diff --git a/devel/libsigc++30/Makefile b/devel/libsigc++30/Makefile
index b0b157fa8ec6..a749074d045a 100644
--- a/devel/libsigc++30/Makefile
+++ b/devel/libsigc++30/Makefile
@@ -1,23 +1,23 @@
 PORTNAME=	libsigc++
-PORTVERSION=	3.6.0
+DISTVERSION=	3.8.0
 CATEGORIES=	devel
-MASTER_SITES=	GNOME
+MASTER_SITES=	https://github.com/libsigcplusplus/libsigcplusplus/releases/download/${DISTVERSION}/
 PKGNAMESUFFIX=	30
 
 MAINTAINER=	gnome@FreeBSD.org
 COMMENT=	Callback Framework for C++
 WWW=		https://libsigcplusplus.github.io/libsigcplusplus/index.html
 
-LICENSE=	LGPL21+
+LICENSE=	LGPL3+
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 USES=		compiler:c++17-lang gnome meson pkgconfig python:build tar:xz
 USE_GNOME=	libxslt:build
 USE_LDCONFIG=	yes
 
 MESON_ARGS=	-Dbuild-documentation=false \
 		-Dbuild-examples=false
 
 PLIST_SUB=	API_VERSION="3.0"
 
 .include <bsd.port.mk>
diff --git a/devel/libsigc++30/distinfo b/devel/libsigc++30/distinfo
index 21a4607e2817..f578ef346083 100644
--- a/devel/libsigc++30/distinfo
+++ b/devel/libsigc++30/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1741618983
-SHA256 (libsigc++-3.6.0.tar.xz) = c3d23b37dfd6e39f2e09f091b77b1541fbfa17c4f0b6bf5c89baef7229080e17
-SIZE (libsigc++-3.6.0.tar.xz) = 991392
+TIMESTAMP = 1766087474
+SHA256 (libsigc++-3.8.0.tar.xz) = 502a743bb07ed7627dd41bd85ec4b93b4954f06b531adc45818d24a959f54e36
+SIZE (libsigc++-3.8.0.tar.xz) = 995564
diff --git a/devel/libsigc++30/pkg-plist b/devel/libsigc++30/pkg-plist
index 6e19a47b5643..63aee1de93c1 100644
--- a/devel/libsigc++30/pkg-plist
+++ b/devel/libsigc++30/pkg-plist
@@ -1,46 +1,47 @@
 include/sigc++-%%API_VERSION%%/sigc++/adaptors/adaptor_base.h
 include/sigc++-%%API_VERSION%%/sigc++/adaptors/adaptor_trait.h
 include/sigc++-%%API_VERSION%%/sigc++/adaptors/adaptors.h
 include/sigc++-%%API_VERSION%%/sigc++/adaptors/adapts.h
 include/sigc++-%%API_VERSION%%/sigc++/adaptors/bind.h
 include/sigc++-%%API_VERSION%%/sigc++/adaptors/bind_return.h
 include/sigc++-%%API_VERSION%%/sigc++/adaptors/bound_argument.h
 include/sigc++-%%API_VERSION%%/sigc++/adaptors/compose.h
 include/sigc++-%%API_VERSION%%/sigc++/adaptors/exception_catch.h
 include/sigc++-%%API_VERSION%%/sigc++/adaptors/hide.h
 include/sigc++-%%API_VERSION%%/sigc++/adaptors/retype.h
 include/sigc++-%%API_VERSION%%/sigc++/adaptors/retype_return.h
 include/sigc++-%%API_VERSION%%/sigc++/adaptors/track_obj.h
 include/sigc++-%%API_VERSION%%/sigc++/adaptors/tuple_visitor_visit_each.h
 include/sigc++-%%API_VERSION%%/sigc++/bind.h
 include/sigc++-%%API_VERSION%%/sigc++/bind_return.h
 include/sigc++-%%API_VERSION%%/sigc++/connection.h
 include/sigc++-%%API_VERSION%%/sigc++/functors/functor_trait.h
 include/sigc++-%%API_VERSION%%/sigc++/functors/functors.h
 include/sigc++-%%API_VERSION%%/sigc++/functors/mem_fun.h
 include/sigc++-%%API_VERSION%%/sigc++/functors/ptr_fun.h
 include/sigc++-%%API_VERSION%%/sigc++/functors/slot.h
 include/sigc++-%%API_VERSION%%/sigc++/functors/slot_base.h
 include/sigc++-%%API_VERSION%%/sigc++/limit_reference.h
 include/sigc++-%%API_VERSION%%/sigc++/member_method_trait.h
 include/sigc++-%%API_VERSION%%/sigc++/reference_wrapper.h
 include/sigc++-%%API_VERSION%%/sigc++/retype_return.h
 include/sigc++-%%API_VERSION%%/sigc++/scoped_connection.h
 include/sigc++-%%API_VERSION%%/sigc++/sigc++.h
 include/sigc++-%%API_VERSION%%/sigc++/signal.h
 include/sigc++-%%API_VERSION%%/sigc++/signal_base.h
+include/sigc++-%%API_VERSION%%/sigc++/signal_connect.h
 include/sigc++-%%API_VERSION%%/sigc++/slot.h
 include/sigc++-%%API_VERSION%%/sigc++/trackable.h
 include/sigc++-%%API_VERSION%%/sigc++/tuple-utils/tuple_cdr.h
 include/sigc++-%%API_VERSION%%/sigc++/tuple-utils/tuple_end.h
 include/sigc++-%%API_VERSION%%/sigc++/tuple-utils/tuple_for_each.h
 include/sigc++-%%API_VERSION%%/sigc++/tuple-utils/tuple_start.h
 include/sigc++-%%API_VERSION%%/sigc++/tuple-utils/tuple_transform_each.h
 include/sigc++-%%API_VERSION%%/sigc++/type_traits.h
 include/sigc++-%%API_VERSION%%/sigc++/visit_each.h
 include/sigc++-%%API_VERSION%%/sigc++/weak_raw_ptr.h
 lib/libsigc-%%API_VERSION%%.so
 lib/libsigc-%%API_VERSION%%.so.0
 lib/libsigc-%%API_VERSION%%.so.0.0.0
 lib/sigc++-%%API_VERSION%%/include/sigc++config.h
 libdata/pkgconfig/sigc++-%%API_VERSION%%.pc