diff --git a/science/py-ncrystal/Makefile b/science/py-ncrystal/Makefile
index 30c4fcf6b840..b3349d1ca695 100644
--- a/science/py-ncrystal/Makefile
+++ b/science/py-ncrystal/Makefile
@@ -1,36 +1,38 @@
 PORTNAME=	ncrystal
 DISTVERSIONPREFIX=	v
 DISTVERSION=	3.7.1
+PORTREVISION=	1
 CATEGORIES=	science # physics
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Library for thermal neutron transport in crystals and other materials
 WWW=		https://mctools.github.io/ncrystal/
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BUILD_DEPENDS=	${PY_SETUPTOOLS} \
 		${PYNUMPY} \
 		${PYTHON_PKGNAMEPREFIX}scikit-build>0:devel/py-scikit-build@${PY_FLAVOR} \
 		cmake:devel/cmake-core
+RUN_DEPENDS=	${PYNUMPY}
 
 USES=		python
 USE_PYTHON=	pep517 autoplist
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	mctools
 
 POST_PLIST=	fix-plist
 
 post-install:
 	# delete scripts (they are installed by science/ncrystal)
 	@${RM} ${STAGEDIR}${PREFIX}/bin/*
 	# strip binary
 	@${STRIP_CMD} ${STAGEDIR}${PYTHONPREFIX_SITELIBDIR}/NCrystal/ncrystal_pyinst_data/lib/libNCrystal.so
 
 fix-plist: # see post-install
 	@${REINPLACE_CMD} -e "s|^bin/.*$$||" ${TMPPLIST}
 
 .include <bsd.port.mk>