diff --git a/pyoverkiz/_case.py b/pyoverkiz/_case.py
index f87448b7..2170989f 100644
--- a/pyoverkiz/_case.py
+++ b/pyoverkiz/_case.py
@@ -4,8 +4,10 @@
 
 import functools
 import re
-from collections.abc import Callable
-from typing import Any
+from typing import TYPE_CHECKING, Any
+
+if TYPE_CHECKING:
+    from collections.abc import Callable
 
 _CAMEL_RE = re.compile(r"([A-Z]+)([A-Z][a-z])|([a-z\d])([A-Z])")
 
diff --git a/pyoverkiz/action_queue.py b/pyoverkiz/action_queue.py
index 104809a8..2b5e3523 100644
--- a/pyoverkiz/action_queue.py
+++ b/pyoverkiz/action_queue.py
@@ -4,13 +4,14 @@
 
 import asyncio
 import contextlib
-from collections.abc import Callable, Coroutine, Generator
 from dataclasses import dataclass
 from typing import TYPE_CHECKING, Any
 
 from pyoverkiz.models import Action
 
 if TYPE_CHECKING:
+    from collections.abc import Callable, Coroutine, Generator
+
     from pyoverkiz.enums import ExecutionMode
 
 
diff --git a/pyoverkiz/auth/base.py b/pyoverkiz/auth/base.py
index 6131c3bc..19bac2ba 100644
--- a/pyoverkiz/auth/base.py
+++ b/pyoverkiz/auth/base.py
@@ -3,9 +3,11 @@
 from __future__ import annotations
 
 import datetime
-from collections.abc import Mapping
 from dataclasses import dataclass, field
-from typing import Any, Protocol
+from typing import TYPE_CHECKING, Any, Protocol
+
+if TYPE_CHECKING:
+    from collections.abc import Mapping
 
 
 @dataclass(slots=True)
diff --git a/pyoverkiz/auth/factory.py b/pyoverkiz/auth/factory.py
index 4ee91425..2c2fda4e 100644
--- a/pyoverkiz/auth/factory.py
+++ b/pyoverkiz/auth/factory.py
@@ -2,9 +2,7 @@
 
 from __future__ import annotations
 
-import ssl
-
-from aiohttp import ClientSession
+from typing import TYPE_CHECKING
 
 from pyoverkiz.auth.credentials import (
     Credentials,
@@ -24,7 +22,13 @@
     SomfyAuthStrategy,
 )
 from pyoverkiz.enums import APIType, Server
-from pyoverkiz.models import ServerConfig
+
+if TYPE_CHECKING:
+    from ssl import SSLContext
+
+    from aiohttp import ClientSession
+
+    from pyoverkiz.models import ServerConfig
 
 
 def build_auth_strategy(
@@ -32,7 +36,7 @@ def build_auth_strategy(
     server_config: ServerConfig,
     credentials: Credentials,
     session: ClientSession,
-    ssl_context: ssl.SSLContext | bool,
+    ssl_context: SSLContext | bool,
 ) -> AuthStrategy:
     """Build the correct auth strategy for the given server and credentials."""
     server: Server | None = server_config.server
diff --git a/pyoverkiz/auth/strategies.py b/pyoverkiz/auth/strategies.py
index b5a0e3c7..d7d85d87 100644
--- a/pyoverkiz/auth/strategies.py
+++ b/pyoverkiz/auth/strategies.py
@@ -6,23 +6,26 @@
 import base64
 import binascii
 import json
-import ssl
-from collections.abc import Mapping
 from http import HTTPStatus
 from typing import TYPE_CHECKING, Any, cast
 
 if TYPE_CHECKING:
+    from collections.abc import Mapping
+    from ssl import SSLContext
+
     from botocore.client import BaseClient
 
+    from pyoverkiz.auth.credentials import (
+        LocalTokenCredentials,
+        RexelOAuthCodeCredentials,
+        TokenCredentials,
+        UsernamePasswordCredentials,
+    )
+    from pyoverkiz.models import ServerConfig
+
 from aiohttp import ClientSession, FormData
 
 from pyoverkiz.auth.base import AuthContext, AuthStrategy
-from pyoverkiz.auth.credentials import (
-    LocalTokenCredentials,
-    RexelOAuthCodeCredentials,
-    TokenCredentials,
-    UsernamePasswordCredentials,
-)
 from pyoverkiz.const import (
     COZYTOUCH_ATLANTIC_API,
     COZYTOUCH_CLIENT_ID,
@@ -48,7 +51,6 @@
     SomfyBadCredentialsError,
     SomfyServiceError,
 )
-from pyoverkiz.models import ServerConfig
 
 MIN_JWT_SEGMENTS = 2
 
@@ -60,7 +62,7 @@ def __init__(
         self,
         session: ClientSession,
         server: ServerConfig,
-        ssl_context: ssl.SSLContext | bool,
+        ssl_context: SSLContext | bool,
     ) -> None:
         """Store shared auth context for Overkiz API interactions."""
         self.session = session
@@ -92,7 +94,7 @@ def __init__(
         credentials: UsernamePasswordCredentials,
         session: ClientSession,
         server: ServerConfig,
-        ssl_context: ssl.SSLContext | bool,
+        ssl_context: SSLContext | bool,
     ) -> None:
         """Create a session-login strategy bound to the given credentials."""
         super().__init__(session, server, ssl_context)
@@ -135,7 +137,7 @@ def __init__(
         credentials: UsernamePasswordCredentials,
         session: ClientSession,
         server: ServerConfig,
-        ssl_context: ssl.SSLContext | bool,
+        ssl_context: SSLContext | bool,
     ) -> None:
         """Create a Somfy OAuth2 strategy with a fresh auth context."""
         super().__init__(session, server, ssl_context)
@@ -298,7 +300,7 @@ def __init__(
         credentials: LocalTokenCredentials,
         session: ClientSession,
         server: ServerConfig,
-        ssl_context: ssl.SSLContext | bool,
+        ssl_context: SSLContext | bool,
     ) -> None:
         """Create a local-token strategy bound to the given credentials."""
         super().__init__(session, server, ssl_context)
@@ -322,7 +324,7 @@ def __init__(
         credentials: RexelOAuthCodeCredentials,
         session: ClientSession,
         server: ServerConfig,
-        ssl_context: ssl.SSLContext | bool,
+        ssl_context: SSLContext | bool,
     ) -> None:
         """Create a Rexel OAuth2 strategy with a fresh auth context."""
         super().__init__(session, server, ssl_context)
@@ -406,7 +408,7 @@ def __init__(
         credentials: TokenCredentials,
         session: ClientSession,
         server: ServerConfig,
-        ssl_context: ssl.SSLContext | bool,
+        ssl_context: SSLContext | bool,
     ) -> None:
         """Create a bearer-token strategy bound to the given credentials."""
         super().__init__(session, server, ssl_context)
diff --git a/pyoverkiz/client.py b/pyoverkiz/client.py
index 3020daf2..39d99463 100644
--- a/pyoverkiz/client.py
+++ b/pyoverkiz/client.py
@@ -7,8 +7,7 @@
 import urllib.parse
 from http import HTTPStatus
 from pathlib import Path
-from types import TracebackType
-from typing import Any, Self, cast
+from typing import TYPE_CHECKING, Any, Self, cast
 
 import backoff
 from aiohttp import (
@@ -17,7 +16,6 @@
     ClientSession,
     ServerDisconnectedError,
 )
-from backoff.types import Details
 
 from pyoverkiz._case import decamelize
 from pyoverkiz.action_queue import ActionQueue, ActionQueueSettings
@@ -56,7 +54,13 @@
 from pyoverkiz.obfuscate import obfuscate_sensitive_data
 from pyoverkiz.response_handler import check_response
 from pyoverkiz.serializers import prepare_payload
-from pyoverkiz.types import JSON
+
+if TYPE_CHECKING:
+    from types import TracebackType
+
+    from backoff.types import Details
+
+    from pyoverkiz.types import JSON
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/pyoverkiz/enums/base.py b/pyoverkiz/enums/base.py
index 83c075bc..3d2fc01c 100644
--- a/pyoverkiz/enums/base.py
+++ b/pyoverkiz/enums/base.py
@@ -36,4 +36,4 @@ def _missing_(cls, value: object) -> Self:  # type: ignore[override]
         message = cls.__missing_message__
         logging.getLogger(cls.__module__).warning(message, value, cls)
         # Type checker cannot infer UNKNOWN exists on Self, but all subclasses define it
-        return cast(Self, cls.UNKNOWN)  # type: ignore[attr-defined]
+        return cast(Self, cls.UNKNOWN)  # type: ignore[attr-defined]  # ty: ignore[unresolved-attribute]
diff --git a/pyoverkiz/models.py b/pyoverkiz/models.py
index 0d9a38be..0d3d7f1a 100644
--- a/pyoverkiz/models.py
+++ b/pyoverkiz/models.py
@@ -4,8 +4,7 @@
 
 import json
 import re
-from collections.abc import Iterator
-from typing import Any, cast
+from typing import TYPE_CHECKING, Any, cast
 
 from attr import define, field
 
@@ -24,12 +23,15 @@
     UpdateBoxStatus,
     UpdateCriticityLevel,
 )
-from pyoverkiz.enums.command import OverkizCommand, OverkizCommandParam
+from pyoverkiz.enums.command import OverkizCommand, OverkizCommandParam  # noqa: TC001
 from pyoverkiz.enums.protocol import Protocol
-from pyoverkiz.enums.server import APIType, Server
+from pyoverkiz.enums.server import APIType, Server  # noqa: TC001
 from pyoverkiz.obfuscate import obfuscate_email, obfuscate_id, obfuscate_string
 from pyoverkiz.types import DATA_TYPE_TO_PYTHON, StateType
 
+if TYPE_CHECKING:
+    from collections.abc import Iterator
+
 # ---------------------------------------------------------------------------
 # State & command primitives
 # ---------------------------------------------------------------------------
diff --git a/pyoverkiz/obfuscate.py b/pyoverkiz/obfuscate.py
index ca26abd6..0831bad8 100644
--- a/pyoverkiz/obfuscate.py
+++ b/pyoverkiz/obfuscate.py
@@ -3,9 +3,10 @@
 from __future__ import annotations
 
 import re
-from typing import Any
+from typing import TYPE_CHECKING, Any
 
-from pyoverkiz.types import JSON
+if TYPE_CHECKING:
+    from pyoverkiz.types import JSON
 
 
 def obfuscate_id(id: str | None) -> str:
diff --git a/pyoverkiz/response_handler.py b/pyoverkiz/response_handler.py
index dbeb918c..66ea0952 100644
--- a/pyoverkiz/response_handler.py
+++ b/pyoverkiz/response_handler.py
@@ -4,8 +4,7 @@
 
 from http import HTTPStatus
 from json import JSONDecodeError
-
-from aiohttp import ClientResponse
+from typing import TYPE_CHECKING
 
 from pyoverkiz.exceptions import (
     AccessDeniedToGatewayError,
@@ -40,6 +39,9 @@
     UnsupportedOperationError,
 )
 
+if TYPE_CHECKING:
+    from aiohttp import ClientResponse
+
 # Primary dispatch: (errorCode, message_substring) -> error class.
 # Checked in order; first match wins. Use errorCode as the primary key to
 # reduce brittleness across cloud vs. local API variants.
diff --git a/pyoverkiz/types.py b/pyoverkiz/types.py
index 167f5951..fdd47498 100644
--- a/pyoverkiz/types.py
+++ b/pyoverkiz/types.py
@@ -3,11 +3,13 @@
 from __future__ import annotations
 
 import json
-from collections.abc import Callable
-from typing import Any
+from typing import TYPE_CHECKING, Any
 
 from pyoverkiz.enums import DataType
 
+if TYPE_CHECKING:
+    from collections.abc import Callable
+
 StateType = str | int | float | bool | dict[str, Any] | list[Any] | None
 
 
diff --git a/pyproject.toml b/pyproject.toml
index bcc26ad5..24bfaed4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -125,6 +125,8 @@ select = [
     "A",
     # pylint
     "PL",
+    # flake8-type-checking
+    "TC",
 ]
 ignore = [
     "E501",    # Line too long
@@ -133,6 +135,7 @@ ignore = [
     "PLR0913", # Too many arguments — expected for API model constructors
     "PLC0415", # Import not at top level — intentional lazy imports
     "PLR0911", # Too many return statements — acceptable in factory functions
+    "TC006",   # Quoting cast() types hurts IDE autocomplete for no real benefit
 ]
 
 [tool.ruff.lint.per-file-ignores]
diff --git a/utils/generate_enums.py b/utils/generate_enums.py
index 3b88d9be..3e74b0e4 100644
--- a/utils/generate_enums.py
+++ b/utils/generate_enums.py
@@ -12,13 +12,15 @@
 import re
 import subprocess
 from pathlib import Path
-from typing import cast
+from typing import TYPE_CHECKING
 
 from pyoverkiz.auth.credentials import UsernamePasswordCredentials
 from pyoverkiz.client import OverkizClient
 from pyoverkiz.enums import Server
 from pyoverkiz.exceptions import OverkizError
-from pyoverkiz.models import UIProfileDefinition, ValuePrototype
+
+if TYPE_CHECKING:
+    from pyoverkiz.models import UIProfileDefinition, ValuePrototype
 
 # Hardcoded protocols that may not be available on all servers
 # Each tuple contains: name, prefix, id, label
@@ -129,8 +131,8 @@ async def generate_ui_enums(server: Server) -> None:
     ) as client:
         await client.login()
 
-        ui_classes = cast(list[str], await client.get_reference_ui_classes())
-        ui_widgets = cast(list[str], await client.get_reference_ui_widgets())
+        ui_classes = await client.get_reference_ui_classes()
+        ui_widgets = await client.get_reference_ui_widgets()
 
         # Convert camelCase to SCREAMING_SNAKE_CASE for enum names
         def to_enum_name(value: str) -> str:
@@ -210,7 +212,7 @@ def to_enum_name(value: str) -> str:
         lines.append("")  # End with newline
 
         # Fetch and add UI classifiers
-        ui_classifiers = cast(list[str], await client.get_reference_ui_classifiers())
+        ui_classifiers = await client.get_reference_ui_classifiers()
 
         lines.append("")
         lines.append("@unique")