diff --git a/science/py-arbor/Makefile b/science/py-arbor/Makefile
index 5154b6ba0c19..e572c73652f9 100644
--- a/science/py-arbor/Makefile
+++ b/science/py-arbor/Makefile
@@ -1,46 +1,47 @@
 PORTNAME=	arbor
 DISTVERSIONPREFIX=	v
 DISTVERSION=	0.10.1
 CATEGORIES=	science
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Multi-compartment neural network simulation library
 WWW=		https://arbor-sim.org/
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/../LICENSE
 
-BUILD_DEPENDS=	pybind11>0:devel/pybind11 \
+BUILD_DEPENDS=	gmake:devel/gmake \
+		pybind11>0:devel/pybind11 \
 		nlohmann-json>0:devel/nlohmann-json
 LIB_DEPENDS=	libarbor.so:science/arbor
 
 USES=		cmake compiler:c++17-lang localbase:ldflags python
 USE_PYTHON=	flavors pytest # tests fail to run, see https://github.com/arbor-sim/arbor/issues/2395
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	arbor-sim
 
 WRKSRC_SUBDIR=	python
 
 CMAKE_ARGS=	-DPython3_EXECUTABLE=${PYTHON_CMD} \
 		-DARB_PYTHON_LIB_PATH=${PYTHONPREFIX_SITELIBDIR}
 
 CXXFLAGS+=	-fPIC
 
 TEST_WRKSRC=	${WRKSRC}/test/unit_distributed
 TEST_ENV=	${MAKE_ENV} PYTHONPATH=${STAGEDIR}${PYTHONPREFIX_SITELIBDIR}
 
 BINARY_ALIAS=	make=${GMAKE}
 
 post-patch:
 	@${ECHO} ${DISTVERSION} > ${WRKSRC}/VERSION
 
 post-install:
 	@${STRIP_CMD} ${STAGEDIR}${PYTHON_SITELIBDIR}/arbor/_arbor${PYTHON_EXT_SUFFIX}.so
 
 do-test: # some tests fail with 'make'-related errors
 	@cd ${BUILD_WRKSRC} && \
 		${SETENV} ${TEST_ENV} ${PYTHON_CMD} -munittest discover -v -s ${WRKSRC}
 
 .include <bsd.port.mk>