diff --git a/dev-python/isoduration/isoduration-20.11.0-r1.ebuild b/dev-python/isoduration/isoduration-20.11.0-r1.ebuild
index 63110e7a158f3..8491a36a05149 100644
--- a/dev-python/isoduration/isoduration-20.11.0-r1.ebuild
+++ b/dev-python/isoduration/isoduration-20.11.0-r1.ebuild
@@ -4,7 +4,7 @@
 EAPI=8
 
 DISTUTILS_USE_PEP517=setuptools
-PYTHON_COMPAT=( python3_{9..11} pypy3 )
+PYTHON_COMPAT=( python3_{10..12} pypy3 )
 
 inherit distutils-r1