diff --git a/pyproject.toml b/pyproject.toml
index 9e9920171..3664e4805 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,7 +22,7 @@ classifiers = [
     "Intended Audience :: System Administrators",
     "Natural Language :: English",
     "Programming Language :: Python",
-    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3 :: Only",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",