diff --git a/MANIFEST b/MANIFEST
index b6da2c9..38f2611 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -1,8 +1,8 @@
 # file GENERATED by distutils, do NOT edit
 setup.cfg
 setup.py
-heatmiserV3/__init__.py
-heatmiserV3/connection.py
-heatmiserV3/constants.py
-heatmiserV3/heatmiser.py
+heatmiserv3/__init__.py
+heatmiserv3/connection.py
+heatmiserv3/constants.py
+heatmiserv3/heatmiser.py
 config/config.yml
diff --git a/README.md b/README.md
index 322d14f..2ed66a6 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
-#HeatmiserV3
-[![Build Status](https://github.com/andylockran/heatmiserV3/actions/workflows/python-package.yml/badge.svg)](https://github.com/andylockran/heatmiserV3/actions/workflows/python-package.yml)
+#heatmiserv3
+[![Build Status](https://github.com/andylockran/heatmiserv3/actions/workflows/python-package.yml/badge.svg)](https://github.com/andylockran/heatmiserv3/actions/workflows/python-package.yml)
 
 This library has been created from the work carried out by 
 Neil Trimboy in 2011 here:
diff --git a/examples/get_temperature.py b/examples/get_temperature.py
index cd62785..e187536 100644
--- a/examples/get_temperature.py
+++ b/examples/get_temperature.py
@@ -1,4 +1,4 @@
-from heatmiserV3 import heatmiser, connection
+from heatmiserv3 import heatmiser, connection
 import logging
 
 """
diff --git a/examples/set_temperature_tp_20.py b/examples/set_temperature_tp_20.py
index 26b257c..a4dbdd3 100644
--- a/examples/set_temperature_tp_20.py
+++ b/examples/set_temperature_tp_20.py
@@ -1,4 +1,4 @@
-from heatmiserV3 import heatmiser, connection
+from heatmiserv3 import heatmiser, connection
 import logging
 
 """
diff --git a/heatmiserV3.egg-info/PKG-INFO b/heatmiserV3.egg-info/PKG-INFO
index 65a6399..fb7f295 100644
--- a/heatmiserV3.egg-info/PKG-INFO
+++ b/heatmiserV3.egg-info/PKG-INFO
@@ -1,9 +1,9 @@
 Metadata-Version: 2.1
-Name: heatmiserV3
+Name: heatmiserv3
 Version: 1.2.2
 Summary: A library to interact with Heatmiser Themostats using V3
-Home-page: https://github.com/andylockran/heatmiserV3
-Download-URL: https://github.com/andylockran/heatmiserV3/tarball/1.2.2
+Home-page: https://github.com/andylockran/heatmiserv3
+Download-URL: https://github.com/andylockran/heatmiserv3/tarball/1.2.2
 Author: Andy Loughran
 Author-email: andy@zrmt.com
 Keywords: v3,thermostat,heatmiser,prt,serial,uh1
diff --git a/heatmiserV3.egg-info/SOURCES.txt b/heatmiserV3.egg-info/SOURCES.txt
index 8cf1379..42919d3 100644
--- a/heatmiserV3.egg-info/SOURCES.txt
+++ b/heatmiserV3.egg-info/SOURCES.txt
@@ -2,14 +2,14 @@ LICENSE.TXT
 README.md
 setup.cfg
 setup.py
-heatmiserV3/__init__.py
-heatmiserV3/config.yml
-heatmiserV3/connection.py
-heatmiserV3/constants.py
-heatmiserV3/heatmiser.py
-heatmiserV3.egg-info/PKG-INFO
-heatmiserV3.egg-info/SOURCES.txt
-heatmiserV3.egg-info/dependency_links.txt
-heatmiserV3.egg-info/requires.txt
-heatmiserV3.egg-info/top_level.txt
+heatmiserv3/__init__.py
+heatmiserv3/config.yml
+heatmiserv3/connection.py
+heatmiserv3/constants.py
+heatmiserv3/heatmiser.py
+heatmiserv3.egg-info/PKG-INFO
+heatmiserv3.egg-info/SOURCES.txt
+heatmiserv3.egg-info/dependency_links.txt
+heatmiserv3.egg-info/requires.txt
+heatmiserv3.egg-info/top_level.txt
 tests/test_heatmiser.py
\ No newline at end of file
diff --git a/heatmiserV3.egg-info/top_level.txt b/heatmiserV3.egg-info/top_level.txt
index 1fcf936..1067d5c 100644
--- a/heatmiserV3.egg-info/top_level.txt
+++ b/heatmiserV3.egg-info/top_level.txt
@@ -1 +1 @@
-heatmiserV3
+heatmiserv3
diff --git a/heatmiserv3/connection.py b/heatmiserv3/connection.py
index 4ef94bb..dab1949 100644
--- a/heatmiserv3/connection.py
+++ b/heatmiserv3/connection.py
@@ -2,7 +2,7 @@
 import serial
 import logging
 from . import constants
-from heatmiserV3 import heatmiser
+from heatmiserv3 import heatmiser
 
 logging.basicConfig(level=logging.INFO)
 
diff --git a/pyproject.toml b/pyproject.toml
index 39f2cfb..a1b89cb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "heatmiserv3"
-version = "1.2.8"
+version = "2.0.0"
 description = "A library to interact with Heatmiser Themostats using V3 protocol."
 authors = ["Andy Loughran <andy@lockran.com>"]
 license = "Apache 2"
diff --git a/setup.py b/setup.py
index 83846da..5ad6ddb 100644
--- a/setup.py
+++ b/setup.py
@@ -2,15 +2,15 @@
 from setuptools import setup
 
 setup(
-    name="heatmiserV3",
-    packages=["heatmiserV3"],  # this must be the same as the name above
+    name="heatmiserv3",
+    packages=["heatmiserv3"],  # this must be the same as the name above
     description="A library to interact with Heatmiser Themostats using V3",
     author="Andy Loughran",
     author_email="andy@zrmt.com",
     tests_require=["pytest", "pylint", "flake8"],
-    data_files=[("config", ["heatmiserV3/config.yml"])],
+    data_files=[("config", ["heatmiserv3/config.yml"])],
     include_package_data=True,
-    url="https://github.com/andylockran/heatmiserV3",
+    url="https://github.com/andylockran/heatmiserv3",
     keywords=["v3", "thermostat", "heatmiser", "prt", "serial", "uh1"],
     test_suite="tests.test_heatmiser",
     classifiers=[],
diff --git a/tests/test_heatmiser.py b/tests/test_heatmiser.py
index b737172..14eeca9 100644
--- a/tests/test_heatmiser.py
+++ b/tests/test_heatmiser.py
@@ -1,6 +1,6 @@
 """Tests for HeatmiserThermostat and CRC Methods"""
 import unittest
-from heatmiserV3 import heatmiser
+from heatmiserv3 import heatmiser
 
 
 class TestCRCMethods(unittest.TestCase):