +22,8 @@ public function __construct()
      *
      * @return void
      */
-    public function handle()
+    public function handle(): void
     {
-        //
-
-
         Module::chunk(100, function ($modules) {
             foreach ($modules as $module) {
                 (new ModuleEarnings($module))