diff --git a/dev-python/sphinxcontrib-blockdiag/sphinxcontrib-blockdiag-1.5.5.ebuild b/dev-python/sphinxcontrib-blockdiag/sphinxcontrib-blockdiag-1.5.5.ebuild
index 42b6ceecd0d56..fca6bb924070d 100644
--- a/dev-python/sphinxcontrib-blockdiag/sphinxcontrib-blockdiag-1.5.5.ebuild
+++ b/dev-python/sphinxcontrib-blockdiag/sphinxcontrib-blockdiag-1.5.5.ebuild
@@ -2,7 +2,7 @@
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
-PYTHON_COMPAT=( python2_7 python3_4 )
+PYTHON_COMPAT=( python2_7 python3_{4,5,6} )
 
 inherit distutils-r1