diff --git a/autoconf/__init__.py b/autoconf/__init__.py
index 9841531..18de095 100644
--- a/autoconf/__init__.py
+++ b/autoconf/__init__.py
@@ -1,3 +1,11 @@
+import sys
+
+if sys.version_info < (3, 12):
+    raise RuntimeError(
+        f"PyAutoConf requires Python 3.12 or later. "
+        f"You are running Python {sys.version_info.major}.{sys.version_info.minor}."
+    )
+
 from . import jax_wrapper
 from . import exc
 from .tools.decorators import cached_property
diff --git a/pyproject.toml b/pyproject.toml
index 2b79f57..bd1642d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,7 +18,7 @@ classifiers = [
   "Topic :: Scientific/Engineering :: Physics",
   "Natural Language :: English",
   "Operating System :: OS Independent",
-  "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13"
 ]
 keywords = ["cli"]
@@ -33,7 +33,7 @@ dependencies = [
 ]
 
 [project.urls]
-Homepage = "https://github.com/rhayes777/PyAutoConf"
+Homepage = "https://github.com/PyAutoLabs/PyAutoConf"
 
 [tool.setuptools]
 include-package-data = true