diff --git a/dev-python/cssutils/cssutils-1.0.2-r2.ebuild b/dev-python/cssutils/cssutils-1.0.2-r2.ebuild
index 7b4f6a4808cbb..363407545582a 100644
--- a/dev-python/cssutils/cssutils-1.0.2-r2.ebuild
+++ b/dev-python/cssutils/cssutils-1.0.2-r2.ebuild
@@ -4,7 +4,7 @@
 EAPI=7
 
 DISTUTILS_USE_SETUPTOOLS=rdepend
-PYTHON_COMPAT=( python3_{6,7,8} )
+PYTHON_COMPAT=( python3_{6,7,8,9} )
 
 inherit distutils-r1