diff --git a/pyproject.toml b/pyproject.toml
index c670c950..37443486 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,7 @@ license = { text = "BSD" }
 authors = [
   { name = "Daniel Roy Greenfeld", email = "pydanny@gmail.com" },
 ]
-requires-python = ">=3.12"
+requires-python = ">=3.12,<3.13"
 classifiers = [
   "Development Status :: 4 - Beta",
   "Environment :: Console",
@@ -25,7 +25,6 @@ classifiers = [
   "Programming Language :: Python",
   "Programming Language :: Python :: 3 :: Only",
   "Programming Language :: Python :: 3.12",
-  "Programming Language :: Python :: 3.13",
   "Programming Language :: Python :: Implementation :: CPython",
   "Topic :: Software Development",
 ]
diff --git a/uv.lock b/uv.lock
index ed47daef..84927f15 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1,5 +1,5 @@
 version = 1
-requires-python = ">=3.12"
+requires-python = "==3.12.*"
 
 [[package]]
 name = "alabaster"