diff --git a/Makefile b/Makefile
index 313594e..af4c4b3 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,5 @@
 CURRENT_VERSION:=$(shell grep "^Version: " PKG-INFO | cut -d" " -f2)
-INIT_VERSION:=$(shell grep "version" ./pyproject.toml | cut -d"=" -f2 | tr -d '"[:blank:]' )
-
+INIT_VERSION:=$(shell grep "__version__" pycronofy/__init__.py | cut -d"'" -f2)
 
 .PHONY: all
 all: test
diff --git a/pycronofy/__init__.py b/pycronofy/__init__.py
index eb0a23b..ace070d 100644
--- a/pycronofy/__init__.py
+++ b/pycronofy/__init__.py
@@ -1,9 +1,7 @@
 from pycronofy.client import Client  # noqa: F401
 from pycronofy import settings
-import importlib
-
+__version__ = '2.0.0'
 __name__ = 'PyCronofy'
-__version__ = importlib.metadata.version(__package__ or __name__)
 
 """
 SDK for Cronofy - the Scheduling Platform for Business
diff --git a/pycronofy/tests/__init__.py b/pycronofy/tests/__init__.py
deleted file mode 100644
index e69de29..0000000
diff --git a/pyproject.toml b/pyproject.toml
index 7e02b34..67b3a1d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "PyCronofy"
-version = "2.0.0"
+dynamic = ["version"]
 requires-python = ">=3.7"
 dependencies = [
     "requests>=2.20.0",
@@ -12,6 +12,9 @@ authors = [
     {name = "Cronofy", email = "support@cronofy.com"},
 ]
 
+[tool.setuptools.dynamic]
+version = {attr = "package.__version__"}
+
 [build-system]
 requires = ["setuptools"]
 build-backend = "setuptools.build_meta"
diff --git a/requirements.txt b/requirements.txt
index 6dc71dc..102c381 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ requests>=2.21.0
 pytz>=2018.9
 
 pytest>=6.2.4
-pytest-cov>=2.12.1
+pytest-cov>=4.1
 responses>=0.5.0
 twine>=4.0.2
 flake8