diff --git a/src/Http/Controllers/WebhookController.php b/src/Http/Controllers/WebhookController.php
index 42a0119..7f1f01a 100644
--- a/src/Http/Controllers/WebhookController.php
+++ b/src/Http/Controllers/WebhookController.php
@@ -83,8 +83,8 @@ public function handleOrderCreated(array $payload): void
             $order = $billable->orders()->create([
                 'lemon_squeezy_id' => $payload['data']['id'],
                 'customer_id' => $attributes['customer_id'],
-                'product_id' => $attributes['first_order_item']['product_id'],
-                'variant_id' => $attributes['first_order_item']['variant_id'],
+                'product_id' => (string) $attributes['first_order_item']['product_id'],
+                'variant_id' => (string) $attributes['first_order_item']['variant_id'],
                 'identifier' => $attributes['identifier'],
                 'order_number' => $attributes['order_number'],
                 'currency' => $attributes['currency'],
@@ -135,8 +135,8 @@ public function handleSubscriptionCreated(array $payload): void
             'type' => $custom['subscription_type'] ?? Subscription::DEFAULT_TYPE,
             'lemon_squeezy_id' => $payload['data']['id'],
             'status' => $attributes['status'],
-            'product_id' => $attributes['product_id'],
-            'variant_id' => $attributes['variant_id'],
+            'product_id' => (string) $attributes['product_id'],
+            'variant_id' => (string) $attributes['variant_id'],
             'card_brand' => $attributes['card_brand'] ?? null,
             'card_last_four' => $attributes['card_last_four'] ?? null,
             'trial_ends_at' => $attributes['trial_ends_at'] ? Carbon::make($attributes['trial_ends_at']) : null,
diff --git a/src/Order.php b/src/Order.php
index a5fb3f5..c849be4 100644
--- a/src/Order.php
+++ b/src/Order.php
@@ -180,8 +180,8 @@ public function sync(array $attributes): self
     {
         $this->update([
             'customer_id' => $attributes['customer_id'],
-            'product_id' => $attributes['first_order_item']['product_id'],
-            'variant_id' => $attributes['first_order_item']['variant_id'],
+            'product_id' => (string) $attributes['first_order_item']['product_id'],
+            'variant_id' => (string) $attributes['first_order_item']['variant_id'],
             'identifier' => $attributes['identifier'],
             'order_number' => $attributes['order_number'],
             'currency' => $attributes['currency'],
diff --git a/src/Subscription.php b/src/Subscription.php
index df1bae8..3447303 100644
--- a/src/Subscription.php
+++ b/src/Subscription.php
@@ -413,8 +413,8 @@ public function sync(array $attributes): self
     {
         $this->update([
             'status' => $attributes['status'],
-            'product_id' => $attributes['product_id'],
-            'variant_id' => $attributes['variant_id'],
+            'product_id' => (string) $attributes['product_id'],
+            'variant_id' => (string) $attributes['variant_id'],
             'card_brand' => $attributes['card_brand'] ?? null,
             'card_last_four' => $attributes['card_last_four'] ?? null,
             'pause_mode' => $attributes['pause']['mode'] ?? null,