diff --git a/science/libcint/Makefile b/science/libcint/Makefile
index af528fdf2ec6..030c5de31ee3 100644
--- a/science/libcint/Makefile
+++ b/science/libcint/Makefile
@@ -1,42 +1,43 @@
 PORTNAME=	libcint
 DISTVERSIONPREFIX=	v
-DISTVERSION=	6.1.2
-PORTREVISION=	2
+DISTVERSION=	6.1.3
 CATEGORIES=	science
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	General GTO integrals for quantum chemistry
 WWW=		https://github.com/sunqm/libcint
 
 LICENSE=	BSD2CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 TEST_DEPENDS=	${PYNUMPY} \
 		${PYTHON_PKGNAMEPREFIX}pyscf>0:science/py-pyscf@${PY_FLAVOR}
 
 USES=		cmake blaslapack:openblas python:test
 USE_LDCONFIG=	yes
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	sunqm
 
 PLIST_FILES=	include/cint.h \
 		include/cint_funcs.h \
 		lib/libcint.so \
 		lib/libcint.so.${PORTVERSION:R:R} \
-		lib/libcint.so.6.1.1 # see https://github.com/sunqm/libcint/issues/106
+		lib/libcint.so.${PORTVERSION}
 		#lib/libcint.so.${PORTVERSION}
 
 post-patch:
 	@${REINPLACE_CMD} -e "s|\\.\\./\\.\\./build/libcint\\.so|${BUILD_WRKSRC}/libcint.so|" \
 		${WRKSRC}/testsuite/test_3c2e.py
 	@${REINPLACE_CMD} -e "s|os\\.path\\.abspath(os\\.path\\.join(__file__, '\\.\\./\\.\\./build/libcint\\.so'))|'${BUILD_WRKSRC}/libcint.so'|" \
 		${WRKSRC}/testsuite/test_cint.py
 
 do-test: # needs science/py-pyscf, pending https://github.com/pyscf/pyscf/issues/935
 	@cd ${BUILD_WRKSRC} && \
 		${SETENV} ${CONFIGURE_ENV} ${CMAKE_BIN} ${CMAKE_ARGS} -DENABLE_TEST:BOOL=ON ${CMAKE_SOURCE_PATH} && \
 		${SETENV} ${MAKE_ENV} ${MAKE_CMD} ${MAKE_ARGS} ${ALL_TARGET} && \
 		${SETENV} ${MAKE_ENV} ${MAKE_CMD} ${MAKE_ARGS} test
 
+# tests as of 6.1.3: 100% tests passed, 0 tests failed out of 2
+
 .include <bsd.port.mk>
diff --git a/science/libcint/distinfo b/science/libcint/distinfo
index 947086b18216..c2d4cf4a3f83 100644
--- a/science/libcint/distinfo
+++ b/science/libcint/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1710384136
-SHA256 (sunqm-libcint-v6.1.2_GH0.tar.gz) = 8287e1eaf2b8c8e19eb7a8ea92fd73898f0884023c503b84624610400adb25c4
-SIZE (sunqm-libcint-v6.1.2_GH0.tar.gz) = 50862041
+TIMESTAMP = 1755587717
+SHA256 (sunqm-libcint-v6.1.3_GH0.tar.gz) = e4d977d4aeb4d5b87639ea57a2d2f1d5c1001f3f94e480b08c297a6cbc186f27
+SIZE (sunqm-libcint-v6.1.3_GH0.tar.gz) = 50867546
diff --git a/science/libcint/files/patch-src_c2f.h b/science/libcint/files/patch-src_c2f.h
deleted file mode 100644
index b7d3deccc865..000000000000
--- a/science/libcint/files/patch-src_c2f.h
+++ /dev/null
@@ -1,10 +0,0 @@
---- src/c2f.h.orig	2018-03-21 00:24:56 UTC
-+++ src/c2f.h
-@@ -4,6 +4,7 @@
-  */
- 
- #include "config.h"
-+#include <sys/types.h>
- 
- #define ALL_CINT_FORTRAN_(NAME) \
- int c##NAME##_sph_(double *out, int *shls, int *atm, int *natm, \