diff --git a/dev-python/klein/klein-20.6.0.ebuild b/dev-python/klein/klein-20.6.0.ebuild
index 43622c7d56f67..8a23e937e7cad 100644
--- a/dev-python/klein/klein-20.6.0.ebuild
+++ b/dev-python/klein/klein-20.6.0.ebuild
@@ -1,8 +1,8 @@
-# Copyright 1999-2020 Gentoo Authors
+# Copyright 1999-2021 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=7
-PYTHON_COMPAT=( python3_{7,8} )
+PYTHON_COMPAT=( python3_{7,8,9} )
 
 inherit distutils-r1