diff --git a/pyproject.toml b/pyproject.toml
index 78040063bc..bc4dd7b060 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,6 +22,7 @@ classifiers = [
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
     "Typing :: Typed",
 ]
 include = [