diff --git a/math/mathmod/Makefile b/math/mathmod/Makefile
index c9138d81619b..fbcf4f1c6b0a 100644
--- a/math/mathmod/Makefile
+++ b/math/mathmod/Makefile
@@ -1,21 +1,21 @@
 PORTNAME=	MathMod
-PORTVERSION=	12.1
+PORTVERSION=	13.0
 CATEGORIES=	math graphics
 
 MAINTAINER=	thierry@FreeBSD.org
 COMMENT=	Mathematical modeling software
 WWW=		https://sourceforge.net/projects/mathmod/
 
 LICENSE=	GPLv2
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	parisolab
 GH_PROJECT=	${PORTNAME:tl}
 
 USES=		compiler:c++11-lang dos2unix gl qmake qt:5
 USE_GL=		gl
 USE_QT=		buildtools:build core gui opengl qmake:build widgets
 
 PLIST_FILES=	bin/${PORTNAME}
 
 .include <bsd.port.mk>
diff --git a/math/mathmod/distinfo b/math/mathmod/distinfo
index 4a63a2d66955..2c247f4066c3 100644
--- a/math/mathmod/distinfo
+++ b/math/mathmod/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1744369812
-SHA256 (parisolab-mathmod-12.1_GH0.tar.gz) = 13e99550a1982f7d06a3c82e46defa6221505682647488ba91b8e3d60698a443
-SIZE (parisolab-mathmod-12.1_GH0.tar.gz) = 9475468
+TIMESTAMP = 1761935042
+SHA256 (parisolab-mathmod-13.0_GH0.tar.gz) = b14fa6821d77550723f3bde134169b8a0eacb827cb8be63c68baf38b076864c1
+SIZE (parisolab-mathmod-13.0_GH0.tar.gz) = 9407320