diff --git a/math/py-ipyopt/Makefile b/math/py-ipyopt/Makefile
index 4a1ca025144e..1939bd657999 100644
--- a/math/py-ipyopt/Makefile
+++ b/math/py-ipyopt/Makefile
@@ -1,31 +1,33 @@
 PORTNAME=	ipyopt
-DISTVERSION=	0.12.3
+DISTVERSION=	0.12.4
 CATEGORIES=	math python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Python interface to Ipopt
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 PY_DEPENDS=	${PYNUMPY} \
 		${PYTHON_PKGNAMEPREFIX}scipy>0:science/py-scipy@${PY_FLAVOR}
 BUILD_DEPENDS=	${PY_DEPENDS}
 LIB_DEPENDS=	libipopt.so:math/ipopt
 RUN_DEPENDS=	${PY_DEPENDS}
 TEST_DEPENDS=	py.test:devel/py-pytest@${PY_FLAVOR}
 
 USES=		compiler:c++17-lang pkgconfig python:3.6+
 USE_PYTHON=	distutils autoplist
 
 CXXFLAGS+=	$(pkg-config --cflags ipopt)
 
+TEST_ENV=      ${MAKE_ENV} PYTHONPATH=${STAGEDIR}${PYTHONPREFIX_SITELIBDIR}
+
 post-install:
 	@${STRIP_CMD} ${STAGEDIR}${PYTHON_SITELIBDIR}/${PORTNAME}/${PORTNAME}.cpython-*.so
 
-do-test: # tests fail: https://gitlab.com/g-braeunlich/ipyopt/-/issues/6
-	@cd ${WRKSRC} && pytest
+do-test:
+	@cd ${WRKSRC} && ${SETENV} ${TEST_ENV} pytest
 
 .include <bsd.port.mk>
diff --git a/math/py-ipyopt/distinfo b/math/py-ipyopt/distinfo
index 6cad3eb0abd6..6bc49589a3c0 100644
--- a/math/py-ipyopt/distinfo
+++ b/math/py-ipyopt/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1647815198
-SHA256 (ipyopt-0.12.3.tar.gz) = 67e73d1b8161bd1f49cf4a1b0d6bec13b8136ea3fd321938906266a37160b683
-SIZE (ipyopt-0.12.3.tar.gz) = 35718
+TIMESTAMP = 1654660427
+SHA256 (ipyopt-0.12.4.tar.gz) = e130a29d235a7fa1fb55df4bac60586f8c7c79df4c99bd1ad0ebc6e9e52c2c10
+SIZE (ipyopt-0.12.4.tar.gz) = 35464