diff --git a/dev-python/nbformat/nbformat-4.3.0.ebuild b/dev-python/nbformat/nbformat-4.3.0.ebuild
index 1f93d46ff8acf..ce2bf5dea4e0f 100644
--- a/dev-python/nbformat/nbformat-4.3.0.ebuild
+++ b/dev-python/nbformat/nbformat-4.3.0.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=6
 
-PYTHON_COMPAT=( python2_7 python3_{4,5} )
+PYTHON_COMPAT=( python2_7 python3_{4,5,6} )
 PYTHON_REQ_USE='sqlite'
 
 inherit distutils-r1