diff --git a/README.md b/README.md
index dc29728..462b7ad 100644
--- a/README.md
+++ b/README.md
@@ -815,9 +815,11 @@ The current 2026 certificate is available as `keys/webhook_bluem_nl_20260716.pem
 #### ePayments
 
 - ABN AMRO  <BR> BIC: `ABNANL2A`
+- Adyen  <BR> BIC: `ADYBNL2A`
 - ASN Bank  <BR> BIC: `ASNBNL21`
 - ASN (previously SNS)   <BR> BIC: `SNSBNL2A`
 - bunq  <BR> BIC: `BUNQNL2A`
+- BUUT  <BR> BIC: `BUUTNL2A`
 - ING   <BR> BIC: `INGBNL2A`
 - Knab  <BR> BIC: `KNABNL2H`
 - Rabobank  <BR> BIC: `RABONL2U`
diff --git a/src/Contexts/PaymentsContext.php b/src/Contexts/PaymentsContext.php
index e7dfe44..810e473 100644
--- a/src/Contexts/PaymentsContext.php
+++ b/src/Contexts/PaymentsContext.php
@@ -55,8 +55,10 @@ public function __construct()
         parent::__construct(
             [
                 new BIC("ABNANL2A", "ABN AMRO"),
+                new BIC("ADYBNL2A", "Adyen"),
                 new BIC("ASNBNL21", "ASN Bank"),
                 new BIC("BUNQNL2A", "Bunq"),
+                new BIC("BUUTNL2A", "BUUT"),
                 new BIC("INGBNL2A", "ING"),
                 new BIC("KNABNL2H", "Knab"),
                 new BIC("RABONL2U", "Rabobank"),
diff --git a/tests/Unit/BluemPaymentsTest.php b/tests/Unit/BluemPaymentsTest.php
index 8170ea0..e4cedab 100644
--- a/tests/Unit/BluemPaymentsTest.php
+++ b/tests/Unit/BluemPaymentsTest.php
@@ -10,6 +10,7 @@
 namespace Bluem\BluemPHP\Tests\Unit;
 
 use Bluem\BluemPHP\Requests\PaymentBluemRequest;
+use Bluem\BluemPHP\Contexts\PaymentsContext;
 
 class BluemPaymentsTest extends BluemTestCase
 {
@@ -40,4 +41,16 @@ public function testCreditCardRequestIncludesSecurityCodeWhenProvided(): void
 
         self::assertStringContainsString('<SecurityCode>123</SecurityCode>', $request->XmlString());
     }
+
+    public function testSupportsAllDocumentedIdealIssuingBankBics(): void
+    {
+        $expectedBics = [
+            'ABNANL2A', 'ADYBNL2A', 'ASNBNL21', 'BUNQNL2A', 'BUUTNL2A',
+            'INGBNL2A', 'KNABNL2H', 'RABONL2U', 'RBRBNL21', 'SNSBNL2A',
+            'TRIONL2U', 'FVLBNL22', 'REVOLT21', 'BITSNL2A', 'NTSBDEB1',
+            'NNBANL2G',
+        ];
+
+        self::assertSame($expectedBics, (new PaymentsContext())->getBICCodes());
+    }
 }