diff --git a/sys-cluster/hpx/hpx-1.0.0.ebuild b/sys-cluster/hpx/hpx-1.0.0.ebuild
index 93c3d5be3feb7..2f8924015c11b 100644
--- a/sys-cluster/hpx/hpx-1.0.0.ebuild
+++ b/sys-cluster/hpx/hpx-1.0.0.ebuild
@@ -4,7 +4,7 @@
 EAPI=6
 
 CMAKE_MAKEFILE_GENERATOR="ninja"
-PYTHON_COMPAT=( python{2_7,3_4} )
+PYTHON_COMPAT=( python{2_7,3_4,3_5} )
 
 if [ ${PV} == 9999 ] ; then
 	inherit git-r3
diff --git a/sys-cluster/hpx/hpx-9999.ebuild b/sys-cluster/hpx/hpx-9999.ebuild
index c7977e7361c51..9d7e3474956b5 100644
--- a/sys-cluster/hpx/hpx-9999.ebuild
+++ b/sys-cluster/hpx/hpx-9999.ebuild
@@ -4,7 +4,7 @@
 EAPI=6
 
 CMAKE_MAKEFILE_GENERATOR="ninja"
-PYTHON_COMPAT=( python{2_7,3_4} )
+PYTHON_COMPAT=( python{2_7,3_4,3_5} )
 
 if [ ${PV} == 9999 ] ; then
 	inherit git-r3