diff --git a/science/ncrystal/Makefile b/science/ncrystal/Makefile
index b3d61ca6165d..daa3484255ac 100644
--- a/science/ncrystal/Makefile
+++ b/science/ncrystal/Makefile
@@ -1,26 +1,26 @@
 PORTNAME=	ncrystal
 DISTVERSIONPREFIX=	v
-DISTVERSION=	4.3.2
+DISTVERSION=	4.3.4
 CATEGORIES=	science # physics
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Library for thermal neutron transport in crystals and other materials
 WWW=		https://github.com/mctools/ncrystal
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 USES=		cmake:testing python:build,test shebangfix
 USE_LDCONFIG=	yes
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	mctools
 
 SHEBANG_FILES=	tests/scripts/*
 
 CMAKE_TESTING_ON=	NCRYSTAL_ENABLE_TESTING \
 			NCRYSTAL_ENABLE_CORE_TEST
 
-# tests as of 4.3.2: 100% tests passed, 0 tests failed out of 124
+# tests as of 4.3.4: 100% tests passed, 0 tests failed out of 124
 
 .include <bsd.port.mk>
diff --git a/science/ncrystal/distinfo b/science/ncrystal/distinfo
index 731892471bcd..dccabe677297 100644
--- a/science/ncrystal/distinfo
+++ b/science/ncrystal/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1776066333
-SHA256 (mctools-ncrystal-v4.3.2_GH0.tar.gz) = 738948ca23c6656683f373827a68e9d88ba10cca66c564331fb19b8493c8f756
-SIZE (mctools-ncrystal-v4.3.2_GH0.tar.gz) = 3118259
+TIMESTAMP = 1776323187
+SHA256 (mctools-ncrystal-v4.3.4_GH0.tar.gz) = 1479a068a278aa81a0dab04b889891691076cdfe472ae03f222caa46e2764cb2
+SIZE (mctools-ncrystal-v4.3.4_GH0.tar.gz) = 3119565
diff --git a/science/ncrystal/files/patch-tests_CMakeLists.txt b/science/ncrystal/files/patch-tests_CMakeLists.txt
deleted file mode 100644
index f5016d10bb8e..000000000000
--- a/science/ncrystal/files/patch-tests_CMakeLists.txt
+++ /dev/null
@@ -1,12 +0,0 @@
-- https://github.com/mctools/ncrystal/issues/348
-
---- tests/CMakeLists.txt.orig	2026-04-12 09:10:19 UTC
-+++ tests/CMakeLists.txt
-@@ -65,6 +65,7 @@ list(
- list(
-   APPEND nctest_pyenvmod
-   "NCRYSTAL_LIB=set:$<TARGET_FILE:${nctests_ncrystallib_target}>"
-+  "NCRYSTAL_LIB_NAMESPACE_PROTECTION=set:test"
- )
- 
- if ( NOT NCRYSTAL_ENABLE_DATA STREQUAL "EMBED" )
diff --git a/science/py-ncrystal/Makefile b/science/py-ncrystal/Makefile
index f218a553486a..1090f9ecfb73 100644
--- a/science/py-ncrystal/Makefile
+++ b/science/py-ncrystal/Makefile
@@ -1,39 +1,39 @@
 PORTNAME=	ncrystal
 DISTVERSIONPREFIX=	v
-DISTVERSION=	4.3.2
+DISTVERSION=	4.3.4
 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} \
 		${PYTHON_PKGNAMEPREFIX}numpy1>=1.16:math/py-numpy1@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}scikit-build-core>0:devel/py-scikit-build-core@${PY_FLAVOR} \
 		cmake:devel/cmake-core
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}numpy1>=1.16:math/py-numpy1@${PY_FLAVOR}
 
 USES=		python
 USE_PYTHON=	pep517 concurrent autoplist
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	mctools
 
 TEST_ENV=	${MAKE_ENV} \
 		PYTHONPATH=${STAGEDIR}${PYTHONPREFIX_SITELIBDIR} \
 		PATH=${STAGEDIR}${PREFIX}/bin:${PATH}
 #TEST_WRKSRC=	${WRKSRC}/ncrystal_python
 
 post-install:
 	# strip binary
 	#@${STRIP_CMD} ${STAGEDIR}${PYTHONPREFIX_SITELIBDIR}/NCrystal/ncrystal_pyinst_data/lib/libNCrystal.so
 
 do-test:
 	@cd ${TEST_WRKSRC} && \
 		${SETENV} ${TEST_ENV} ${PYTHON_CMD} -m NCrystal.test all
 
 .include <bsd.port.mk>
diff --git a/science/py-ncrystal/distinfo b/science/py-ncrystal/distinfo
index 403014d62506..d07f87caf816 100644
--- a/science/py-ncrystal/distinfo
+++ b/science/py-ncrystal/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1776066586
-SHA256 (mctools-ncrystal-v4.3.2_GH0.tar.gz) = 738948ca23c6656683f373827a68e9d88ba10cca66c564331fb19b8493c8f756
-SIZE (mctools-ncrystal-v4.3.2_GH0.tar.gz) = 3118259
+TIMESTAMP = 1776323174
+SHA256 (mctools-ncrystal-v4.3.4_GH0.tar.gz) = 1479a068a278aa81a0dab04b889891691076cdfe472ae03f222caa46e2764cb2
+SIZE (mctools-ncrystal-v4.3.4_GH0.tar.gz) = 3119565