diff --git a/src/Resource/Customer.php b/src/Resource/Customer.php
index e8da6c7..eeda8b7 100644
--- a/src/Resource/Customer.php
+++ b/src/Resource/Customer.php
@@ -140,12 +140,13 @@ public function update(array $data = []): Customer
 
     /**
      * @param int $subscriptionId
+     * @param array $attributes
      * @return Subscription
      * @throws ApiException
      */
-    public function createSubscription(int $subscriptionId): Subscription
+    public function createSubscription(int $subscriptionId, array $attributes = []): Subscription
     {
-        return $this->client->subscriptions->create($this->id, $subscriptionId);
+        return $this->client->subscriptions->create($this->id, $subscriptionId, $attributes);
     }
 
     /**
diff --git a/src/Resource/SubscriptionPlan.php b/src/Resource/SubscriptionPlan.php
index d42444f..e35364f 100644
--- a/src/Resource/SubscriptionPlan.php
+++ b/src/Resource/SubscriptionPlan.php
@@ -53,11 +53,12 @@ class SubscriptionPlan extends AbstractResource
 
     /**
      * @param int $customerId
+     * @param array $attributes
      * @return Subscription
      * @throws \Marissen\eCurring\Exception\ApiException
      */
-    public function createSubscription(int $customerId): Subscription
+    public function createSubscription(int $customerId, array $attributes = []): Subscription
     {
-        return $this->client->subscriptions->create($customerId, $this->id);
+        return $this->client->subscriptions->create($customerId, $this->id, $attributes);
     }
 }