diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index b6804ca..eab9758 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.12"]
+        python-version: ["3.7"]
 
     steps:
     - uses: actions/checkout@v3
@@ -27,14 +27,8 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        python -m pip install flake8 pytest
+        python -m pip install pytest
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
-    - name: Lint with flake8
-      run: |
-        # stop the build if there are Python syntax errors or undefined names
-        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
-        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
-        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
     - name: Test with pytest
       run: |
         pytest
diff --git a/__init__.py b/__init__.py
deleted file mode 100644
index e69de29..0000000
diff --git a/demo.py b/demo.py
index 1071667..a0ecc7a 100644
--- a/demo.py
+++ b/demo.py
@@ -4,7 +4,7 @@
 import logging
 import sys
 
-from pybls21 import S21Client
+from pybls21.client import S21Client
 
 
 def help():
diff --git a/pybls21/__init__.py b/pybls21/__init__.py
old mode 100755
new mode 100644
index 7830051..e69de29
--- a/pybls21/__init__.py
+++ b/pybls21/__init__.py
@@ -1 +0,0 @@
-from pybls21.client import S21Client
diff --git a/pybls21/client.py b/pybls21/client.py
old mode 100755
new mode 100644
index 8c289bd..60b0269
--- a/pybls21/client.py
+++ b/pybls21/client.py
@@ -2,13 +2,13 @@
 
 from .constants import *
 from .exceptions import *
-from .models import ClimateDevice, HVACMode, HVACAction, TEMP_CELSIUS, ClimateEntityFeature
+from .models import ClimateDevice, ClimateEntityFeature, HVACAction, HVACMode, TEMP_CELSIUS
 
-from typing import Callable, Optional
+from typing import Callable, List, Optional
 from threading import Lock
 
 
-def _parse_firmware_version(firmware_info: list[int]) -> str:
+def _parse_firmware_version(firmware_info: List[int]) -> str:
     major_minor = firmware_info[0]
     major = (major_minor & 0xff00) >> 8
     minor = major_minor & 0xff
@@ -82,7 +82,7 @@ def _poll(self) -> ClimateDevice:
         current_fan_level: int = holding_registers[HR_SPEED_MODE]  # 255 - manual
         temp_before_heating_x10: int = input_registers[IR_CurTEMP_SuAirIn]
         temp_after_heating_x10: int = input_registers[IR_CurTEMP_SuAirOut]
-        firmware_info: list[int] = input_registers[IR_VerMAIN_FMW_start:IR_VerMAIN_FMW_end+1]
+        firmware_info: List[int] = input_registers[IR_VerMAIN_FMW_start:IR_VerMAIN_FMW_end+1]
         operation_mode: int = holding_registers[HR_OPERATION_MODE]
         manual_fan_speed_percent: int = holding_registers[HR_ManualSPEED]
 
diff --git a/pybls21/models.py b/pybls21/models.py
old mode 100755
new mode 100644
index a6465c7..d0c9eb4
--- a/pybls21/models.py
+++ b/pybls21/models.py
@@ -1,56 +1,56 @@
-from typing import List, NamedTuple, Optional
-
-from enum import Enum
-
-
-TEMP_CELSIUS: str = "°C"
-
-
-class ClimateEntityFeature(int, Enum):
-    TARGET_TEMPERATURE = 1
-    FAN_MODE = 8
-
-
-class HVACMode(str, Enum):
-    OFF = "off"
-    HEAT = "heat"
-    COOL = "cool"
-    AUTO = "auto"
-    FAN_ONLY = "fan_only"
-
-
-class HVACAction(str, Enum):
-    COOLING = "cooling"
-    FAN = "fan"
-    HEATING = "heating"
-    IDLE = "idle"
-    OFF = "off"
-
-
-class ClimateDevice(NamedTuple):
-    available: bool
-    name: str
-    unique_id: str
-    temperature_unit: str
-    precision: float
-    current_temperature: float
-    target_temperature: float
-    target_temperature_step: float
-    max_temp: float
-    min_temp: float
-    current_humidity: Optional[float]
-    hvac_mode: str
-    hvac_action: str
-    hvac_modes: List[str]
-    fan_mode: Optional[int]
-    fan_modes: Optional[List[int]]
-    supported_features: int
-    manufacturer: str
-    model: Optional[str]
-    sw_version: Optional[str]
-    is_boosting: bool
-    current_intake_temperature: float
-    manual_fan_speed_percent: int
-    max_fan_level: int
-    filter_state: int
-    alarm_state: int
+from typing import List, NamedTuple, Optional
+
+from enum import Enum
+
+
+TEMP_CELSIUS: str = "°C"
+
+
+class ClimateEntityFeature(int, Enum):
+    TARGET_TEMPERATURE = 1
+    FAN_MODE = 8
+
+
+class HVACMode(str, Enum):
+    OFF = "off"
+    HEAT = "heat"
+    COOL = "cool"
+    AUTO = "auto"
+    FAN_ONLY = "fan_only"
+
+
+class HVACAction(str, Enum):
+    COOLING = "cooling"
+    FAN = "fan"
+    HEATING = "heating"
+    IDLE = "idle"
+    OFF = "off"
+
+
+class ClimateDevice(NamedTuple):
+    available: bool
+    name: str
+    unique_id: str
+    temperature_unit: str
+    precision: float
+    current_temperature: float
+    target_temperature: float
+    target_temperature_step: float
+    max_temp: float
+    min_temp: float
+    current_humidity: Optional[float]
+    hvac_mode: str
+    hvac_action: str
+    hvac_modes: List[str]
+    fan_mode: Optional[int]
+    fan_modes: Optional[List[int]]
+    supported_features: int
+    manufacturer: str
+    model: Optional[str]
+    sw_version: Optional[str]
+    is_boosting: bool
+    current_intake_temperature: float
+    manual_fan_speed_percent: int
+    max_fan_level: int
+    filter_state: int
+    alarm_state: int
diff --git a/pyproject.toml b/pyproject.toml
deleted file mode 100644
index 1eecb10..0000000
--- a/pyproject.toml
+++ /dev/null
@@ -1,4 +0,0 @@
-[tool.pytest.ini_options]
-addopts = [
-    "--import-mode=importlib",
-]
\ No newline at end of file
diff --git a/setup.py b/setup.py
index cec627a..a205954 100755
--- a/setup.py
+++ b/setup.py
@@ -5,14 +5,14 @@
 
 setuptools.setup(
     name="pybls21",
-    version="3.0.1",
+    version="3.0.2",
     author="Julius Vitkauskas",
     author_email="zadintuvas@gmail.com",
     description="An api allowing control of AC state (temperature, on/off, speed) of an Blauberg S21 device locally over TCP",
     long_description=long_description,
     long_description_content_type="text/markdown",
     url="https://github.com/jvitkauskas/pybls21",
-    packages=setuptools.find_packages(),
+    packages=setuptools.find_packages(exclude=["tests"]),
     install_requires=['pyModbusTCP>=0.2.1,<1.0'],
     classifiers=[
         "Programming Language :: Python :: 3",
diff --git a/tests/test_client.py b/tests/test_client.py
index 5c1fa3a..8f7da28 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -2,9 +2,8 @@
 
 from pyModbusTCP.server import ModbusServer, DataBank
 
-from pybls21.constants import *
-from pybls21.exceptions import *
 from pybls21.client import S21Client
+from pybls21.constants import *
 from pybls21.models import HVACAction, HVACMode, ClimateDevice, ClimateEntityFeature
 
 
@@ -304,6 +303,8 @@ def test_set_temperature(self):
 
 
 class TestDataBank(DataBank):
+    __test__ = False
+
     def __init__(self):
         super().__init__(coils_size=25, d_inputs_size=72, h_regs_size=182, i_regs_size=51)
         self.reset()