diff --git a/math/octave-forge-biosig/Makefile b/math/octave-forge-biosig/Makefile
index cbf43cab3791..25dce241def1 100644
--- a/math/octave-forge-biosig/Makefile
+++ b/math/octave-forge-biosig/Makefile
@@ -1,31 +1,31 @@
 PORTNAME=	octave-forge-biosig
-DISTVERSION=	2.4.3
+DISTVERSION=	3.0.1
 CATEGORIES=	math
 MASTER_SITES=	https://pub.ist.ac.at/~schloegl/biosig/prereleases/
 DISTNAME=	biosig4octave-${DISTVERSION}.src
 
 MAINTAINER=	stephen@FreeBSD.org
 COMMENT=	Octave-forge package ${OCTAVE_PKGNAME}
 WWW=		http://octave.sourceforge.net/
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKDIR}/${OCTSRC}/COPYING
 
 LIB_DEPENDS+=	libbiosig.so:biology/biosig
 
 ALL_TARGET=	# nada
 
 # OCTSRC is the name of the directory of the package.
 # It is usually ${OCTAVE_PKGNAME} or ${DISTNAME}.
 
 OCTSRC=		${DISTNAME:R}
 
 WRKSRC=		${WRKDIR}/${OCTSRC}/src
 
 .include "${.CURDIR}/../../Mk/bsd.octave.mk"
 
 post-build:
 	${RM} ${WRKSRC}/Makefile ${WRKSRC}/configure
 	cd ${WRKDIR} && ${TAR} cfz ${OCTAVE_DISTNAME}.tar.gz ${OCTSRC}
 
 .include <bsd.port.mk>
diff --git a/math/octave-forge-biosig/distinfo b/math/octave-forge-biosig/distinfo
index 3a007f3e6057..48b9252ea6f3 100644
--- a/math/octave-forge-biosig/distinfo
+++ b/math/octave-forge-biosig/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1666806158
-SHA256 (octave-forge/biosig4octave-2.4.3.src.tar.gz) = 4d415c6548dc600c525663f977e54d78207087406910091767903d91473b5fec
-SIZE (octave-forge/biosig4octave-2.4.3.src.tar.gz) = 1551350
+TIMESTAMP = 1666992049
+SHA256 (octave-forge/biosig4octave-3.0.1.src.tar.gz) = 0ad89f03fa7e63e1ee9449322c247b03b48a951e64e8c5df13f372e1afb8c8d9
+SIZE (octave-forge/biosig4octave-3.0.1.src.tar.gz) = 1403188
diff --git a/math/octave-forge-biosig/files/patch-mexSSAVE.cpp b/math/octave-forge-biosig/files/patch-mexSSAVE.cpp
new file mode 100644
index 000000000000..b7e987b7bb31
--- /dev/null
+++ b/math/octave-forge-biosig/files/patch-mexSSAVE.cpp
@@ -0,0 +1,11 @@
+--- mexSSAVE.cpp.orig	2022-10-28 21:23:00 UTC
++++ mexSSAVE.cpp
+@@ -202,7 +202,7 @@ void mexFunction(
+ 	if ( (p = mxGetField(prhs[0], 0, "tzmin") ) != NULL )
+ 		hdr->tzmin 	= (int16_t)getDouble(p, 0);
+ 	else
+-		hdr->tzmin	= -timezone/60;
++		hdr->tzmin	= -localtime(0)->tm_gmtoff/60;
+ 	if ( (p = mxGetField(prhs[0], 0, "FileName") ) != NULL ) 	FileName 	= mxArrayToString(p);
+ 	if ( (p = mxGetField(prhs[0], 0, "SampleRate") ) != NULL ) 	hdr->SampleRate = getDouble(p, 0);
+ 	if ( (p = mxGetField(prhs[0], 0, "NS") ) != NULL )	 	hdr->NS         = getDouble(p, 0);