diff --git a/pyproject.toml b/pyproject.toml
index b18be09..1829a98 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,7 +22,7 @@ classifiers = [
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
-  "Programming Language :: Python :: 3.3",
+  "Programming Language :: Python :: 3.13",
   "Topic :: Utilities",
 ]
 name = "akismet"