diff --git a/CHANGELOG.md b/CHANGELOG.md
index 42bd56f..e5708d5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased][unreleased]
 
+## [4.2.0] - 2022-09-25
+- Updated payment methods registration.
+
 ## [4.1.0] - 2022-07-01
 ### Changed
 - Added WordPress network ID and blog ID to merchant reference ([#1](https://github.com/pronamic/wp-pronamic-pay-adyen/issues/1)).
@@ -150,8 +153,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## 1.0.0 - 2019-03-28
 - First release.
 
-[unreleased]: https://github.com/pronamic/wp-pronamic-pay-adyen/compare/4.1.0...HEAD
-[4.0.0]: https://github.com/pronamic/wp-pronamic-pay-adyen/compare/4.0.0...4.1.0
+[unreleased]: https://github.com/pronamic/wp-pronamic-pay-adyen/compare/4.2.0...HEAD
+[4.2.0]: https://github.com/pronamic/wp-pronamic-pay-adyen/compare/4.1.0...4.2.0
+[4.1.0]: https://github.com/pronamic/wp-pronamic-pay-adyen/compare/4.0.0...4.1.0
 [4.0.0]: https://github.com/pronamic/wp-pronamic-pay-adyen/compare/3.1.1...4.0.0
 [3.1.1]: https://github.com/pronamic/wp-pronamic-pay-adyen/compare/3.1.0...3.1.1
 [3.1.0]: https://github.com/pronamic/wp-pronamic-pay-adyen/compare/3.0.1...3.1.0
diff --git a/package.json b/package.json
index e90aa01..be50922 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "adyen",
-  "version": "4.1.0",
+  "version": "4.2.0",
   "description": "Adyen driver for the WordPress payment processing library.",
   "repository": {
     "type": "git",
diff --git a/src/Config.php b/src/Config.php
index c1671e8..4036f60 100644
--- a/src/Config.php
+++ b/src/Config.php
@@ -10,13 +10,13 @@
 
 namespace Pronamic\WordPress\Pay\Gateways\Adyen;
 
-use Pronamic\WordPress\Pay\Core\Gateway as Core_Gateway;
+use JsonSerializable;
 use Pronamic\WordPress\Pay\Core\GatewayConfig;
 
 /**
  * Config class
  */
-class Config extends GatewayConfig {
+class Config extends GatewayConfig implements JsonSerializable {
 	/**
 	 * Environment.
 	 * 
@@ -85,4 +85,20 @@ public function get_merchant_account() {
 	public function get_merchant_order_reference() {
 		return (string) $this->merchant_order_reference;
 	}
+
+	/**
+	 * Serialize to JSON.
+	 *
+	 * @link https://www.w3.org/TR/json-ld11/#specifying-the-type
+	 * @return mixed|void
+	 */
+	public function jsonSerialize() {
+		return [
+			'@type'            => __CLASS__,
+			'environment'      => $this->environment,
+			'merchant_account' => (string) $this->merchant_account,
+			'api_key'          => (string) $this->api_key,
+			'client_key'       => (string) $this->client_key,
+		];
+	}
 }
diff --git a/src/Gateway.php b/src/Gateway.php
index f592e18..923f9f9 100644
--- a/src/Gateway.php
+++ b/src/Gateway.php
@@ -11,8 +11,14 @@
 namespace Pronamic\WordPress\Pay\Gateways\Adyen;
 
 use Pronamic\WordPress\Pay\Core\Gateway as Core_Gateway;
+use Pronamic\WordPress\Pay\Core\PaymentMethod;
 use Pronamic\WordPress\Pay\Core\PaymentMethods;
+use Pronamic\WordPress\Pay\Core\PaymentMethodsCollection;
 use Pronamic\WordPress\Pay\Core\Util as Core_Util;
+use Pronamic\WordPress\Pay\Fields\CachedCallbackOptions;
+use Pronamic\WordPress\Pay\Fields\IDealIssuerSelectField;
+use Pronamic\WordPress\Pay\Fields\SelectFieldOption;
+use Pronamic\WordPress\Pay\Fields\SelectFieldOptionGroup;
 use Pronamic\WordPress\Pay\Payments\Payment;
 use Pronamic\WordPress\Pay\Payments\PaymentStatus;
 use Pronamic\WordPress\Pay\Plugin;
@@ -50,6 +56,8 @@ class Gateway extends Core_Gateway {
 	 * @param Config $config Config.
 	 */
 	public function __construct( Config $config ) {
+		parent::__construct();
+
 		$this->config = $config;
 
 		$this->set_method( self::METHOD_HTTP_REDIRECT );
@@ -60,72 +68,103 @@ public function __construct( Config $config ) {
 		];
 
 		$this->client = new Client( $config );
+
+		// Methods.
+		$ideal_payment_method = new PaymentMethod( PaymentMethods::IDEAL );
+
+		$ideal_issuer_field = new IDealIssuerSelectField( 'ideal-issuer' );
+
+		$ideal_issuer_field->set_required( true );
+
+		$ideal_issuer_field->set_options(
+			new CachedCallbackOptions(
+				function() {
+					return $this->get_ideal_issuers();
+				},
+				'pronamic_pay_ideal_issuers_' . \md5( \wp_json_encode( $config ) )
+			)
+		);
+
+		$ideal_payment_method->add_field( $ideal_issuer_field );
+
+		$this->register_payment_method( new PaymentMethod( PaymentMethods::AFTERPAY_COM ) );
+		$this->register_payment_method( new PaymentMethod( PaymentMethods::ALIPAY ) );
+		$this->register_payment_method( new PaymentMethod( PaymentMethods::APPLE_PAY ) );
+		$this->register_payment_method( new PaymentMethod( PaymentMethods::BANCONTACT ) );
+		$this->register_payment_method( new PaymentMethod( PaymentMethods::BLIK ) );
+		$this->register_payment_method( new PaymentMethod( PaymentMethods::CREDIT_CARD ) );
+		$this->register_payment_method( new PaymentMethod( PaymentMethods::DIRECT_DEBIT ) );
+		$this->register_payment_method( new PaymentMethod( PaymentMethods::EPS ) );
+		$this->register_payment_method( new PaymentMethod( PaymentMethods::GIROPAY ) );
+		$this->register_payment_method( new PaymentMethod( PaymentMethods::GOOGLE_PAY ) );
+		$this->register_payment_method( $ideal_payment_method );
+		$this->register_payment_method( new PaymentMethod( PaymentMethods::KLARNA_PAY_LATER ) );
+		$this->register_payment_method( new PaymentMethod( PaymentMethods::KLARNA_PAY_NOW ) );
+		$this->register_payment_method( new PaymentMethod( PaymentMethods::KLARNA_PAY_OVER_TIME ) );
+		$this->register_payment_method( new PaymentMethod( PaymentMethods::MB_WAY ) );
+		$this->register_payment_method( new PaymentMethod( PaymentMethods::SOFORT ) );
+		$this->register_payment_method( new PaymentMethod( PaymentMethods::SWISH ) );
+		$this->register_payment_method( new PaymentMethod( PaymentMethods::TWINT ) );
+		$this->register_payment_method( new PaymentMethod( PaymentMethods::VIPPS ) );
 	}
 
 	/**
-	 * Get supported payment methods
+	 * Get payment methods.
 	 *
-	 * @return array<string>
-	 * @see Core_Gateway::get_supported_payment_methods()
+	 * @param array $args Query arguments.
+	 * @return PaymentMethodsCollection
 	 */
-	public function get_supported_payment_methods() {
-		return [
-			PaymentMethods::AFTERPAY_COM,
-			PaymentMethods::ALIPAY,
-			PaymentMethods::APPLE_PAY,
-			PaymentMethods::BANCONTACT,
-			PaymentMethods::BLIK,
-			PaymentMethods::CREDIT_CARD,
-			PaymentMethods::DIRECT_DEBIT,
-			PaymentMethods::EPS,
-			PaymentMethods::GIROPAY,
-			PaymentMethods::GOOGLE_PAY,
-			PaymentMethods::IDEAL,
-			PaymentMethods::KLARNA_PAY_LATER,
-			PaymentMethods::KLARNA_PAY_NOW,
-			PaymentMethods::KLARNA_PAY_OVER_TIME,
-			PaymentMethods::MB_WAY,
-			PaymentMethods::SOFORT,
-			PaymentMethods::SWISH,
-			PaymentMethods::TWINT,
-			PaymentMethods::VIPPS,
-		];
+	public function get_payment_methods( array $args = [] ) : PaymentMethodsCollection {
+		try {
+			$this->maybe_enrich_payment_methods();
+		} catch ( \Exception $e ) {
+			// No problem.
+		}
+
+		return parent::get_payment_methods( $args );
 	}
 
 	/**
-	 * Get available payment methods.
+	 * Maybe enrich payment methods.
 	 *
-	 * @return array<int, string>
-	 * @see Core_Gateway::get_available_payment_methods()
+	 * @return void
 	 */
-	public function get_available_payment_methods() {
-		$core_payment_methods = [];
+	private function maybe_enrich_payment_methods() {
+		$cache_key = 'pronamic_pay_adyen_payment_methods_' . \md5( \wp_json_encode( $this->config ) );
 
-		$payment_methods_response = $this->client->get_payment_methods( new PaymentMethodsRequest( $this->config->get_merchant_account() ) );
+		$adyen_payment_methods = \get_transient( $cache_key );
 
-		foreach ( $payment_methods_response->get_payment_methods() as $payment_method ) {
-			$type = $payment_method->get_type();
+		if ( false === $adyen_payment_methods ) {
+			$payment_methods_response = $this->client->get_payment_methods( new PaymentMethodsRequest( $this->config->get_merchant_account() ) );
 
-			if ( null === $type ) {
-				continue;
-			}
+			$adyen_payment_methods = $payment_methods_response->get_payment_methods();
 
-			$core_payment_methods[] = PaymentMethodType::to_wp( $type );
+			\set_transient( $cache_key, $adyen_payment_methods, \DAY_IN_SECONDS );
 		}
 
-		$core_payment_methods = array_filter( $core_payment_methods );
-		$core_payment_methods = array_unique( $core_payment_methods );
+		foreach ( $adyen_payment_methods as $adyen_payment_method ) {
+			$core_payment_method_id = PaymentMethodType::to_wp( $adyen_payment_method->get_type() );
+
+			$core_payment_method = $this->get_payment_method( $core_payment_method_id );
+
+			if ( null !== $core_payment_method ) {
+				$core_payment_method->set_status( 'active' );
+			}
+		}
 
-		return $core_payment_methods;
+		foreach ( $this->payment_methods as $payment_method ) {
+			if ( '' === $payment_method->get_status() ) {
+				$payment_method->set_status( 'inactive' );
+			}
+		}
 	}
 
 	/**
-	 * Get issuers.
+	 * Get iDEAL issuers.
 	 *
-	 * @return array<string, string>|array<int, array<string, array<string, string>>>
-	 * @see Core_Gateway::get_issuers()
+	 * @return iterable<SelectFieldOption|SelectFieldOptionGroup>
 	 */
-	public function get_issuers() {
+	private function get_ideal_issuers() {
 		$issuers = [];
 
 		$payment_methods_request = new PaymentMethodsRequest( $this->config->get_merchant_account() );
@@ -144,20 +183,12 @@ public function get_issuers() {
 					$id   = $payment_method_issuer->get_id();
 					$name = $payment_method_issuer->get_name();
 
-					$issuers[ $id ] = $name;
+					$issuers[] = new SelectFieldOption( $id, $name );
 				}
 			}
 		}
 
-		if ( empty( $issuers ) ) {
-			return $issuers;
-		}
-
-		return [
-			[
-				'options' => $issuers,
-			],
-		];
+		return $issuers;
 	}
 
 	/**
diff --git a/tests/src/DropInGatewayTest.php b/tests/src/DropInGatewayTest.php
index 44ced37..f9cc8a5 100644
--- a/tests/src/DropInGatewayTest.php
+++ b/tests/src/DropInGatewayTest.php
@@ -36,23 +36,8 @@ public function test_gateway() {
 
 		$gateway = new DropInGateway( $config );
 
-		$this->assertEquals(
-			[
-				PaymentMethods::ALIPAY,
-				PaymentMethods::APPLE_PAY,
-				PaymentMethods::BANCONTACT,
-				PaymentMethods::CREDIT_CARD,
-				PaymentMethods::DIRECT_DEBIT,
-				PaymentMethods::EPS,
-				PaymentMethods::GIROPAY,
-				PaymentMethods::GOOGLE_PAY,
-				PaymentMethods::IDEAL,
-				PaymentMethods::KLARNA_PAY_LATER,
-				PaymentMethods::SOFORT,
-				PaymentMethods::SWISH,
-				PaymentMethods::VIPPS,
-			],
-			$gateway->get_supported_payment_methods()
-		);
+		$payment_methods = $gateway->get_payment_methods();
+
+		$this->assertCount( 12, $payment_methods );
 	}
 }