diff --git a/test/CheckoutTest.py b/test/CheckoutTest.py
index a781aa6c..2c387d2b 100644
--- a/test/CheckoutTest.py
+++ b/test/CheckoutTest.py
@@ -19,6 +19,21 @@ class TestCheckout(unittest.TestCase):
     baseUrl = adyen.checkout.payments_api.baseUrl
     lib_version = settings.LIB_VERSION
 
+    def test_checkout_api_version(self):
+        checkout_apis = (
+            self.adyen.checkout.donations_api,
+            self.adyen.checkout.modifications_api,
+            self.adyen.checkout.orders_api,
+            self.adyen.checkout.payment_links_api,
+            self.adyen.checkout.payments_api,
+            self.adyen.checkout.recurring_api,
+            self.adyen.checkout.utility_api,
+        )
+
+        for checkout_api in checkout_apis:
+            with self.subTest(api=checkout_api.__class__.__name__):
+                self.assertEqual("https://checkout-test.adyen.com/v72", checkout_api.baseUrl)
+
     def test_payment_methods_success_mocked(self):
         request = {"merchantAccount": "YourMerchantAccount"}
         self.adyen.client = self.test.create_client_from_file(
@@ -438,6 +453,25 @@ def test_sessions_error(self):
         self.assertEqual("130", result.message["errorCode"])
         self.assertEqual("validation", result.message["errorType"])
 
+    def test_update_session(self):
+        request = {"amount": {"currency": "EUR", "value": 1000}}
+        session_id = "YOUR_SESSION_ID"
+        self.adyen.client = self.test.create_client_from_file(200, request)
+
+        self.adyen.checkout.payments_api.update_session(request, session_id)
+
+        self.adyen.client.http_client.request.assert_called_once_with(
+            "PATCH",
+            f"{self.baseUrl}/sessions/{session_id}",
+            headers={
+                "adyen-library-name": "adyen-python-api-library",
+                "adyen-library-version": settings.LIB_VERSION,
+                "User-Agent": "adyen-python-api-library/" + settings.LIB_VERSION,
+            },
+            json=request,
+            xapikey="YourXapikey",
+        )
+
     def test_payment_link(self):
         request = {
             "reference": "YOUR_ORDER_NUMBER",
diff --git a/test/TransfersTest.py b/test/TransfersTest.py
index 28cd1c30..1dc26a2a 100644
--- a/test/TransfersTest.py
+++ b/test/TransfersTest.py
@@ -103,3 +103,62 @@ def test_get_transaction(self):
             json=None,
             xapikey="YourXapikey",
         )
+
+    def test_initiate_cashout(self):
+        request = {
+            "instructingBalanceAccountId": "BA00000000000000000000001",
+            "amount": {"currency": "EUR", "value": 50000},
+            "counterparty": {"transferInstrumentId": "SE00000000000000000000001"},
+            "description": "Cashout to bank account",
+            "referenceForBeneficiary": "CASHOUT-REF-001",
+            "fee": {"amount": {"currency": "EUR", "value": 500}},
+        }
+        self.adyen.client = self.test.create_client_from_file(
+            200, request, "test/mocks/transfers/initiate-cashout.json"
+        )
+        result = self.adyen.transfers.cash_out_api.initiate_cashout(request)
+        self.assertIsNotNone(result)
+        self.assertEqual("CO00000000000000000000001", result.message["id"])
+        self.assertEqual(50000, result.message["amount"]["value"])
+        self.assertEqual(
+            ["cashoutRepayment", "cashoutFee"],
+            [transfer["type"] for transfer in result.message["transfers"]],
+        )
+
+        self.adyen.client.http_client.request.assert_called_once_with(
+            "POST",
+            f"{self.transfers_url}/cashouts",
+            headers={
+                "adyen-library-name": "adyen-python-api-library",
+                "adyen-library-version": settings.LIB_VERSION,
+                "User-Agent": "adyen-python-api-library/" + settings.LIB_VERSION,
+            },
+            json=request,
+            xapikey="YourXapikey",
+        )
+
+    def test_initiate_cashout_idempotency_key(self):
+        request = {
+            "instructingBalanceAccountId": "BA00000000000000000000001",
+            "amount": {"currency": "EUR", "value": 50000},
+            "counterparty": {"transferInstrumentId": "SE00000000000000000000001"},
+        }
+        self.adyen.client = self.test.create_client_from_file(
+            200, request, "test/mocks/transfers/initiate-cashout.json"
+        )
+        self.adyen.transfers.cash_out_api.initiate_cashout(
+            request, idempotency_key="test-idempotency-key-001"
+        )
+
+        self.adyen.client.http_client.request.assert_called_once_with(
+            "POST",
+            f"{self.transfers_url}/cashouts",
+            headers={
+                "adyen-library-name": "adyen-python-api-library",
+                "adyen-library-version": settings.LIB_VERSION,
+                "User-Agent": "adyen-python-api-library/" + settings.LIB_VERSION,
+                "Idempotency-Key": "test-idempotency-key-001",
+            },
+            json=request,
+            xapikey="YourXapikey",
+        )
diff --git a/test/mocks/transfers/initiate-cashout.json b/test/mocks/transfers/initiate-cashout.json
new file mode 100644
index 00000000..6345d895
--- /dev/null
+++ b/test/mocks/transfers/initiate-cashout.json
@@ -0,0 +1,37 @@
+{
+  "id": "CO00000000000000000000001",
+  "instructingBalanceAccountId": "BA00000000000000000000001",
+  "amount": {
+    "currency": "EUR",
+    "value": 50000
+  },
+  "counterparty": {
+    "transferInstrumentId": "SE00000000000000000000001"
+  },
+  "description": "Cashout to bank account",
+  "referenceForBeneficiary": "CASHOUT-REF-001",
+  "fee": {
+    "amount": {
+      "currency": "EUR",
+      "value": 500
+    }
+  },
+  "transfers": [
+    {
+      "id": "400F6060JMB1I0AB",
+      "type": "cashoutRepayment",
+      "amount": {
+        "currency": "EUR",
+        "value": 50500
+      }
+    },
+    {
+      "id": "400F6060JMB1I0AA",
+      "type": "cashoutFee",
+      "amount": {
+        "currency": "EUR",
+        "value": 500
+      }
+    }
+  ]
+}