diff --git a/pyproject.toml b/pyproject.toml
index 01ed8866..d33f05a0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,7 +24,6 @@ classifiers = [
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
-  "Programming Language :: Python :: 3.13",
   "Topic :: System :: Distributed Computing",
 ]
 dynamic = [ "version" ]