diff --git a/math/py-chaospy/Makefile b/math/py-chaospy/Makefile
index 6289dd626742..6956574c80b4 100644
--- a/math/py-chaospy/Makefile
+++ b/math/py-chaospy/Makefile
@@ -1,22 +1,25 @@
 PORTNAME=	chaospy
-DISTVERSION=	4.3.3
+DISTVERSION=	4.3.4
 CATEGORIES=	math python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Toolbox for performing uncertainty quantification
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
 RUN_DEPENDS=	${PYNUMPY} \
 		${PYTHON_PKGNAMEPREFIX}numpoly>=1.1.2:math/py-numpoly@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}scipy>0:science/py-scipy@${PY_FLAVOR}
 
 USES=		python:3.6+
 USE_PYTHON=	distutils autoplist
 
 NO_ARCH=	yes
 
+do-test: # tests fail: https://github.com/jonathf/chaospy/issues/366
+	@cd ${WRKSRC} && pytest --doctest-modules chaospy/
+
 .include <bsd.port.mk>
diff --git a/math/py-chaospy/distinfo b/math/py-chaospy/distinfo
index 01fb7464eba1..e78c64c1284e 100644
--- a/math/py-chaospy/distinfo
+++ b/math/py-chaospy/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1628193487
-SHA256 (chaospy-4.3.3.tar.gz) = 65accddd1998fc01b42e8a2066dcbf1260554baae3e292d9b607b2a6f5815c7f
-SIZE (chaospy-4.3.3.tar.gz) = 158930
+TIMESTAMP = 1641247224
+SHA256 (chaospy-4.3.4.tar.gz) = 67c9bbb14cd70acfe6d32cade0b09e664358148fc5169a6374c21c8a77f26db7
+SIZE (chaospy-4.3.4.tar.gz) = 158951