diff --git a/math/kamis/Makefile b/math/kamis/Makefile
index d33923150cca..b3d2b1ac49c9 100644
--- a/math/kamis/Makefile
+++ b/math/kamis/Makefile
@@ -1,31 +1,32 @@
 PORTNAME=	kamis
 DISTVERSIONPREFIX=	v
-DISTVERSION=	2.1
+DISTVERSION=	3.1
 CATEGORIES=	math
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Maximum independent sets and vertex covers of large sparse graphs
-WWW=		https://karlsruhemis.github.io/
+WWW=		https://karlsruhemis.github.io/ \
+		https://github.com/KarlsruheMIS/KaMIS
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 #BROKEN_armv7=	gcc13 fails: error: use of built-in trait '__remove_cvref(_InIter1)' in function signature, see https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=278630
 
 USES=		cmake
 USE_LDCONFIG=	yes
 
 .if !exists(/usr/include/omp.h)
 BROKEN=		requires OpenMP support that is missing on this architecture
 .endif
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	KarlsruheMIS
 GH_PROJECT=	KaMIS
 
 PLIST_FILES=	bin/graphchecker \
 		bin/online_mis \
 		bin/redumis \
 		bin/sort_adjacencies
 
 .include <bsd.port.mk>
diff --git a/math/kamis/distinfo b/math/kamis/distinfo
index fa6da1acdb1e..f9e5604056c1 100644
--- a/math/kamis/distinfo
+++ b/math/kamis/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1703096854
-SHA256 (KarlsruheMIS-KaMIS-v2.1_GH0.tar.gz) = 22a650ad7ff243f98f871d0e4c522977bd351f23583186d3fc1a1216350a6173
-SIZE (KarlsruheMIS-KaMIS-v2.1_GH0.tar.gz) = 782448
+TIMESTAMP = 1773533590
+SHA256 (KarlsruheMIS-KaMIS-v3.1_GH0.tar.gz) = c66bd13a1ab4739eef47d52df647d6527bdafe4f19b0fca9153ce74735b3adb7
+SIZE (KarlsruheMIS-KaMIS-v3.1_GH0.tar.gz) = 997309