diff --git a/devel/py-hyperscan/Makefile b/devel/py-hyperscan/Makefile
index e35aebb65f86..1c81ccbd5bb9 100644
--- a/devel/py-hyperscan/Makefile
+++ b/devel/py-hyperscan/Makefile
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.4 2018/10/10 15:41:16 minskim Exp $
+# $NetBSD: Makefile,v 1.5 2018/12/27 16:04:08 joerg Exp $
 
 DISTNAME=	hyperscan-0.0.2
 PKGNAME=	${PYPKGPREFIX}-${DISTNAME}
@@ -14,6 +14,7 @@ USE_LANGUAGES=	c
 USE_TOOLS+=	pkg-config
 
 BUILD_DEPENDS+=	${PYPKGPREFIX}-setuptools_scm>=1.11.1:../../devel/py-setuptools_scm
+BUILD_DEPENDS+=	${PYPKGPREFIX}-six-[0-9]*:../../lang/py-six
 
 .include "../../devel/hyperscan/buildlink3.mk"
 .include "../../lang/python/egg.mk"