diff --git a/mpt_api_client/mpt_client.py b/mpt_api_client/mpt_client.py
index 633e3168..7e7af763 100644
--- a/mpt_api_client/mpt_client.py
+++ b/mpt_api_client/mpt_client.py
@@ -1,7 +1,16 @@
 from typing import Self
 
 from mpt_api_client.http import AsyncHTTPClient, HTTPClient
-from mpt_api_client.resources import AsyncCatalog, AsyncCommerce, Catalog, Commerce
+from mpt_api_client.resources import (
+    AsyncAudit,
+    AsyncBilling,
+    AsyncCatalog,
+    AsyncCommerce,
+    Audit,
+    Billing,
+    Catalog,
+    Commerce,
+)
 
 
 class AsyncMPTClient:
@@ -37,6 +46,16 @@ def commerce(self) -> AsyncCommerce:
         """Commerce MPT API Client."""
         return AsyncCommerce(http_client=self.http_client)
 
+    @property
+    def audit(self) -> AsyncAudit:
+        """Audit MPT API Client."""
+        return AsyncAudit(http_client=self.http_client)
+
+    @property
+    def billing(self) -> AsyncBilling:
+        """Billing MPT API Client."""
+        return AsyncBilling(http_client=self.http_client)
+
 
 class MPTClient:
     """MPT API Client."""
@@ -75,3 +94,13 @@ def commerce(self) -> Commerce:
     def catalog(self) -> Catalog:
         """Catalog MPT API Client."""
         return Catalog(http_client=self.http_client)
+
+    @property
+    def audit(self) -> Audit:
+        """Audit MPT API Client."""
+        return Audit(http_client=self.http_client)
+
+    @property
+    def billing(self) -> Billing:
+        """Billing MPT API Client."""
+        return Billing(http_client=self.http_client)
diff --git a/mpt_api_client/resources/__init__.py b/mpt_api_client/resources/__init__.py
index b75c3cf6..6d0b9302 100644
--- a/mpt_api_client/resources/__init__.py
+++ b/mpt_api_client/resources/__init__.py
@@ -1,4 +1,15 @@
+from mpt_api_client.resources.audit import AsyncAudit, Audit
+from mpt_api_client.resources.billing import AsyncBilling, Billing
 from mpt_api_client.resources.catalog import AsyncCatalog, Catalog
 from mpt_api_client.resources.commerce import AsyncCommerce, Commerce
 
-__all__ = ["AsyncCatalog", "AsyncCommerce", "Catalog", "Commerce"]  # noqa: WPS410
+__all__ = [  # noqa: WPS410
+    "AsyncAudit",
+    "AsyncBilling",
+    "AsyncCatalog",
+    "AsyncCommerce",
+    "Audit",
+    "Billing",
+    "Catalog",
+    "Commerce",
+]
diff --git a/mpt_api_client/resources/audit/__init__.py b/mpt_api_client/resources/audit/__init__.py
new file mode 100644
index 00000000..8938da3e
--- /dev/null
+++ b/mpt_api_client/resources/audit/__init__.py
@@ -0,0 +1,3 @@
+from mpt_api_client.resources.audit.audit import AsyncAudit, Audit
+
+__all__ = ["AsyncAudit", "Audit"]  # noqa: WPS410
diff --git a/mpt_api_client/resources/audit/audit.py b/mpt_api_client/resources/audit/audit.py
index a560ca54..e29abcc6 100644
--- a/mpt_api_client/resources/audit/audit.py
+++ b/mpt_api_client/resources/audit/audit.py
@@ -1,4 +1,8 @@
 from mpt_api_client.http import AsyncHTTPClient, HTTPClient
+from mpt_api_client.resources.audit.event_types import (
+    AsyncEventTypesService,
+    EventTypesService,
+)
 from mpt_api_client.resources.audit.records import AsyncRecordsService, RecordsService
 
 
@@ -13,6 +17,11 @@ def records(self) -> RecordsService:
         """Records service."""
         return RecordsService(http_client=self.http_client)
 
+    @property
+    def event_types(self) -> EventTypesService:
+        """Event Types service."""
+        return EventTypesService(http_client=self.http_client)
+
 
 class AsyncAudit:
     """Async Audit MPT API Module."""
@@ -24,3 +33,8 @@ def __init__(self, *, http_client: AsyncHTTPClient):
     def records(self) -> AsyncRecordsService:
         """Records service."""
         return AsyncRecordsService(http_client=self.http_client)
+
+    @property
+    def event_types(self) -> AsyncEventTypesService:
+        """Event Types service."""
+        return AsyncEventTypesService(http_client=self.http_client)
diff --git a/mpt_api_client/resources/audit/event_types.py b/mpt_api_client/resources/audit/event_types.py
new file mode 100644
index 00000000..d9f30911
--- /dev/null
+++ b/mpt_api_client/resources/audit/event_types.py
@@ -0,0 +1,28 @@
+from mpt_api_client.http import AsyncService, Service
+from mpt_api_client.http.mixins import (
+    AsyncUpdateMixin,
+    UpdateMixin,
+)
+from mpt_api_client.models import Model
+
+
+class EventType(Model):
+    """Event Type resource."""
+
+
+class EventTypesServiceConfig:
+    """Event Types service configuration."""
+
+    _endpoint = "/public/v1/audit/event-types"
+    _model_class = EventType
+    _collection_key = "data"
+
+
+class EventTypesService(UpdateMixin[EventType], Service[EventType], EventTypesServiceConfig):
+    """Event Types service."""
+
+
+class AsyncEventTypesService(
+    AsyncUpdateMixin[EventType], AsyncService[EventType], EventTypesServiceConfig
+):
+    """Async Event Types service."""
diff --git a/mpt_api_client/resources/billing/__init__.py b/mpt_api_client/resources/billing/__init__.py
index e69de29b..4d1cb705 100644
--- a/mpt_api_client/resources/billing/__init__.py
+++ b/mpt_api_client/resources/billing/__init__.py
@@ -0,0 +1,3 @@
+from mpt_api_client.resources.billing.billing import AsyncBilling, Billing
+
+__all__ = ["AsyncBilling", "Billing"]  # noqa: WPS410
diff --git a/tests/resources/audit/test_audit.py b/tests/resources/audit/test_audit.py
index 06c24fde..58d37723 100644
--- a/tests/resources/audit/test_audit.py
+++ b/tests/resources/audit/test_audit.py
@@ -1,6 +1,7 @@
 import pytest
 
 from mpt_api_client.resources.audit.audit import AsyncAudit, Audit
+from mpt_api_client.resources.audit.event_types import AsyncEventTypesService, EventTypesService
 from mpt_api_client.resources.audit.records import AsyncRecordsService, RecordsService
 
 
@@ -18,6 +19,7 @@ def async_audit(async_http_client):
     ("property_name", "expected_service_class"),
     [
         ("records", RecordsService),
+        ("event_types", EventTypesService),
     ],
 )
 def test_audit_properties(audit, property_name, expected_service_class):
@@ -32,6 +34,7 @@ def test_audit_properties(audit, property_name, expected_service_class):
     ("property_name", "expected_service_class"),
     [
         ("records", AsyncRecordsService),
+        ("event_types", AsyncEventTypesService),
     ],
 )
 def test_async_audit_properties(async_audit, property_name, expected_service_class):
diff --git a/tests/resources/audit/test_event_types.py b/tests/resources/audit/test_event_types.py
new file mode 100644
index 00000000..1bb5bc1d
--- /dev/null
+++ b/tests/resources/audit/test_event_types.py
@@ -0,0 +1,23 @@
+import pytest
+
+from mpt_api_client.resources.audit.event_types import AsyncEventTypesService, EventTypesService
+
+
+@pytest.fixture
+def event_types_service(http_client):
+    return EventTypesService(http_client=http_client)
+
+
+@pytest.fixture
+def async_event_types_service(async_http_client):
+    return AsyncEventTypesService(http_client=async_http_client)
+
+
+@pytest.mark.parametrize("method", ["get", "update"])
+def test_mixins_present(event_types_service, method):
+    assert hasattr(event_types_service, method)
+
+
+@pytest.mark.parametrize("method", ["get", "update"])
+def test_async_mixins_present(async_event_types_service, method):
+    assert hasattr(async_event_types_service, method)
diff --git a/tests/test_mpt.py b/tests/test_mpt.py
index 096766c3..bf39c59c 100644
--- a/tests/test_mpt.py
+++ b/tests/test_mpt.py
@@ -2,7 +2,16 @@
 
 from mpt_api_client.http import AsyncHTTPClient, HTTPClient
 from mpt_api_client.mpt_client import AsyncMPTClient, MPTClient
-from mpt_api_client.resources import AsyncCatalog, AsyncCommerce, Catalog, Commerce
+from mpt_api_client.resources import (
+    AsyncAudit,
+    AsyncBilling,
+    AsyncCatalog,
+    AsyncCommerce,
+    Audit,
+    Billing,
+    Catalog,
+    Commerce,
+)
 from tests.conftest import API_TOKEN, API_URL
 
 
@@ -10,10 +19,14 @@ def test_mpt_client() -> None:
     mpt = MPTClient.from_config(base_url=API_URL, api_token=API_TOKEN)
     commerce = mpt.commerce
     catalog = mpt.catalog
+    audit = mpt.audit
+    billing = mpt.billing
 
     assert isinstance(mpt, MPTClient)
     assert isinstance(commerce, Commerce)
     assert isinstance(catalog, Catalog)
+    assert isinstance(audit, Audit)
+    assert isinstance(billing, Billing)
 
 
 def test_mpt_client_env(monkeypatch: pytest.MonkeyPatch) -> None:
@@ -30,10 +43,14 @@ def test_async_mpt_client() -> None:
     mpt = AsyncMPTClient.from_config(base_url=API_URL, api_token=API_TOKEN)
     commerce = mpt.commerce
     catalog = mpt.catalog
+    audit = mpt.audit
+    billing = mpt.billing
 
     assert isinstance(mpt, AsyncMPTClient)
     assert isinstance(commerce, AsyncCommerce)
     assert isinstance(catalog, AsyncCatalog)
+    assert isinstance(audit, AsyncAudit)
+    assert isinstance(billing, AsyncBilling)
 
 
 def test_async_mpt_client_env(monkeypatch: pytest.MonkeyPatch) -> None: