diff --git a/pyproject.toml b/pyproject.toml
index 6f12720..a8443b2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,7 +22,11 @@ classifiers = [
     "Operating System :: Microsoft :: Windows",
     "Operating System :: POSIX :: Linux",
     "Operating System :: MacOS",
-    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "Topic :: Software Development :: Build Tools",
 ]
 dynamic = ["version"]