diff --git a/cuenca/__init__.py b/cuenca/__init__.py
index 97bfdc5f..32bce1f4 100644
--- a/cuenca/__init__.py
+++ b/cuenca/__init__.py
@@ -44,8 +44,6 @@
     'get_balance',
 ]
 
-from typing import cast
-
 from . import http
 from .resources import (
     Account,
@@ -96,5 +94,5 @@
 
 
 def get_balance(session: http.Session = session) -> int:
-    balance_entry = cast('BalanceEntry', BalanceEntry.first(session=session))
+    balance_entry = BalanceEntry.first(session=session)
     return balance_entry.rolling_balance if balance_entry else 0
diff --git a/cuenca/resources/base.py b/cuenca/resources/base.py
index 94745986..1d300fd2 100644
--- a/cuenca/resources/base.py
+++ b/cuenca/resources/base.py
@@ -2,7 +2,7 @@
 import datetime as dt
 import json
 from io import BytesIO
-from typing import ClassVar, Generator, Optional, Type, TypeVar, cast
+from typing import Any, ClassVar, Generator, Optional, Type, TypeVar, cast
 from urllib.parse import urlencode
 
 from cuenca_validations.types import (
@@ -35,7 +35,10 @@ def to_dict(self):
 class Retrievable(Resource):
     @classmethod
     def retrieve(
-        cls: Type[R_co], id: str, *, session: Session = global_session
+        cls: Type[R_co],
+        id: str,
+        *,
+        session: Session = global_session,
     ) -> R_co:
         resp = session.get(f'/{cls._resource}/{id}')
         return cls(**resp)
@@ -49,7 +52,10 @@ def refresh(self, *, session: Session = global_session) -> None:
 class Creatable(Resource):
     @classmethod
     def _create(
-        cls: Type[R_co], *, session: Session = global_session, **data
+        cls: Type[R_co],
+        *,
+        session: Session = global_session,
+        **data: Any,
     ) -> R_co:
         resp = session.post(cls._resource, data)
         return cls(**resp)
@@ -61,7 +67,11 @@ class Updateable(Resource):
 
     @classmethod
     def _update(
-        cls: Type[R_co], id: str, *, session: Session = global_session, **data
+        cls: Type[R_co],
+        id: str,
+        *,
+        session: Session = global_session,
+        **data: Any,
     ) -> R_co:
         resp = session.patch(f'/{cls._resource}/{id}', data)
         return cls(**resp)
@@ -72,7 +82,11 @@ class Deactivable(Resource):
 
     @classmethod
     def deactivate(
-        cls: Type[R_co], id: str, *, session: Session = global_session, **data
+        cls: Type[R_co],
+        id: str,
+        *,
+        session: Session = global_session,
+        **data: Any,
     ) -> R_co:
         resp = session.delete(f'/{cls._resource}/{id}', data)
         return cls(**resp)
@@ -115,7 +129,7 @@ def _upload(
         user_id: str,
         *,
         session: Session = global_session,
-        **data,
+        **data: Any,
     ) -> R_co:
         encoded_file = base64.b64encode(file)
         resp = session.request(
@@ -137,7 +151,10 @@ class Queryable(Resource):
 
     @classmethod
     def one(
-        cls: Type[R_co], *, session: Session = global_session, **query_params
+        cls: Type[R_co],
+        *,
+        session: Session = global_session,
+        **query_params: Any,
     ) -> R_co:
         q = cast(Queryable, cls)._query_params(limit=2, **query_params)
         resp = session.get(cls._resource, q.dict())
@@ -151,7 +168,10 @@ def one(
 
     @classmethod
     def first(
-        cls: Type[R_co], *, session: Session = global_session, **query_params
+        cls: Type[R_co],
+        *,
+        session: Session = global_session,
+        **query_params: Any,
     ) -> Optional[R_co]:
         q = cast(Queryable, cls)._query_params(limit=1, **query_params)
         resp = session.get(cls._resource, q.dict())
@@ -165,7 +185,10 @@ def first(
 
     @classmethod
     def count(
-        cls: Type[R_co], *, session: Session = global_session, **query_params
+        cls: Type[R_co],
+        *,
+        session: Session = global_session,
+        **query_params: Any,
     ) -> int:
         q = cast(Queryable, cls)._query_params(count=True, **query_params)
         resp = session.get(cls._resource, q.dict())
@@ -173,7 +196,10 @@ def count(
 
     @classmethod
     def all(
-        cls: Type[R_co], *, session: Session = global_session, **query_params
+        cls: Type[R_co],
+        *,
+        session: Session = global_session,
+        **query_params: Any,
     ) -> Generator[R_co, None, None]:
         session = session or global_session
         q = cast(Queryable, cls)._query_params(**query_params)
diff --git a/cuenca/resources/card_validations.py b/cuenca/resources/card_validations.py
index 858febd9..0bcd3770 100644
--- a/cuenca/resources/card_validations.py
+++ b/cuenca/resources/card_validations.py
@@ -51,9 +51,7 @@ def create(
             pin_block=pin_block,
             pin_attempts_exceeded=pin_attempts_exceeded,
         )
-        return cast(
-            'CardValidation', cls._create(session=session, **req.dict())
-        )
+        return cls._create(session=session, **req.dict())
 
     @property
     def card(self) -> Card:
diff --git a/cuenca/resources/endpoints.py b/cuenca/resources/endpoints.py
index 51776abe..79aa4750 100644
--- a/cuenca/resources/endpoints.py
+++ b/cuenca/resources/endpoints.py
@@ -89,6 +89,7 @@ def update(
         like url and is_active.
         :param endpoint_id: existing endpoint_id
         :param url
+        :param events: Optional list of enabled events to update
         :param is_enable
         :param session
         :return: Updated endpoint object
diff --git a/cuenca/resources/otps.py b/cuenca/resources/otps.py
index 03450c1b..b3534131 100644
--- a/cuenca/resources/otps.py
+++ b/cuenca/resources/otps.py
@@ -1,4 +1,4 @@
-from typing import ClassVar, cast
+from typing import ClassVar
 
 from ..http import Session, session as global_session
 from .base import Creatable
@@ -21,4 +21,4 @@ def create(cls, session: Session = global_session) -> 'Otp':
         """
         Use this method to create a OTP seed
         """
-        return cast('Otp', cls._create(session=session))
+        return cls._create(session=session)
diff --git a/cuenca/resources/savings.py b/cuenca/resources/savings.py
index 97860d51..d5722ea9 100644
--- a/cuenca/resources/savings.py
+++ b/cuenca/resources/savings.py
@@ -27,7 +27,7 @@ def create(
         category: SavingCategory,
         goal_amount: Optional[int] = None,
         goal_date: Optional[dt.datetime] = None,
-    ):
+    ) -> 'Saving':
         request = SavingRequest(
             name=name,
             category=category,
diff --git a/cuenca/resources/transfers.py b/cuenca/resources/transfers.py
index 651162a4..6cdf5fde 100644
--- a/cuenca/resources/transfers.py
+++ b/cuenca/resources/transfers.py
@@ -80,7 +80,7 @@ def create_many(cls, requests: List[TransferRequest]) -> DictStrAny:
             except (CuencaException, HTTPError) as e:
                 transfers['errors'].append(dict(request=req, error=e))
             else:
-                transfers['submitted'].append(cast('Transfer', transfer))
+                transfers['submitted'].append(transfer)
         return transfers
 
     @staticmethod
diff --git a/cuenca/resources/users.py b/cuenca/resources/users.py
index e68303eb..ffed5c3a 100644
--- a/cuenca/resources/users.py
+++ b/cuenca/resources/users.py
@@ -157,7 +157,7 @@ def update(
         curp_document: Optional[HttpUrl] = None,
         *,
         session: Session = global_session,
-    ):
+    ) -> 'User':
         request = UserUpdateRequest(
             phone_number=phone_number,
             email_address=email_address,
diff --git a/cuenca/resources/wallet_transactions.py b/cuenca/resources/wallet_transactions.py
index 773c46d2..5204383d 100644
--- a/cuenca/resources/wallet_transactions.py
+++ b/cuenca/resources/wallet_transactions.py
@@ -29,7 +29,7 @@ def create(
         wallet_uri: str,
         transaction_type: WalletTransactionType,
         amount: int,
-    ):
+    ) -> 'WalletTransaction':
         request = WalletTransactionRequest(
             wallet_uri=wallet_uri,
             transaction_type=transaction_type,