diff --git a/math/alglib/Makefile b/math/alglib/Makefile
index f70b2005295e..3eaf16141c6c 100644
--- a/math/alglib/Makefile
+++ b/math/alglib/Makefile
@@ -1,33 +1,33 @@
 PORTNAME=	alglib
-DISTVERSION=	3.20.0
+DISTVERSION=	4.00.0
 CATEGORIES=	math science
 MASTER_SITES=	https://www.alglib.net/translator/re/
 EXTRACT_SUFX=	.cpp.gpl.zip
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Numerical analysis and data processing library
 WWW=		https://www.alglib.net/
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/gpl3.txt
 
 USE_LDCONFIG=	yes
 WRKSRC=		${WRKDIR}/${PORTNAME}-cpp
 
 do-build:
 	cd ${WRKSRC}/src && \
 		${CXX} ${CXXFLAGS} -fPIC -Wl,-soname,lib${PORTNAME}.so.3 -shared -o lib${PORTNAME}.so.3 *.cpp
 
 do-install:
 	@${MKDIR} ${STAGEDIR}${PREFIX}/include/lib${PORTNAME}
 	${INSTALL_DATA} ${WRKSRC}/src/*.h ${STAGEDIR}${PREFIX}/include/lib${PORTNAME}
 	${INSTALL_LIB} ${WRKSRC}/src/lib${PORTNAME}.so.3 ${STAGEDIR}${PREFIX}/lib
 	@${LN} -s lib${PORTNAME}.so.3 ${STAGEDIR}${PREFIX}/lib/lib${PORTNAME}.so
 
 do-test:
 	@cd ${WRKSRC} && \
 		cd tests && \
 		${CXX} ${CXXFLAGS} test_c.cpp -I ${STAGEDIR}${LOCALBASE}/include/libalglib ${STAGEDIR}${LOCALBASE}/lib/lib${PORTNAME}.so && \
 		LD_PRELOAD=${STAGEDIR}${LOCALBASE}/lib/lib${PORTNAME}.so ./a.out
 
 .include <bsd.port.mk>
diff --git a/math/alglib/distinfo b/math/alglib/distinfo
index cfb36f565b62..0d1845b14191 100644
--- a/math/alglib/distinfo
+++ b/math/alglib/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1671756231
-SHA256 (alglib-3.20.0.cpp.gpl.zip) = 183690266b1f06cda052bc36e892aa899f9ef0784992f01e11579097e84dd330
-SIZE (alglib-3.20.0.cpp.gpl.zip) = 3338466
+TIMESTAMP = 1687053435
+SHA256 (alglib-4.00.0.cpp.gpl.zip) = f86a3c02f0182a943d4fe372b0415d965ca6a51894d3e73678b7d5eea0663887
+SIZE (alglib-4.00.0.cpp.gpl.zip) = 3435366