diff --git a/.circleci/config.yml b/.circleci/config.yml
index 1e43397..40481e6 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -2,7 +2,7 @@ version: 2.1
 
 resources:
   base_docker_image: &base_docker_image
-    image: 621799806001.dkr.ecr.us-east-1.amazonaws.com/pyenv-tox:1.0.0
+    image: 621799806001.dkr.ecr.us-east-1.amazonaws.com/pyenv-tox:2.0.3
     aws_auth:
       aws_access_key_id: $DEV_AWS_ACCESS_KEY_ID
       aws_secret_access_key: $DEV_AWS_SECRET_ACCESS_KEY
@@ -64,10 +64,12 @@ commands:
             - tox_cache-{{ checksum "tox.ini" }}
       - run:
           name: pyenv setup
-          command: pyenv local 2.7.16 3.5.7 3.6.8 3.7.12 3.8.12 3.9.10 3.10.2
+          command: pyenv local 3.8.19 3.9.19 3.10.14 3.11.8 3.12.2
       - run:
           name: tox
           command: tox --pre
+          environment:
+            VIRTUALENV_DISCOVERY: pyenv
       - save_cache:
           key: tox_cache-{{ checksum "tox.ini" }}
           paths:
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index ce1a805..01a4af5 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -32,7 +32,7 @@ $ pip install -e .
 Run tests:
 
 ```sh
-$ python setup.py test
+$ tox --pre
 ```
 
 ### Create a Feature Branch
diff --git a/datadotworld/__init__.py b/datadotworld/__init__.py
index 6aa239a..3fcd3e6 100644
--- a/datadotworld/__init__.py
+++ b/datadotworld/__init__.py
@@ -35,7 +35,7 @@
 )
 from datadotworld.datadotworld import DataDotWorld, UriParam  # noqa: F401
 
-__version__ = '1.8.5'
+__version__ = '2.0.0a'
 
 # Convenience top-level functions
 
diff --git a/setup.py b/setup.py
index 82d3ac5..8aa2842 100644
--- a/setup.py
+++ b/setup.py
@@ -46,7 +46,7 @@ def find_version(*paths):
     author='data.world',
     author_email='help@data.world',
     license='Apache 2.0',
-    python_requires='>=3.7',
+    python_requires='>=3.9',
     packages=find_packages(),
     keywords='data.world dataset',
     classifiers=[
@@ -55,10 +55,10 @@ def find_version(*paths):
         'Intended Audience :: Science/Research',
         'License :: OSI Approved :: Apache Software License',
         'Operating System :: OS Independent',
-        'Programming Language :: Python :: 3.7',
-        'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',
+        'Programming Language :: Python :: 3.11',
+        'Programming Language :: Python :: 3.12',
         'Topic :: Database :: Database Engines/Servers',
         'Topic :: Scientific/Engineering :: Information Analysis',
         'Topic :: Software Development :: Libraries :: Python Modules',
@@ -71,26 +71,14 @@ def find_version(*paths):
         'tableschema>=1.5.2,<2.0a',
         'python-dateutil>=2.6.0,<3.0a',
         'requests>=2.22.0,<3.0a',
+        'setuptools>=69.2.0,<70.0a',
         'six>=1.5.0,<2.0a',
         'tabulator>=1.22.0',
         'urllib3>=1.15,<2.0a',
     ],
-    setup_requires=[
-        'pytest-runner>=2.11,<3.0a',
-    ],
-    tests_require=[
-        'coverage>=4.4.2,<=4.5.3',
-        'doublex>=1.8.4,<2.0a',
-        'flake8>=2.6.0,<=3.7.7',
-        'numpy<=1.21.5',
-        'pandas<=1.3.5',
-        'pyhamcrest>=1.9.0,<2.0a',
-        'pytest>=6.2.5,<7',
-        'responses>=0.17.0,<1a',
-    ],
     extras_require={
         'pandas': [
-            'numpy<=1.21.5',
+            'numpy>=1.26.4,<=2.0a',
             'pandas<=1.3.5',
         ],
     },
diff --git a/tox.ini b/tox.ini
index 05f797a..31bac44 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,11 +1,18 @@
 [tox]
-envlist=py37,py38,py39
+envlist=py39,py310,py311,py312
 [testenv]
 deps=
-    coverage<=4.5.3
-    flake8<=3.7.7
+    coverage>=7.4.4,<8.0a
+    flake8>=2.6.0,<=3.7.7
+    doublex>=1.9.6.1,<2.0a
+    numpy>=1.26.4,<=2.0a
+    pandas>=2.2.1,<3.0a
+    pyhamcrest>=2.1.0,<3.0a
+    pytest>=8.1.1,<9.0a
+    responses>=0.25.0,<1.0a
+
 commands=
     flake8 . \
     --exclude=datadotworld/client/_swagger/,./.tox/*,./.eggs/*,./build/*,./docs/*,testing/*
-    coverage run setup.py test {posargs}
+    coverage run -m pytest
     coverage report --omit=./.tox/* --fail-under=90