diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4bc6b0c..71e542f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 ### Fixed
+- Attribute truncation for every method with attributes, by @HardNorth
+
+## [5.5.1]
+### Fixed
 - Multipart file upload for Async clients, by @HardNorth
 
 ## [5.5.0]
diff --git a/reportportal_client/__init__.py b/reportportal_client/__init__.py
index d0bb0e0..340801f 100644
--- a/reportportal_client/__init__.py
+++ b/reportportal_client/__init__.py
@@ -74,6 +74,8 @@ def create_client(
     :type launch_uuid_print:        bool
     :param print_output:            Set output stream for Launch UUID printing.
     :type print_output:             OutputType
+    :param truncate_attributes:     Truncate test item attributes to default maximum length.
+    :type truncate_attributes:      bool
     :param log_batch_size:          Option to set the maximum number of logs that can be processed in one
                                     batch.
     :type log_batch_size:           int
diff --git a/reportportal_client/aio/client.py b/reportportal_client/aio/client.py
index 5818ac1..3fab8cb 100644
--- a/reportportal_client/aio/client.py
+++ b/reportportal_client/aio/client.py
@@ -88,6 +88,7 @@ class Client:
     mode: str
     launch_uuid_print: bool
     print_output: OutputType
+    truncate_attributes: bool
     _skip_analytics: str
     _session: Optional[RetryingClientSession]
     __stat_task: Optional[asyncio.Task]
@@ -107,6 +108,7 @@ def __init__(
             mode: str = 'DEFAULT',
             launch_uuid_print: bool = False,
             print_output: OutputType = OutputType.STDOUT,
+            truncate_attributes: bool = True,
             **kwargs: Any
     ) -> None:
         """Initialize the class instance with arguments.
@@ -125,6 +127,7 @@ def __init__(
         :param mode:                   Launch mode, all Launches started by the client will be in that mode.
         :param launch_uuid_print:      Print Launch UUID into passed TextIO or by default to stdout.
         :param print_output:           Set output stream for Launch UUID printing.
+        :param truncate_attributes:    Truncate test item attributes to default maximum length.
         """
         self.api_v1, self.api_v2 = 'v1', 'v2'
         self.endpoint = endpoint
@@ -144,6 +147,7 @@ def __init__(
         self._session = None
         self.__stat_task = None
         self.api_key = api_key
+        self.truncate_attributes = truncate_attributes
 
     async def session(self) -> RetryingClientSession:
         """Return aiohttp.ClientSession class instance, initialize it if necessary.
@@ -156,7 +160,7 @@ async def session(self) -> RetryingClientSession:
         if self.verify_ssl is None or (type(self.verify_ssl) == bool and not self.verify_ssl):
             ssl_config = False
         else:
-            if type(self.verify_ssl) == str:
+            if type(self.verify_ssl) is str:
                 ssl_config = ssl.create_default_context(ssl.Purpose.CLIENT_AUTH, cafile=self.verify_ssl)
             else:
                 ssl_config = ssl.create_default_context(ssl.Purpose.CLIENT_AUTH, cafile=certifi.where())
@@ -242,7 +246,7 @@ async def start_launch(self,
         request_payload = LaunchStartRequest(
             name=name,
             start_time=start_time,
-            attributes=attributes,
+            attributes=verify_value_length(attributes) if self.truncate_attributes else attributes,
             description=description,
             mode=self.mode,
             rerun=rerun,
@@ -306,7 +310,7 @@ async def start_test_item(self,
             start_time,
             item_type,
             launch_uuid,
-            attributes=verify_value_length(attributes),
+            attributes=verify_value_length(attributes) if self.truncate_attributes else attributes,
             code_ref=code_ref,
             description=description,
             has_stats=has_stats,
@@ -355,7 +359,7 @@ async def finish_test_item(self,
             end_time,
             launch_uuid,
             status,
-            attributes=verify_value_length(attributes),
+            attributes=verify_value_length(attributes) if self.truncate_attributes else attributes,
             description=description,
             is_skipped_an_issue=self.is_skipped_an_issue,
             issue=issue,
@@ -389,7 +393,7 @@ async def finish_launch(self,
         request_payload = LaunchFinishRequest(
             end_time,
             status=status,
-            attributes=verify_value_length(attributes),
+            attributes=verify_value_length(attributes) if self.truncate_attributes else attributes,
             description=kwargs.get('description')
         ).payload
         response = await AsyncHttpRequest((await self.session()).put, url=url, json=request_payload,
@@ -415,7 +419,7 @@ async def update_test_item(self,
         """
         data = {
             'description': description,
-            'attributes': verify_value_length(attributes),
+            'attributes': verify_value_length(attributes) if self.truncate_attributes else attributes,
         }
         item_id = await self.get_item_id_by_uuid(item_uuid)
         url = root_uri_join(self.base_url_v1, 'item', item_id, 'update')
@@ -650,6 +654,7 @@ def __init__(
         :param mode:                    Launch mode, all Launches started by the client will be in that mode.
         :param launch_uuid_print:       Print Launch UUID into passed TextIO or by default to stdout.
         :param print_output:            Set output stream for Launch UUID printing.
+        :param truncate_attributes:     Truncate test item attributes to default maximum length.
         :param client:                  ReportPortal async Client instance to use. If set, all above arguments
                                         will be ignored.
         :param launch_uuid:             A launch UUID to use instead of starting own one.
@@ -1009,6 +1014,7 @@ def __init__(
         :param mode:                    Launch mode, all Launches started by the client will be in that mode.
         :param launch_uuid_print:       Print Launch UUID into passed TextIO or by default to stdout.
         :param print_output:            Set output stream for Launch UUID printing.
+        :param truncate_attributes:     Truncate test item attributes to default maximum length.
         :param client:                  ReportPortal async Client instance to use. If set, all above arguments
                                         will be ignored.
         :param launch_uuid:             A launch UUID to use instead of starting own one.
@@ -1384,6 +1390,7 @@ def __init__(
         :param mode:                    Launch mode, all Launches started by the client will be in that mode.
         :param launch_uuid_print:       Print Launch UUID into passed TextIO or by default to stdout.
         :param print_output:            Set output stream for Launch UUID printing.
+        :param truncate_attributes:     Truncate test item attributes to default maximum length.
         :param client:                  ReportPortal async Client instance to use. If set, all above arguments
                                         will be ignored.
         :param launch_uuid:             A launch UUID to use instead of starting own one.
@@ -1406,7 +1413,7 @@ def __init__(
         self.shutdown_timeout = shutdown_timeout
         self.__init_task_list(task_list, task_mutex)
         self.__init_loop(loop)
-        if type(launch_uuid) == str:
+        if type(launch_uuid) is str:
             super().__init__(endpoint, project,
                              launch_uuid=self.create_task(self.__return_value(launch_uuid)), **kwargs)
         else:
@@ -1561,6 +1568,7 @@ def __init__(
         :param mode:                    Launch mode, all Launches started by the client will be in that mode.
         :param launch_uuid_print:       Print Launch UUID into passed TextIO or by default to stdout.
         :param print_output:            Set output stream for Launch UUID printing.
+        :param truncate_attributes:     Truncate test item attributes to default maximum length.
         :param client:                  ReportPortal async Client instance to use. If set, all above arguments
                                         will be ignored.
         :param launch_uuid:             A launch UUID to use instead of starting own one.
@@ -1588,7 +1596,7 @@ def __init__(
         self.__init_task_list(task_list, task_mutex)
         self.__last_run_time = datetime.time()
         self.__init_loop(loop)
-        if type(launch_uuid) == str:
+        if type(launch_uuid) is str:
             super().__init__(endpoint, project,
                              launch_uuid=self.create_task(self.__return_value(launch_uuid)), **kwargs)
         else:
diff --git a/reportportal_client/client.py b/reportportal_client/client.py
index 4f6b209..8ea109d 100644
--- a/reportportal_client/client.py
+++ b/reportportal_client/client.py
@@ -363,6 +363,7 @@ class RPClient(RP):
     mode: str
     launch_uuid_print: Optional[bool]
     print_output: OutputType
+    truncate_attributes: bool
     _skip_analytics: str
     _item_stack: LifoQueue
     _log_batcher: LogBatcher[RPRequestLog]
@@ -433,6 +434,7 @@ def __init__(
             launch_uuid_print: bool = False,
             print_output: OutputType = OutputType.STDOUT,
             log_batcher: Optional[LogBatcher[RPRequestLog]] = None,
+            truncate_attributes: bool = True,
             **kwargs: Any
     ) -> None:
         """Initialize the class instance with arguments.
@@ -455,6 +457,7 @@ def __init__(
         :param launch_uuid_print:      Print Launch UUID into passed TextIO or by default to stdout.
         :param print_output:           Set output stream for Launch UUID printing.
         :param log_batcher:            Use existing LogBatcher instance instead of creation of own one.
+        :param truncate_attributes:    Truncate test item attributes to default maximum length.
         """
         set_current(self)
         self.api_v1, self.api_v2 = 'v1', 'v2'
@@ -490,6 +493,7 @@ def __init__(
         self._skip_analytics = getenv('AGENT_NO_ANALYTICS')
         self.launch_uuid_print = launch_uuid_print
         self.print_output = print_output
+        self.truncate_attributes = truncate_attributes
 
         self.api_key = api_key
         if not self.api_key:
@@ -505,7 +509,7 @@ def __init__(
             if not self.api_key:
                 warnings.warn(
                     message='Argument `api_key` is `None` or empty string, that is not supposed to happen '
-                            'because Report Portal is usually requires an authorization key. Please check '
+                            'because ReportPortal is usually requires an authorization key. Please check '
                             'your code.',
                     category=RuntimeWarning,
                     stacklevel=2
@@ -538,7 +542,7 @@ def start_launch(self,
         request_payload = LaunchStartRequest(
             name=name,
             start_time=start_time,
-            attributes=attributes,
+            attributes=verify_value_length(attributes) if self.truncate_attributes else attributes,
             description=description,
             mode=self.mode,
             rerun=rerun,
@@ -601,7 +605,7 @@ def start_test_item(self,
             start_time,
             item_type,
             self.launch_uuid,
-            attributes=verify_value_length(attributes),
+            attributes=verify_value_length(attributes) if self.truncate_attributes else attributes,
             code_ref=code_ref,
             description=description,
             has_stats=has_stats,
@@ -655,7 +659,7 @@ def finish_test_item(self,
             end_time,
             self.launch_uuid,
             status,
-            attributes=attributes,
+            attributes=verify_value_length(attributes) if self.truncate_attributes else attributes,
             description=description,
             is_skipped_an_issue=self.is_skipped_an_issue,
             issue=issue,
@@ -691,7 +695,7 @@ def finish_launch(self,
             request_payload = LaunchFinishRequest(
                 end_time,
                 status=status,
-                attributes=attributes,
+                attributes=verify_value_length(attributes) if self.truncate_attributes else attributes,
                 description=kwargs.get('description')
             ).payload
             response = HttpRequest(self.session.put, url=url, json=request_payload,
@@ -718,7 +722,7 @@ def update_test_item(self, item_uuid: str, attributes: Optional[Union[list, dict
         """
         data = {
             'description': description,
-            'attributes': verify_value_length(attributes),
+            'attributes': verify_value_length(attributes) if self.truncate_attributes else attributes,
         }
         item_id = self.get_item_id_by_uuid(item_uuid)
         url = uri_join(self.base_url_v1, 'item', item_id, 'update')
diff --git a/setup.py b/setup.py
index 5055f95..3e4dee9 100644
--- a/setup.py
+++ b/setup.py
@@ -4,7 +4,7 @@
 
 from setuptools import setup, find_packages
 
-__version__ = '5.5.1'
+__version__ = '5.5.2'
 
 TYPE_STUBS = ['*.pyi']
 
diff --git a/tests/aio/test_aio_client.py b/tests/aio/test_aio_client.py
index bcc264a..c51028d 100644
--- a/tests/aio/test_aio_client.py
+++ b/tests/aio/test_aio_client.py
@@ -772,3 +772,31 @@ async def test_get_launch_ui_url(aio_client: Client):
     session.get.assert_called_once()
     call_args = session.get.call_args_list[0]
     assert expected_uri == call_args[0][0]
+
+
+@pytest.mark.skipif(sys.version_info < (3, 8),
+                    reason='the test requires AsyncMock which was introduced in Python 3.8')
+@pytest.mark.parametrize(
+    'method, mock_method, call_method, arguments',
+    [
+        ('start_launch', mock_basic_post_response, 'post', ['Test Launch', timestamp()]),
+        ('start_test_item', mock_basic_post_response, 'post', ['test_launch_uuid', 'Test Item', timestamp(),
+                                                               'SUITE']),
+        ('finish_test_item', mock_basic_post_response, 'put', ['test_launch_uuid', 'test_item_uuid',
+                                                               timestamp()]),
+        ('finish_launch', mock_basic_post_response, 'put', ['test_launch_uuid', timestamp()]),
+        ('update_test_item', mock_basic_post_response, 'put', ['test_item_uuid']),
+    ]
+)
+@pytest.mark.asyncio
+async def test_attribute_truncation(aio_client: Client, method, mock_method, call_method, arguments):
+    # noinspection PyTypeChecker
+    session: mock.AsyncMock = await aio_client.session()
+    mock_method(session)
+
+    await getattr(aio_client, method)(*arguments, **{'attributes': {'key': 'value' * 26}})
+    getattr(session, call_method).assert_called_once()
+    kwargs = getattr(session, call_method).call_args_list[0][1]
+    assert 'attributes' in kwargs['json']
+    assert kwargs['json']['attributes']
+    assert len(kwargs['json']['attributes'][0]['value']) == 128
diff --git a/tests/test_client.py b/tests/test_client.py
index d4a1f3b..83a0ab0 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -237,3 +237,27 @@ def test_client_pickling():
     pickled_client = pickle.dumps(client)
     unpickled_client = pickle.loads(pickled_client)
     assert unpickled_client is not None
+
+
+@pytest.mark.parametrize(
+    'method, call_method, arguments',
+    [
+        ('start_launch', 'post', ['Test Launch', timestamp()]),
+        ('start_test_item', 'post', ['Test Item', timestamp(), 'SUITE']),
+        ('finish_test_item', 'put', ['test_item_uuid', timestamp()]),
+        ('finish_launch', 'put', [timestamp()]),
+        ('update_test_item', 'put', ['test_item_uuid']),
+    ]
+)
+def test_attribute_truncation(rp_client: RPClient, method, call_method, arguments):
+    # noinspection PyTypeChecker
+    session: mock.Mock = rp_client.session
+    if method != 'start_launch':
+        rp_client._RPClient__launch_uuid = 'test_launch_id'
+
+    getattr(rp_client, method)(*arguments, **{'attributes': {'key': 'value' * 26}})
+    getattr(session, call_method).assert_called_once()
+    kwargs = getattr(session, call_method).call_args_list[0][1]
+    assert 'attributes' in kwargs['json']
+    assert kwargs['json']['attributes']
+    assert len(kwargs['json']['attributes'][0]['value']) == 128