diff --git a/src/Pay/Adapter.php b/src/Pay/Adapter.php
index f9685dc..6679782 100644
--- a/src/Pay/Adapter.php
+++ b/src/Pay/Adapter.php
@@ -72,14 +72,26 @@ public function getCurrency(): string
     /**
      * Make a purchase request
      *
-     * @param  int  $amount
-     * @param  string  $customerId
-     * @param  string|null  $paymentMethodId
-     * @param  array<mixed>  $additionalParams
-     * @return array<mixed>
+     * @param  int  $amount Amount to charge
+     * @param  string  $customerId Customer ID
+     * @param  string|null  $paymentMethodId Payment method ID (optional)
+     * @param  array<mixed>  $additionalParams Additional parameters (optional)
+     * @return array<mixed> Result of the purchase
      */
     abstract public function purchase(int $amount, string $customerId, ?string $paymentMethodId = null, array $additionalParams = []): array;
 
+    /**
+     * Update a payment intent
+     *
+     * @param  string  $paymentId Payment intent ID
+     * @param  string|null  $paymentMethodId Payment method ID (optional)
+     * @param  int|null  $amount Amount to update (optional)
+     * @param  string|null  $currency Currency to update (optional)
+     * @param  array<mixed>  $additionalParams Additional parameters (optional)
+     * @return array<mixed> Result of the update
+     */
+    abstract public function updatePayment(string $paymentId, ?string $paymentMethodId = null, ?int $amount = null, string $currency = null, array $additionalParams = []): array;
+
     /**
      * Retry a purchase for a payment intent
      *
diff --git a/src/Pay/Adapter/Stripe.php b/src/Pay/Adapter/Stripe.php
index c42d936..3ad3e91 100644
--- a/src/Pay/Adapter/Stripe.php
+++ b/src/Pay/Adapter/Stripe.php
@@ -102,6 +102,36 @@ public function getPayment(string $paymentId): array
         return $this->execute(self::METHOD_GET, $path);
     }
 
+    /**
+     * Update a payment intent
+     *
+     * @param  string  $paymentId Payment intent ID
+     * @param  string|null  $paymentMethodId Payment method ID (optional)
+     * @param  int|null  $amount Amount to update (optional)
+     * @param  string|null  $currency Currency to update (optional)
+     * @param  array<mixed>  $additionalParams Additional parameters (optional)
+     * @return array<mixed> Result of the update
+     */
+    public function updatePayment(string $paymentId, ?string $paymentMethodId = null, ?int $amount = null, string $currency = null, array $additionalParams = []): array
+    {
+        $path = '/payment_intents/'.$paymentId;
+        $requestBody = [];
+        if ($paymentMethodId != null) {
+            $requestBody['payment_method'] = $paymentMethodId;
+        }
+        if ($amount != null) {
+            $requestBody['amount'] = $amount;
+        }
+
+        if ($currency != null) {
+            $requestBody['currency'] = $currency;
+        }
+
+        $requestBody = array_merge($requestBody, $additionalParams);
+
+        return $this->execute(self::METHOD_POST, $path, $requestBody);
+    }
+
     /**
      * Add a credit card for customer
      */
diff --git a/src/Pay/Pay.php b/src/Pay/Pay.php
index 333b072..a6fedac 100644
--- a/src/Pay/Pay.php
+++ b/src/Pay/Pay.php
@@ -122,6 +122,21 @@ public function getPayment(string $paymentId): array
         return $this->adapter->getPayment($paymentId);
     }
 
+    /**
+     * Update a payment intent
+     *
+     * @param  string  $paymentId Payment intent ID
+     * @param  string|null  $paymentMethodId Payment method ID (optional)
+     * @param  int|null  $amount Amount to update (optional)
+     * @param  string|null  $currency Currency to update (optional)
+     * @param  array<mixed>  $additionalParams Additional parameters (optional)
+     * @return array<mixed> Result of the update
+     */
+    public function updatePayment(string $paymentId, ?string $paymentMethodId = null, ?int $amount = null, string $currency = null, array $additionalParams = []): array
+    {
+        return $this->adapter->updatePayment($paymentId, $paymentMethodId, $amount, $currency, $additionalParams);
+    }
+
     /**
      * Delete Payment Method
      *
diff --git a/tests/Pay/Adapter/StripeTest.php b/tests/Pay/Adapter/StripeTest.php
index 9cfb2df..843ab0b 100644
--- a/tests/Pay/Adapter/StripeTest.php
+++ b/tests/Pay/Adapter/StripeTest.php
@@ -366,6 +366,60 @@ public function testGetPayment(array $data): array
         return $data;
     }
 
+    /**
+     * Test updatePayment: create a payment intent in a non-succeeded state, update its payment method and amount, and assert the update.
+     *
+     * @depends testCreateCustomer
+     *
+     * @param  array<mixed>  $data
+     * @return void
+     */
+    public function testUpdatePayment(array $data): void
+    {
+        $customerId = $data['customerId'];
+        // Create a payment method that will fail (card_declined)
+        $failingPm = $this->stripe->createPaymentMethod($customerId, 'card', [
+            'number' => '4000000000000341',
+            'exp_month' => 8,
+            'exp_year' => 2030,
+            'cvc' => 123,
+        ]);
+        $this->assertNotEmpty($failingPm['id']);
+        $failingPmId = $failingPm['id'];
+
+        // Create a payment intent with the failing payment method
+        $paymentIntentId = null;
+        try {
+            $this->stripe->purchase(5000, $customerId, $failingPmId);
+            $this->fail('Expected payment to fail');
+        } catch (Exception $e) {
+            $this->assertEquals(Exception::GENERIC_DECLINE, $e->getType());
+            $this->assertEquals(402, $e->getCode());
+            $paymentIntentMeta = $e->getMetadata()['payment_intent'] ?? null;
+            $paymentIntentId = is_array($paymentIntentMeta) && isset($paymentIntentMeta['id']) ? $paymentIntentMeta['id'] : $paymentIntentMeta;
+            $this->assertNotEmpty($paymentIntentId);
+        }
+
+        // Create a succeeding payment method
+        $succeedingPm = $this->stripe->createPaymentMethod($customerId, 'card', [
+            'number' => '4242424242424242',
+            'exp_month' => 8,
+            'exp_year' => 2030,
+            'cvc' => 123,
+        ]);
+        $this->assertNotEmpty($succeedingPm['id']);
+        $succeedingPmId = $succeedingPm['id'];
+
+        // Update the payment intent with the new payment method and amount
+        $newAmount = 6000;
+        $updated = $this->stripe->updatePayment((string) $paymentIntentId, $succeedingPmId, $newAmount);
+        $this->assertNotEmpty($updated['id']);
+        $this->assertEquals($paymentIntentId, $updated['id']);
+        $this->assertEquals('payment_intent', $updated['object']);
+        $this->assertEquals($newAmount, $updated['amount']);
+        $this->assertEquals($succeedingPmId, $updated['payment_method']);
+    }
+
     /**
      * @depends testPurchase
      *