diff --git a/src/Subscription.php b/src/Subscription.php
index 55e44f86..bc75f27e 100644
--- a/src/Subscription.php
+++ b/src/Subscription.php
@@ -527,7 +527,7 @@ public function reportUsageFor($plan, $quantity = 1, $timestamp = null)
      * @param  string|null  $plan
      * @return \Illuminate\Support\Collection
      */
-    public function usageRecords($options = [], $plan = null)
+    public function usageRecords(array $options = [], $plan = null)
     {
         if (! $plan) {
             $this->guardAgainstMultiplePlans();
@@ -543,7 +543,7 @@ public function usageRecords($options = [], $plan = null)
      * @param  array  $options
      * @return \Illuminate\Support\Collection
      */
-    public function usageRecordsFor($plan, $options = [])
+    public function usageRecordsFor($plan, array $options = [])
     {
         return $this->usageRecords($options, $plan);
     }
@@ -635,7 +635,7 @@ public function extendTrial(CarbonInterface $date)
      *
      * @throws \Laravel\Cashier\Exceptions\SubscriptionUpdateFailure
      */
-    public function swap($plans, $options = [])
+    public function swap($plans, array $options = [])
     {
         if (empty($plans = (array) $plans)) {
             throw new InvalidArgumentException('Please provide at least one plan when swapping.');
@@ -695,7 +695,7 @@ public function swap($plans, $options = [])
      * @throws \Laravel\Cashier\Exceptions\IncompletePayment
      * @throws \Laravel\Cashier\Exceptions\SubscriptionUpdateFailure
      */
-    public function swapAndInvoice($plans, $options = [])
+    public function swapAndInvoice($plans, array $options = [])
     {
         $this->alwaysInvoice();
 
@@ -794,7 +794,7 @@ protected function getSwapOptions(Collection $items, $options)
      *
      * @throws \Laravel\Cashier\Exceptions\SubscriptionUpdateFailure
      */
-    public function addPlan($plan, $quantity = 1, $options = [])
+    public function addPlan($plan, $quantity = 1, array $options = [])
     {
         $this->guardAgainstIncomplete();
 
@@ -841,7 +841,7 @@ public function addPlan($plan, $quantity = 1, $options = [])
      * @throws \Laravel\Cashier\Exceptions\IncompletePayment
      * @throws \Laravel\Cashier\Exceptions\SubscriptionUpdateFailure
      */
-    public function addPlanAndInvoice($plan, $quantity = 1, $options = [])
+    public function addPlanAndInvoice($plan, $quantity = 1, array $options = [])
     {
         $this->alwaysInvoice();
 
diff --git a/src/SubscriptionItem.php b/src/SubscriptionItem.php
index 3f43182c..e4a9c6b5 100644
--- a/src/SubscriptionItem.php
+++ b/src/SubscriptionItem.php
@@ -138,7 +138,7 @@ public function updateQuantity($quantity)
      *
      * @throws \Laravel\Cashier\Exceptions\SubscriptionUpdateFailure
      */
-    public function swap($plan, $options = [])
+    public function swap($plan, array $options = [])
     {
         $this->subscription->guardAgainstIncomplete();
 
@@ -181,7 +181,7 @@ public function swap($plan, $options = [])
      * @throws \Laravel\Cashier\Exceptions\IncompletePayment
      * @throws \Laravel\Cashier\Exceptions\SubscriptionUpdateFailure
      */
-    public function swapAndInvoice($plan, $options = [])
+    public function swapAndInvoice($plan, array $options = [])
     {
         $this->alwaysInvoice();
 
diff --git a/tests/Feature/FeatureTestCase.php b/tests/Feature/FeatureTestCase.php
index 9b29f5b5..c54a30e4 100644
--- a/tests/Feature/FeatureTestCase.php
+++ b/tests/Feature/FeatureTestCase.php
@@ -46,7 +46,7 @@ protected static function deleteStripeResource(ApiResource $resource)
         }
     }
 
-    protected function createCustomer($description = 'taylor', $options = []): User
+    protected function createCustomer($description = 'taylor', array $options = []): User
     {
         return User::create(array_merge([
             'email' => "{$description}@cashier-test.com",