diff --git a/pyproject.toml b/pyproject.toml
index c0b8250..617d303 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -98,7 +98,6 @@ extend-safe-fixes = [
     "D415", # docstrings should end with a period, question mark, or exclamation point
 ]
 ignore = [
-    "ANN401",
     "ARG002",
     "B006",
     "B904",
diff --git a/src/multisafepay/api/base/response/api_response.py b/src/multisafepay/api/base/response/api_response.py
index 2980c15..8b30a4f 100644
--- a/src/multisafepay/api/base/response/api_response.py
+++ b/src/multisafepay/api/base/response/api_response.py
@@ -6,7 +6,7 @@
 # See the DISCLAIMER.md file for disclaimer details.
 
 
-from typing import Any, Optional
+from typing import Optional, Union
 
 from multisafepay.api.base.listings.pager import Pager
 from multisafepay.model.extra_model import ExtraModel
@@ -65,7 +65,7 @@ def with_json(
             raw=json_data.__str__(),
         )
 
-    def get_body_data(self: "ApiResponse") -> Optional[Any]:
+    def get_body_data(self: "ApiResponse") -> Optional[Union[dict, list]]:
         """
         Get the data from the body of the response.
 
diff --git a/src/multisafepay/api/base/response/custom_api_response.py b/src/multisafepay/api/base/response/custom_api_response.py
index 0a9398d..7a0bad6 100644
--- a/src/multisafepay/api/base/response/custom_api_response.py
+++ b/src/multisafepay/api/base/response/custom_api_response.py
@@ -5,7 +5,7 @@
 
 # See the DISCLAIMER.md file for disclaimer details.
 
-from typing import Any, Dict, Optional
+from typing import Any, Dict, Optional, Union
 
 from multisafepay.api.base.response.api_response import ApiResponse
 
@@ -20,11 +20,11 @@ class CustomApiResponse(ApiResponse):
 
     """
 
-    data: Optional[Any]
+    data: Optional[Union[dict, list]]
 
     def __init__(
         self: "CustomApiResponse",
-        data: Optional[Any],
+        data: Optional[Union[dict, list]],
         **kwargs: Dict[str, Any],
     ) -> None:
         """
@@ -41,7 +41,7 @@ def __init__(
         for key, value in kwargs.items():
             setattr(self, key, value)
 
-    def get_data(self: "CustomApiResponse") -> Optional[Any]:
+    def get_data(self: "CustomApiResponse") -> Optional[Union[dict, list]]:
         """
         Get the data contained in the response.
 
diff --git a/src/multisafepay/exception/api.py b/src/multisafepay/exception/api.py
index 34706df..b4b799a 100644
--- a/src/multisafepay/exception/api.py
+++ b/src/multisafepay/exception/api.py
@@ -7,7 +7,7 @@
 
 
 import json
-from typing import Any
+from typing import Dict, List, Optional, Union
 
 
 class ApiException(Exception):
@@ -115,7 +115,10 @@ def get_context_as_array(self: "ApiException") -> list:
             lines.append(f"{context_name}: {debug_value}")
         return lines
 
-    def get_context_value(self: "ApiException", name: str) -> Any:
+    def get_context_value(
+        self: "ApiException",
+        name: str,
+    ) -> Optional[Union[str, int, float, bool, Dict, List]]:
         """
         Get a specific context value by name.
 
@@ -125,7 +128,8 @@ def get_context_value(self: "ApiException", name: str) -> Any:
 
         Returns
         -------
-        The value associated with the given name, or None if the name is not found.
+        Optional[Union[str, int, float, bool, Dict, List]]: The value associated with the given name,
+            or None if the name is not found.
 
         """
         return self.context.get(name)
diff --git a/src/multisafepay/util/dict_utils.py b/src/multisafepay/util/dict_utils.py
index 2d4092c..555ec59 100644
--- a/src/multisafepay/util/dict_utils.py
+++ b/src/multisafepay/util/dict_utils.py
@@ -5,7 +5,7 @@
 
 # See the DISCLAIMER.md file for disclaimer details.
 
-from typing import Any, Optional
+from typing import Optional
 
 
 def merge_recursive(dict1: dict, dict2: dict) -> dict:
@@ -66,7 +66,7 @@ def remove_null_recursive(input_data: dict) -> dict:
 
     """
 
-    def process_value(value: Any) -> Optional[Any]:
+    def process_value(value: object) -> Optional[object]:
         if isinstance(value, dict):
             processed_dict = remove_null_recursive(value)
             return processed_dict if processed_dict else None
@@ -85,7 +85,7 @@ def process_value(value: Any) -> Optional[Any]:
     }
 
 
-def dict_empty(value: Any) -> bool:
+def dict_empty(value: object) -> bool:
     """
     Check if the given value is an empty dictionary.
 
diff --git a/src/multisafepay/util/total_amount.py b/src/multisafepay/util/total_amount.py
index e8f8edd..09286aa 100644
--- a/src/multisafepay/util/total_amount.py
+++ b/src/multisafepay/util/total_amount.py
@@ -7,7 +7,6 @@
 
 
 import json
-from typing import Any
 
 from multisafepay.exception.invalid_total_amount import (
     InvalidTotalAmountException,
@@ -74,7 +73,7 @@ def __calculate_totals(data: dict) -> float:
 def __get_tax_rate_by_item(
     item: dict,
     data: dict,
-) -> Any:
+) -> object:
     """
     Get the tax rate for a specific item in the shopping cart.
 
@@ -85,7 +84,7 @@ def __get_tax_rate_by_item(
 
     Returns
     -------
-    int | List[int | Any] | Any: The tax rate for the item, or 0 if no tax rate is found.
+    object: The tax rate for the item, or 0 if no tax rate is found.
 
     """
     if "tax_table_selector" not in item or not item["tax_table_selector"]:
diff --git a/tests/multisafepay/integration/api/base/listings/test_integration_listing_pager.py b/tests/multisafepay/integration/api/base/listings/test_integration_listing_pager.py
index 60304ed..00d4caf 100644
--- a/tests/multisafepay/integration/api/base/listings/test_integration_listing_pager.py
+++ b/tests/multisafepay/integration/api/base/listings/test_integration_listing_pager.py
@@ -6,15 +6,13 @@
 # See the DISCLAIMER.md file for disclaimer details.
 
 
-from typing import Any
-
 from multisafepay.api.base.listings.listing_pager import ListingPager
 from multisafepay.api.base.listings.pager import Pager
 from multisafepay.api.base.listings.cursor import Cursor
 
 
 class MockItem:
-    def __init__(self: "MockItem", value: Any) -> None:
+    def __init__(self: "MockItem", value: object) -> None:
         """
         Initialize a MockItem with a given value.
 
diff --git a/tests/multisafepay/unit/api/base/listings/test_unit_listing.py b/tests/multisafepay/unit/api/base/listings/test_unit_listing.py
index ad6f7d5..8461120 100644
--- a/tests/multisafepay/unit/api/base/listings/test_unit_listing.py
+++ b/tests/multisafepay/unit/api/base/listings/test_unit_listing.py
@@ -5,13 +5,12 @@
 
 # See the DISCLAIMER.md file for disclaimer details.
 
-from typing import Any
 
 from multisafepay.api.base.listings.listing import Listing
 
 
 class MockItem:
-    def __init__(self: "MockItem", value: Any) -> None:
+    def __init__(self: "MockItem", value: object) -> None:
         self.value = value
 
 
diff --git a/tests/multisafepay/unit/api/base/listings/test_unit_listing_pager.py b/tests/multisafepay/unit/api/base/listings/test_unit_listing_pager.py
index 844c54d..28a0877 100644
--- a/tests/multisafepay/unit/api/base/listings/test_unit_listing_pager.py
+++ b/tests/multisafepay/unit/api/base/listings/test_unit_listing_pager.py
@@ -5,13 +5,12 @@
 
 # See the DISCLAIMER.md file for disclaimer details.
 
-from typing import Any
 
 from multisafepay.api.base.listings.listing_pager import ListingPager
 
 
 class MockItem:
-    def __init__(self: "MockItem", value: Any) -> None:
+    def __init__(self: "MockItem", value: object) -> None:
         """
         Initialize a MockItem with a given value.