diff --git a/pyproject.toml b/pyproject.toml
index 9f23df59b..5d59c2572 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,6 +18,7 @@ classifiers = [
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
   "Programming Language :: Python :: Implementation :: PyPy",
   "Topic :: Software Development :: Libraries :: Python Modules",
   "Topic :: Utilities",