diff --git a/dev-python/mock/mock-3.0.5-r1.ebuild b/dev-python/mock/mock-3.0.5-r1.ebuild
index 105b0eb75595f..93258859435be 100644
--- a/dev-python/mock/mock-3.0.5-r1.ebuild
+++ b/dev-python/mock/mock-3.0.5-r1.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=6
 
-PYTHON_COMPAT=( python2_7 python3_{6,7,8} pypy3 )
+PYTHON_COMPAT=( python2_7 python3_{6,7,8,9} pypy3 )
 
 inherit distutils-r1