diff --git a/karapace/karapace.py b/karapace/karapace.py
index 9a310d6aa..61ed3d9be 100644
--- a/karapace/karapace.py
+++ b/karapace/karapace.py
@@ -11,7 +11,6 @@
 from karapace.rapu import HTTPResponse, RestApp
 from typing import NoReturn, Union
 
-import asyncio
 import logging
 
 
@@ -23,7 +22,6 @@ def __init__(self, config: Config) -> None:
         self.route("/", callback=self.root_get, method="GET")
         self.log = logging.getLogger("Karapace")
         self.app.on_startup.append(self.create_http_client)
-        self.master_lock = asyncio.Lock()
         self.log.info("Karapace initialized")
         self.app.on_shutdown.append(self.close_by_app)
 
diff --git a/karapace/schema_registry_apis.py b/karapace/schema_registry_apis.py
index 287499544..746e3b733 100644
--- a/karapace/schema_registry_apis.py
+++ b/karapace/schema_registry_apis.py
@@ -57,6 +57,7 @@ def __init__(self, config: Config) -> None:
         self.ksr = KafkaSchemaReader(config=self.config, master_coordinator=self.mc)
         self.ksr.start()
         self.schema_lock = asyncio.Lock()
+        self._master_lock = asyncio.Lock()
 
     def _create_producer(self) -> KafkaProducer:
         while True:
@@ -643,7 +644,7 @@ async def subject_versions_list(self, content_type, *, subject):
         self.r(list(subject_data["schemas"]), content_type, status=HTTPStatus.OK)
 
     async def get_master(self) -> Tuple[bool, Optional[str]]:
-        async with self.master_lock:
+        async with self._master_lock:
             while True:
                 are_we_master, master_url = self.mc.get_master_info()
                 if are_we_master is None:
diff --git a/tests/integration/conftest.py b/tests/integration/conftest.py
index 47da27f3f..46abb58fc 100644
--- a/tests/integration/conftest.py
+++ b/tests/integration/conftest.py
@@ -88,8 +88,7 @@ def fixture_kafka_server(
     lock_file = lock_path_for(transfer_file)
 
     with ExitStack() as stack:
-        # There is an issue with pylint here, see https:/github.com/tox-dev/py-filelock/issues/102
-        with FileLock(str(lock_file)):  # pylint: disable=abstract-class-instantiated
+        with FileLock(str(lock_file)):
             if transfer_file.exists():
                 config_data = ujson.loads(transfer_file.read_text())
                 zk_config = ZKConfig.from_dict(config_data["zookeeper"])
@@ -147,7 +146,7 @@ def fixture_kafka_server(
         yield kafka_servers
 
         # Signal the worker finished
-        with FileLock(str(lock_file)):  # pylint: disable=abstract-class-instantiated
+        with FileLock(str(lock_file)):
             assert transfer_file.exists(), "transfer_file disappeared"
             config_data = ujson.loads(transfer_file.read_text())
             config_data[WORKER_COUNTER_KEY] -= 1
@@ -156,7 +155,7 @@ def fixture_kafka_server(
         # Wait until every worker finished before stopping the servers
         worker_counter = float("inf")
         while worker_counter > 0:
-            with FileLock(str(lock_file)):  # pylint: disable=abstract-class-instantiated
+            with FileLock(str(lock_file)):
                 assert transfer_file.exists(), "transfer_file disappeared"
                 config_data = ujson.loads(transfer_file.read_text())
                 worker_counter = config_data[WORKER_COUNTER_KEY]
diff --git a/tests/integration/test_schema_reader.py b/tests/integration/test_schema_reader.py
index d15bc1a96..f0d2c806b 100644
--- a/tests/integration/test_schema_reader.py
+++ b/tests/integration/test_schema_reader.py
@@ -5,8 +5,9 @@
 from karapace.master_coordinator import MasterCoordinator
 from karapace.schema_reader import KafkaSchemaReader
 from karapace.utils import json_encode
+from tests.integration.utils.kafka_server import KafkaServers
 from tests.schemas.json_schemas import TRUE_SCHEMA
-from tests.utils import create_group_name_factory, create_subject_name_factory, KafkaServers, new_random_name
+from tests.utils import create_group_name_factory, create_subject_name_factory, new_random_name
 
 import time
 
diff --git a/tests/unit/conftest.py b/tests/unit/conftest.py
index 24bff1780..17504b1d4 100644
--- a/tests/unit/conftest.py
+++ b/tests/unit/conftest.py
@@ -9,13 +9,13 @@ class MockClient:
     def __init__(self, *args, **kwargs):
         pass
 
-    async def get_schema_for_id(self, *args, **kwargs):  # pylint: disable=unused-argument,no-self-use
+    async def get_schema_for_id(self, *args, **kwargs):  # pylint: disable=unused-argument
         return ValidatedTypedSchema.parse(SchemaType.AVRO, schema_avro_json)
 
-    async def get_latest_schema(self, *args, **kwargs):  # pylint: disable=unused-argument,no-self-use
+    async def get_latest_schema(self, *args, **kwargs):  # pylint: disable=unused-argument
         return 1, ValidatedTypedSchema.parse(SchemaType.AVRO, schema_avro_json)
 
-    async def post_new_schema(self, *args, **kwargs):  # pylint: disable=unused-argument,no-self-use
+    async def post_new_schema(self, *args, **kwargs):  # pylint: disable=unused-argument
         return 1
 
 
@@ -23,18 +23,18 @@ class MockProtobufClient:
     def __init__(self, *args, **kwargs):
         pass
 
-    async def get_schema_for_id2(self, *args, **kwargs):  # pylint: disable=unused-argument,no-self-use
+    async def get_schema_for_id2(self, *args, **kwargs):  # pylint: disable=unused-argument
         return ValidatedTypedSchema.parse(SchemaType.PROTOBUF, trim_margin(schema_protobuf2))
 
-    async def get_schema_for_id(self, *args, **kwargs):  # pylint: disable=unused-argument,no-self-use
+    async def get_schema_for_id(self, *args, **kwargs):  # pylint: disable=unused-argument
         if args[0] != 1:
             return None
         return ValidatedTypedSchema.parse(SchemaType.PROTOBUF, trim_margin(schema_protobuf))
 
-    async def get_latest_schema(self, *args, **kwargs):  # pylint: disable=unused-argument,no-self-use
+    async def get_latest_schema(self, *args, **kwargs):  # pylint: disable=unused-argument
         return 1, ValidatedTypedSchema.parse(SchemaType.PROTOBUF, trim_margin(schema_protobuf))
 
-    async def post_new_schema(self, *args, **kwargs):  # pylint: disable=unused-argument,no-self-use
+    async def post_new_schema(self, *args, **kwargs):  # pylint: disable=unused-argument
         return 1