diff --git a/aws_lambda_powertools/utilities/feature_flags/feature_flags.py b/aws_lambda_powertools/utilities/feature_flags/feature_flags.py
index 6fb8d51753a..d62dbfc625f 100644
--- a/aws_lambda_powertools/utilities/feature_flags/feature_flags.py
+++ b/aws_lambda_powertools/utilities/feature_flags/feature_flags.py
@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 import logging
-from typing import TYPE_CHECKING, Any, Callable, List, cast
+from typing import TYPE_CHECKING, Any, cast
 
 from aws_lambda_powertools.utilities.feature_flags import schema
 from aws_lambda_powertools.utilities.feature_flags.comparators import (
@@ -16,6 +16,8 @@
 from aws_lambda_powertools.utilities.feature_flags.exceptions import ConfigurationStoreError
 
 if TYPE_CHECKING:
+    from collections.abc import Callable
+
     from aws_lambda_powertools.logging import Logger
     from aws_lambda_powertools.utilities.feature_flags.base import StoreProvider
     from aws_lambda_powertools.utilities.feature_flags.types import JSONType, P, T
@@ -103,7 +105,7 @@ def _evaluate_conditions(
     ) -> bool:
         """Evaluates whether context matches conditions, return False otherwise"""
         rule_match_value = rule.get(schema.RULE_MATCH_VALUE)
-        conditions = cast(List[dict], rule.get(schema.CONDITIONS_KEY))
+        conditions = cast(list[dict], rule.get(schema.CONDITIONS_KEY))
 
         if not conditions:
             self.logger.debug(
diff --git a/tests/functional/feature_flags/_boto3/test_feature_flags.py b/tests/functional/feature_flags/_boto3/test_feature_flags.py
index 08035f2989f..0a41f04c1f1 100644
--- a/tests/functional/feature_flags/_boto3/test_feature_flags.py
+++ b/tests/functional/feature_flags/_boto3/test_feature_flags.py
@@ -1,6 +1,7 @@
+from __future__ import annotations
+
 from io import BytesIO
 from json import dumps
-from typing import Dict, List, Optional
 
 import boto3
 import pytest
@@ -37,10 +38,10 @@ def config():
 
 def init_feature_flags(
     mocker,
-    mock_schema: Dict,
+    mock_schema: dict,
     config: Config,
     envelope: str = "",
-    jmespath_options: Optional[Dict] = None,
+    jmespath_options: dict | None = None,
 ) -> FeatureFlags:
     environment = "test_env"
     application = "test_app"
@@ -689,7 +690,7 @@ def test_multiple_features_enabled(mocker, config):
         },
     }
     feature_flags = init_feature_flags(mocker, mocked_app_config_schema, config)
-    enabled_list: List[str] = feature_flags.get_enabled_features(context={"tenant_id": "6", "username": "a"})
+    enabled_list: list[str] = feature_flags.get_enabled_features(context={"tenant_id": "6", "username": "a"})
     assert enabled_list == expected_value
 
 
@@ -1430,7 +1431,7 @@ def test_get_all_enabled_features_boolean_and_non_boolean(mocker, config):
     }
 
     feature_flags = init_feature_flags(mocker, mocked_app_config_schema, config)
-    enabled_list: List[str] = feature_flags.get_enabled_features(context={"tenant_id": "6", "username": "a"})
+    enabled_list: list[str] = feature_flags.get_enabled_features(context={"tenant_id": "6", "username": "a"})
     assert enabled_list == expected_value
 
 
@@ -1442,7 +1443,7 @@ def test_get_all_enabled_features_non_boolean_truthy_defaults(mocker, config):
     }
 
     feature_flags = init_feature_flags(mocker, mocked_app_config_schema, config)
-    enabled_list: List[str] = feature_flags.get_enabled_features(context={"tenant_id": "6", "username": "a"})
+    enabled_list: list[str] = feature_flags.get_enabled_features(context={"tenant_id": "6", "username": "a"})
     assert enabled_list == expected_value
 
 
diff --git a/tests/functional/feature_flags/_boto3/test_schema_validation.py b/tests/functional/feature_flags/_boto3/test_schema_validation.py
index 45b4c7dbeda..23c06bf3ff2 100644
--- a/tests/functional/feature_flags/_boto3/test_schema_validation.py
+++ b/tests/functional/feature_flags/_boto3/test_schema_validation.py
@@ -1,8 +1,9 @@
+from __future__ import annotations
+
 import re
 
 import pytest
 
-from aws_lambda_powertools.logging.logger import Logger  # noqa: F401
 from aws_lambda_powertools.utilities.feature_flags.exceptions import (
     SchemaValidationError,
 )
diff --git a/tests/functional/feature_flags/_boto3/test_time_based_actions.py b/tests/functional/feature_flags/_boto3/test_time_based_actions.py
index 872f2ac2862..0e84c6ffc3f 100644
--- a/tests/functional/feature_flags/_boto3/test_time_based_actions.py
+++ b/tests/functional/feature_flags/_boto3/test_time_based_actions.py
@@ -1,5 +1,7 @@
+from __future__ import annotations
+
 import datetime
-from typing import Any, Dict, Optional, Tuple
+from typing import Any
 
 from botocore.config import Config
 from dateutil.tz import gettz
@@ -23,9 +25,9 @@
 
 def evaluate_mocked_schema(
     mocker,
-    rules: Dict[str, Any],
-    mocked_time: Tuple[int, int, int, int, int, int, datetime.tzinfo],  # year, month, day, hour, minute, second
-    context: Optional[Dict[str, Any]] = None,
+    rules: dict[str, Any],
+    mocked_time: tuple[int, int, int, int, int, int, datetime.tzinfo],  # year, month, day, hour, minute, second
+    context: dict[str, Any] | None = None,
 ) -> JSONType:
     """
     This helper does the following:
@@ -510,7 +512,7 @@ def test_time_based_multiple_conditions_utc_days_range_and_certain_hours_rule_ma
 
 
 def test_time_based_multiple_conditions_utc_days_range_and_certain_hours_no_rule_match(mocker):
-    def evaluate(mocked_time: Tuple[int, int, int, int, int, int, datetime.tzinfo]):
+    def evaluate(mocked_time: tuple[int, int, int, int, int, int, datetime.tzinfo]):
         evaluate_mocked_schema(
             mocker=mocker,
             rules={