diff --git a/src/test/java/com/adyen/CheckoutTest.java b/src/test/java/com/adyen/CheckoutTest.java
index 60c2e6212..e7c3601fc 100644
--- a/src/test/java/com/adyen/CheckoutTest.java
+++ b/src/test/java/com/adyen/CheckoutTest.java
@@ -294,6 +294,7 @@ public void testCreateSessionsSuccessCall() throws Exception {
     assertEquals(
         CreateCheckoutSessionResponse.StorePaymentMethodModeEnum.ASKFORCONSENT,
         createCheckoutSessionResponse.getStorePaymentMethodMode());
+    assertEquals(Boolean.TRUE, createCheckoutSessionResponse.getPayable());
   }
 
   @Test
@@ -973,6 +974,12 @@ public void testForwardToken() throws Exception {
     assertNotNull(response.getResponse());
     assertEquals(200, (int) response.getResponse().getStatus());
     assertTrue(response.getResponse().getBody().contains("PAYMENT_METHOD_ID"));
+    assertNotNull(response.getAccountUpdate());
+    assertEquals(
+        CheckoutForwardAccountUpdateResult.ResultEnum.CARDCHANGED,
+        response.getAccountUpdate().getResult());
+    assertNotNull(response.getNetworkToken());
+    assertEquals(Boolean.TRUE, response.getNetworkToken().getSwapped());
   }
 
   @Test
@@ -1156,4 +1163,143 @@ public void testPaypalUpdateOrderRequestSerialization() throws Exception {
     assertEquals("Express Shipping", parsed.getDeliveryMethods().get(0).getDescription());
     assertEquals(true, parsed.getDeliveryMethods().get(0).getSelected());
   }
+
+  @Test
+  public void testPayByBankCADirectDebitDetails() throws Exception {
+    CheckoutPaymentMethod paymentMethod =
+        new CheckoutPaymentMethod(
+            new PayByBankCADirectDebitDetails()
+                .type(PayByBankCADirectDebitDetails.TypeEnum.PAYBYBANK_CA)
+                .checkoutAttemptId("1")
+                .storedPaymentMethodId("M5N7TQ4TG5PFWR50"));
+
+    CheckoutPaymentMethod parsed = CheckoutPaymentMethod.fromJson(paymentMethod.toJson());
+
+    assertEquals(
+        PayByBankCADirectDebitDetails.TypeEnum.PAYBYBANK_CA,
+        parsed.getPayByBankCADirectDebitDetails().getType());
+    assertEquals("1", parsed.getPayByBankCADirectDebitDetails().getCheckoutAttemptId());
+    assertEquals(
+        "M5N7TQ4TG5PFWR50", parsed.getPayByBankCADirectDebitDetails().getStoredPaymentMethodId());
+  }
+
+  @Test
+  public void testPayByBankCADeserialization() throws Exception {
+    CheckoutPaymentMethod parsed =
+        CheckoutPaymentMethod.fromJson(
+            "{\n"
+                + "    \"type\": \"paybybank_ca\",\n"
+                + "    \"checkoutAttemptId\": \"1\",\n"
+                + "    \"storedPaymentMethodId\": \"M5N7TQ4TG5PFWR50\"\n"
+                + "  }");
+
+    assertEquals(
+        PayByBankCADirectDebitDetails.TypeEnum.PAYBYBANK_CA,
+        parsed.getPayByBankCADirectDebitDetails().getType());
+    assertEquals("1", parsed.getPayByBankCADirectDebitDetails().getCheckoutAttemptId());
+    assertEquals(
+        "M5N7TQ4TG5PFWR50", parsed.getPayByBankCADirectDebitDetails().getStoredPaymentMethodId());
+  }
+
+  @Test
+  public void testOpiRequestResponseSerialization() throws Exception {
+    PaymentRequest paymentRequest =
+        new PaymentRequest()
+            .merchantAccount("YOUR_MERCHANT_ACCOUNT")
+            .reference("YOUR_REFERENCE")
+            .amount(new Amount().currency("EUR").value(1000L))
+            .opi(new OpiRequest().includeIssuerId(true).includeTransToken(true));
+
+    String json = paymentRequest.toJson();
+    assertTrue(json.contains("opi"));
+
+    PaymentRequest parsed = PaymentRequest.fromJson(json);
+    assertEquals(Boolean.TRUE, parsed.getOpi().getIncludeIssuerId());
+    assertEquals(Boolean.TRUE, parsed.getOpi().getIncludeTransToken());
+
+    OpiResponse opiResponse = new OpiResponse().issuerId("ISSUER_ID").transToken("TRANS_TOKEN");
+    OpiResponse parsedOpiResponse = OpiResponse.fromJson(opiResponse.toJson());
+    assertEquals("ISSUER_ID", parsedOpiResponse.getIssuerId());
+    assertEquals("TRANS_TOKEN", parsedOpiResponse.getTransToken());
+
+    StoredPaymentMethodRequest storedPaymentMethodRequest =
+        new StoredPaymentMethodRequest().opi(new OpiRequest().includeTransToken(true));
+    assertEquals(
+        Boolean.TRUE,
+        StoredPaymentMethodRequest.fromJson(storedPaymentMethodRequest.toJson())
+            .getOpi()
+            .getIncludeTransToken());
+  }
+
+  @Test
+  public void testPaymentResponseWithOpi() throws Exception {
+    String mockResponse =
+        "{\"resultCode\":\"Authorised\",\"pspReference\":\"8815658961765250\","
+            + "\"opi\":{\"issuerId\":\"ISSUER_ID\",\"transToken\":\"TRANS_TOKEN\"}}";
+    Client client = createMockClientFromResponse(mockResponse);
+
+    PaymentRequest paymentRequest =
+        new PaymentRequest()
+            .merchantAccount("YOUR_MERCHANT_ACCOUNT")
+            .reference("YOUR_REFERENCE")
+            .amount(new Amount().currency("EUR").value(1000L))
+            .opi(new OpiRequest().includeIssuerId(true));
+
+    PaymentsApi checkout = new PaymentsApi(client);
+    PaymentResponse paymentResponse = checkout.payments(paymentRequest);
+
+    assertEquals(PaymentResponse.ResultCodeEnum.AUTHORISED, paymentResponse.getResultCode());
+    assertEquals("ISSUER_ID", paymentResponse.getOpi().getIssuerId());
+    assertEquals("TRANS_TOKEN", paymentResponse.getOpi().getTransToken());
+  }
+
+  @Test
+  public void testCreateSessionWithPayable() throws Exception {
+    CreateCheckoutSessionRequest sessionRequest =
+        new CreateCheckoutSessionRequest()
+            .merchantAccount("YOUR_MERCHANT_ACCOUNT")
+            .amount(new Amount().currency("EUR").value(1000L))
+            .reference("YOUR_PAYMENT_REFERENCE")
+            .payable(true);
+
+    String json = sessionRequest.toJson();
+    assertTrue(json.contains("payable"));
+
+    CreateCheckoutSessionRequest parsed = CreateCheckoutSessionRequest.fromJson(json);
+    assertEquals(Boolean.TRUE, parsed.getPayable());
+  }
+
+  @Test
+  public void testKlarnaNetworkDetailsKlarnaNetworkPaymentAccountId() throws Exception {
+    KlarnaNetworkDetails klarnaNetworkDetails =
+        new KlarnaNetworkDetails()
+            .type(KlarnaNetworkDetails.TypeEnum.KLARNA_NETWORK)
+            .klarnaNetworkSessionToken("SESSION_TOKEN")
+            .klarnaNetworkPaymentAccountId("KLARNA_NETWORK_PAYMENT_ACCOUNT_ID");
+
+    KlarnaNetworkDetails parsed = KlarnaNetworkDetails.fromJson(klarnaNetworkDetails.toJson());
+
+    assertEquals("SESSION_TOKEN", parsed.getKlarnaNetworkSessionToken());
+    assertEquals("KLARNA_NETWORK_PAYMENT_ACCOUNT_ID", parsed.getKlarnaNetworkPaymentAccountId());
+  }
+
+  @Test
+  public void testLineItemRiskCategory() throws Exception {
+    LineItem lineItem =
+        new LineItem().quantity(1L).amountIncludingTax(1000L).riskCategory("electronics");
+
+    LineItem parsed = LineItem.fromJson(lineItem.toJson());
+
+    assertEquals(1L, parsed.getQuantity().longValue());
+    assertEquals("electronics", parsed.getRiskCategory());
+  }
+
+  @Test
+  public void testSatispayPaymentDetailsType() throws Exception {
+    assertEquals(PaymentDetails.TypeEnum.SATISPAY, PaymentDetails.TypeEnum.fromValue("satispay"));
+
+    PaymentDetails paymentDetails = new PaymentDetails().type(PaymentDetails.TypeEnum.SATISPAY);
+    PaymentDetails parsed = PaymentDetails.fromJson(paymentDetails.toJson());
+    assertEquals(PaymentDetails.TypeEnum.SATISPAY, parsed.getType());
+  }
 }
diff --git a/src/test/resources/mocks/checkout/createSessionsResponse.json b/src/test/resources/mocks/checkout/createSessionsResponse.json
index 6271e18f8..21ca71e56 100644
--- a/src/test/resources/mocks/checkout/createSessionsResponse.json
+++ b/src/test/resources/mocks/checkout/createSessionsResponse.json
@@ -12,5 +12,6 @@
 "returnUrl": "https://your-company.com/checkout?shopperOrder=12xy..",
 "sessionData": "Ab02b4c0!BFHSPFBQTEwM0NBNTM3RfCf5",
   "mode": "embedded",
+  "payable": true,
   "storePaymentMethodMode": "askForConsent"
 }
\ No newline at end of file
diff --git a/src/test/resources/mocks/checkout/forwardResponse.json b/src/test/resources/mocks/checkout/forwardResponse.json
index bf4adf6dc..806c072d9 100644
--- a/src/test/resources/mocks/checkout/forwardResponse.json
+++ b/src/test/resources/mocks/checkout/forwardResponse.json
@@ -1,4 +1,10 @@
 {
+  "accountUpdate": {
+    "result": "CardChanged"
+  },
+  "networkToken": {
+    "swapped": true
+  },
   "pspReference": "8815658961765250",
   "response": {
     "body": "{\"data\": {\"tokenizeCreditCard\": {\"paymentMethod\": {\"id\": \"PAYMENT_METHOD_ID\"}}}}",
@@ -8,4 +14,4 @@
     "status": 200
   },
   "storedPaymentMethodId": "PAYMENT_METHOD_ID"
-}
\ No newline at end of file
+}