diff --git a/science/mopac/Makefile b/science/mopac/Makefile
index f20bac3c6179..6ca883423d0f 100644
--- a/science/mopac/Makefile
+++ b/science/mopac/Makefile
@@ -1,33 +1,32 @@
 PORTNAME=	mopac
 DISTVERSIONPREFIX=	v
-DISTVERSION=	22.1.1
-PORTREVISION=	1
+DISTVERSION=	23.0.0
 PORTEPOCH=	1
 CATEGORIES=	science # chemistry
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Semi-empirical (MNDO, etc.) molecular orbital calculation
 WWW=		http://openmopac.net/
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 TEST_DEPENDS=	${PYNUMPY}
 
 USES=		blaslapack:openblas cmake:testing fortran python:test
 USE_LDCONFIG=	yes
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	openmopac
 
 CMAKE_OFF=	TESTS
 CMAKE_TESTING_ON=	TESTS
 CMAKE_ARGS=	-DPython3_EXECUTABLE=${PYTHON_CMD} #-DPython3_NumPy_INCLUDE_DIRS=${PYTHONPREFIX_SITELIBDIR}/numpy/core/include
 
 PLIST_FILES=	bin/mopac \
 		bin/mopac-makpol \
 		bin/mopac-param \
 		lib/libmopac.so \
-		lib/libmopac.so.1
+		lib/libmopac.so.2
 
 .include <bsd.port.mk>
diff --git a/science/mopac/distinfo b/science/mopac/distinfo
index e996b80a5a06..fe0799bcd653 100644
--- a/science/mopac/distinfo
+++ b/science/mopac/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1706589989
-SHA256 (openmopac-mopac-v22.1.1_GH0.tar.gz) = b64894e3cacf5b63185671933637ef26ef7ec7ca4af19d1f429adfeb46b8dd9c
-SIZE (openmopac-mopac-v22.1.1_GH0.tar.gz) = 16948923
+TIMESTAMP = 1731323365
+SHA256 (openmopac-mopac-v23.0.0_GH0.tar.gz) = 4e2381144f417352def26afee18c3e85dfafa37904ed643abe4dea6c995624b7
+SIZE (openmopac-mopac-v23.0.0_GH0.tar.gz) = 16983379