diff --git a/devel/py-rtree/Makefile b/devel/py-rtree/Makefile
index 691e650e9f47..cbc8f67b6fba 100644
--- a/devel/py-rtree/Makefile
+++ b/devel/py-rtree/Makefile
@@ -1,27 +1,28 @@
 PORTNAME=	rtree
 PORTVERSION=	1.4.1
 CATEGORIES=	devel science python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 #DISTNAME=	Rtree-${PORTVERSION}
 
 MAINTAINER=	wen@FreeBSD.org
 COMMENT=	R-Tree Spatial Index For Python GIS
 WWW=		https://trac.gispython.org/projects/PCL/wiki/Rtree
 
 LICENSE=	LGPL21
 
 BUILD_DEPENDS=	${LOCALBASE}/include/spatialindex/SpatialIndex.h:devel/spatialindex \
+		${PYTHON_PKGNAMEPREFIX}packaging>=0:devel/py-packaging@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}wheel>=0.29.0:devel/py-wheel@${PY_FLAVOR}
 RUN_DEPENDS=	${LOCALBASE}/include/spatialindex/SpatialIndex.h:devel/spatialindex
 
 USES=		python
 USE_PYTHON=	autoplist distutils
 
 NO_ARCH=	yes
 
 post-extract:
 	${REINPLACE_CMD} -e 's#/usr/local#${LOCALBASE}#g' \
 		${WRKSRC}/setup.cfg
 
 .include <bsd.port.mk>