diff --git a/pyproject.toml b/pyproject.toml
index 503aea1b9..f16b0d196 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,6 +32,7 @@ dev = [
     "pytest>=7.4.4",
     "pre-commit>=4.1.0",
     "tbump>=6.11.0",
+    "pydantic>=2.11,<3.0",
 ]
 
 # Workspace sources - tells UV where to find workspace packages
diff --git a/soda-core/setup.py b/soda-core/setup.py
deleted file mode 100644
index a64f613f5..000000000
--- a/soda-core/setup.py
+++ /dev/null
@@ -1,54 +0,0 @@
-#!/usr/bin/env python
-
-import sys
-
-from setuptools import setup
-
-if sys.version_info < (3, 9):
-    print("Error: soda-core requires at least Python 3.9")
-    print("Error: Please upgrade your Python version to 3.9 or later")
-    sys.exit(1)
-
-package_name = "soda-core"
-package_version = "4.0.5"
-description = "Soda Core V4"
-
-requires = [
-    "ruamel.yaml>=0.17.0,<0.18.0",
-    "requests>=2.32.3,<2.33.0",
-    "pydantic>=2.11,<3.0",
-    "opentelemetry-api>=1.16.0,<2.0.0",
-    "opentelemetry-exporter-otlp-proto-http>=1.16.0,<2.0.0",
-    "tabulate[widechars]",
-    "python-dotenv~=1.0",
-    "sqlglot",
-]
-
-setup(
-    name=package_name,
-    version=package_version,
-    install_requires=requires,
-    author="Soda Data N.V.",
-    author_email="info@soda.io",
-    description="Soda core library & CLI",
-    package_dir={"": "src"},
-    package_data={"": ["**/*.json"]},
-    include_package_data=True,
-    python_requires=">=3.9",
-    classifiers=[
-        "Development Status :: 5 - Production/Stable",
-        "License :: Other/Proprietary License",
-        "Operating System :: Microsoft :: Windows",
-        "Operating System :: MacOS :: MacOS X",
-        "Operating System :: POSIX :: Linux",
-        "Programming Language :: Python :: 3.10",
-    ],
-    entry_points={
-        "console_scripts": [
-            "soda=soda_core.cli.cli:execute",
-        ],
-        "soda.plugins.check_types.core": [
-            "CoreCheckTypes = soda_core.contracts.impl.check_types.check_types:CoreCheckTypesPlugin"
-        ],
-    },
-)