diff --git a/dev-python/testtools/testtools-1.5.0.ebuild b/dev-python/testtools/testtools-1.5.0.ebuild
index 7094cbd3ac283..c18fc3d85cb2f 100644
--- a/dev-python/testtools/testtools-1.5.0.ebuild
+++ b/dev-python/testtools/testtools-1.5.0.ebuild
@@ -4,7 +4,7 @@
 
 EAPI=5
 
-PYTHON_COMPAT=( python2_7 python3_3 python3_4 pypy )
+PYTHON_COMPAT=( python2_7 python3_3 python3_4 pypy pypy3 )
 
 inherit distutils-r1