diff --git a/appium/version.py b/appium/version.py
index 0616a7c5..108a17d0 100644
--- a/appium/version.py
+++ b/appium/version.py
@@ -16,7 +16,10 @@
 
 
 def _get_version():
-    return metadata.version('Appium-Python-Client')
+    try:
+        return metadata.version('Appium-Python-Client')
+    except metadata.PackageNotFoundError:
+        return 'unknown'
 
 
 version = _get_version()
diff --git a/pyproject.toml b/pyproject.toml
index fd575e09..50eabe90 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [project]
 name = "Appium-Python-Client"
 description = "Python client for Appium"
-version = "5.3.0"
+version = "6.0.0"
 readme = "README.md"
 license = "Apache-2.0"
 license-files = ["LICENSE"]
@@ -64,11 +64,6 @@ dev = [
 requires = ["hatchling"]
 build-backend = "hatchling.build"
 
-[tool.hatch.version]
-source = "regex"
-path = "appium/version.py"
-pattern = "(?P<version>\\d+\\.\\d+\\.\\d+)"
-
 [tool.hatch.build]
 exclude = [
   "test/",
@@ -94,7 +89,7 @@ major_on_zero = true
 allow_zero_version = false
 no_git_verify = false
 tag_format = "v{version}"
-version_toml = ["pyproject.toml:project.version"]
+version_toml = ["pyproject.toml:project.version", "appium/version.py:version"]
 
 [tool.semantic_release.branches.main]
 match = "(main|master)"
diff --git a/setup.py b/setup.py
deleted file mode 100644
index f32eab92..00000000
--- a/setup.py
+++ /dev/null
@@ -1,45 +0,0 @@
-#!/usr/bin/env python
-
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# FIXME: Remove this setup.py completely.
-# Then, we should bump the major version since the package will not include setup.py.
-
-try:
-    # Python 3.11+
-    import tomllib
-except Exception:
-    # for older versions
-    import tomli as tomllib
-
-with open('pyproject.toml', 'rb') as f:
-    pyproject = tomllib.load(f)
-    project = pyproject['project']
-
-from setuptools import find_packages, setup
-
-setup(
-    name=project['name'],
-    version=project['version'],
-    description=project['description'],
-    keywords=project['keywords'],
-    author=project['authors'][0]['name'],
-    author_email=project['authors'][0]['email'],
-    maintainer=', '.join([maintainer['name'] for maintainer in project['maintainers']]),
-    url=project['urls']['Homepage'],
-    package_data={'appium': ['py.typed']},
-    packages=find_packages(include=['appium*']),
-    license=project['license'],
-    classifiers=project['classifiers'],
-    install_requires=project['dependencies'],
-)
diff --git a/uv.lock b/uv.lock
index b2748668..74cc641f 100644
--- a/uv.lock
+++ b/uv.lock
@@ -43,7 +43,7 @@ wheels = [
 
 [[package]]
 name = "appium-python-client"
-version = "5.3.0"
+version = "6.0.0"
 source = { editable = "." }
 dependencies = [
     { name = "selenium", version = "4.36.0", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version < '3.10'" },