diff --git a/math/octave-forge-biosig/Makefile b/math/octave-forge-biosig/Makefile
index 2fcbbd5208e8..9ab969825a4e 100644
--- a/math/octave-forge-biosig/Makefile
+++ b/math/octave-forge-biosig/Makefile
@@ -1,23 +1,22 @@
 PORTNAME=	octave-forge-biosig
-DISTVERSION=	3.0.1
-PORTREVISION=	6
+DISTVERSION=	3.9.4
 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=		https://packages.octave.org/
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKDIR}/${OCTAVE_SRC}/COPYING
 
 LIB_DEPENDS+=	libbiosig.so:biology/biosig
 
 USES=		octave
 
 ALL_TARGET=	# nada
 
 OCTAVE_SRC=		${DISTNAME:R}
 
 .include <bsd.port.mk>
diff --git a/math/octave-forge-biosig/distinfo b/math/octave-forge-biosig/distinfo
index 48b9252ea6f3..9fca61f832bd 100644
--- a/math/octave-forge-biosig/distinfo
+++ b/math/octave-forge-biosig/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1666992049
-SHA256 (octave-forge/biosig4octave-3.0.1.src.tar.gz) = 0ad89f03fa7e63e1ee9449322c247b03b48a951e64e8c5df13f372e1afb8c8d9
-SIZE (octave-forge/biosig4octave-3.0.1.src.tar.gz) = 1403188
+TIMESTAMP = 1773195004
+SHA256 (octave-forge/biosig4octave-3.9.4.src.tar.gz) = 14766ef1e73fabb6d97e996d6dd1ae40cdc8726642bb9dd23ed959c511b7d8e7
+SIZE (octave-forge/biosig4octave-3.9.4.src.tar.gz) = 1441981
diff --git a/math/octave-forge-biosig/files/patch-mexSSAVE.cpp b/math/octave-forge-biosig/files/patch-mexSSAVE.cpp
deleted file mode 100644
index 2cc834af1bd2..000000000000
--- a/math/octave-forge-biosig/files/patch-mexSSAVE.cpp
+++ /dev/null
@@ -1,19 +0,0 @@
---- mexSSAVE.cpp.orig	2021-07-14 20:07:43 UTC
-+++ mexSSAVE.cpp
-@@ -87,6 +87,7 @@ void mexFunction(
- 	HDRTYPE		*hdr;
- 	size_t 		count;
- 	time_t 		T0;
-+	time_t		zero = 0;
- 	char 		*FileName;  
- 	char 		tmpstr[128];  
- 	int 		status; 
-@@ -202,7 +203,7 @@ 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(&zero)->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);