diff --git a/matter_server/client/client.py b/matter_server/client/client.py
index dd7796cc..abba334f 100644
--- a/matter_server/client/client.py
+++ b/matter_server/client/client.py
@@ -254,7 +254,7 @@ async def get_matter_fabrics(self, node_id: int) -> list[MatterFabricData]:
                 fabric_id=f.fabricID,
                 vendor_id=f.vendorID,
                 fabric_index=f.fabricIndex,
-                fabric_label=f.label if f.label else None,
+                fabric_label=f.label or None,
                 vendor_name=vendors_map.get(str(f.vendorID)),
             )
             for f in fabrics
diff --git a/matter_server/client/models/node.py b/matter_server/client/models/node.py
index f8bf274c..6d2c7a4a 100644
--- a/matter_server/client/models/node.py
+++ b/matter_server/client/models/node.py
@@ -358,7 +358,7 @@ def update(self, node_data: MatterNodeData) -> None:
 
     def update_attribute(self, attribute_path: str, new_value: Any) -> None:
         """Handle Attribute value update."""
-        endpoint_id = int(attribute_path.split("/")[0])
+        endpoint_id = int(attribute_path.split("/", maxsplit=1)[0])
         if endpoint_id not in self.endpoints:
             # race condition when a bridge is in the process of adding a new endpoint
             return
diff --git a/matter_server/common/models.py b/matter_server/common/models.py
index fb897502..d8376558 100644
--- a/matter_server/common/models.py
+++ b/matter_server/common/models.py
@@ -5,7 +5,7 @@
 from collections.abc import Callable
 from dataclasses import dataclass, field
 from datetime import datetime  # noqa: TC003
-from enum import Enum
+from enum import Enum, StrEnum
 from typing import Any
 
 # Enums and constants
@@ -25,7 +25,7 @@ class EventType(Enum):
     ENDPOINT_REMOVED = "endpoint_removed"
 
 
-class APICommand(str, Enum):
+class APICommand(StrEnum):
     """Enum with all known API commands."""
 
     START_LISTENING = "start_listening"
diff --git a/matter_server/server/ota/provider.py b/matter_server/server/ota/provider.py
index 606ffda8..7702440e 100644
--- a/matter_server/server/ota/provider.py
+++ b/matter_server/server/ota/provider.py
@@ -320,7 +320,7 @@ async def fetch_update(self, update_desc: dict) -> None:
 
         if parsed_url.scheme in ["http", "https"]:
             file_path = await self._download_update(url, checksum_alg)
-        elif parsed_url.scheme in ["file"]:
+        elif parsed_url.scheme == "file":
             file_path = self._ota_provider_base_dir / Path(parsed_url.path[1:])
             if not await asyncio.to_thread(file_path.exists):
                 LOGGER.warning("Local update file not found: %s", file_path)
diff --git a/matter_server/server/server.py b/matter_server/server/server.py
index c381e68b..0e5315f2 100644
--- a/matter_server/server/server.py
+++ b/matter_server/server/server.py
@@ -297,7 +297,7 @@ def scope_ipv6_lla(self, ip_addr: str) -> str:
 
         if ip_addr_parsed.scope_id is not None:
             # This type of IPv6 manipulation is not supported by the ipaddress lib
-            ip_addr = ip_addr.split("%")[0]
+            ip_addr = ip_addr.split("%", maxsplit=1)[0]
 
         # Rely on host OS routing table
         if self.primary_interface is None:
diff --git a/pyproject.toml b/pyproject.toml
index 8b0800da..fb426d9b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -52,7 +52,7 @@ test = [
   "pytest-asyncio==1.3.0",
   "pytest-aiohttp==1.1.0",
   "pytest-cov==7.0.0",
-  "ruff==0.14.14",
+  "ruff==0.15.1",
   "tomli==2.4.0",
 ]
 
diff --git a/scripts/generate_devices.py b/scripts/generate_devices.py
index 8fb4d321..5d0ab1d9 100644
--- a/scripts/generate_devices.py
+++ b/scripts/generate_devices.py
@@ -32,7 +32,7 @@ def gen_cls_name(name: str):
         if char in ("-", "/"):
             next_upper = True
             continue
-        elif char in ("."):
+        elif char == ".":
             continue
         elif next_upper:
             char = char.upper()