diff --git a/astro/qmapshack/Makefile b/astro/qmapshack/Makefile
index 102ce9858873..a790f0f1fef1 100644
--- a/astro/qmapshack/Makefile
+++ b/astro/qmapshack/Makefile
@@ -1,31 +1,30 @@
 PORTNAME=	qmapshack
 DISTVERSIONPREFIX=	V_
-DISTVERSION=	1.19.0
-PORTREVISION=	1
+DISTVERSION=	1.20.0
 CATEGORIES=	astro
 
 MAINTAINER=	cmt@FreeBSD.org
 COMMENT=	Ultimate outdoor aficionado's tool
 WWW=		https://github.com/Maproom/qmapshack/
 
 LICENSE=	GPLv3+
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BUILD_DEPENDS=	vulkan-headers>0:graphics/vulkan-headers
 LIB_DEPENDS=	libalglib.so:math/alglib \
 		libgdal.so:graphics/gdal \
 		libproj.so:graphics/proj \
 		libquazip1-qt6.so:archivers/quazip@qt6 \
 		libroutino.so:astro/routino
 RUN_DEPENDS=	${LOCALBASE}/bin/bsdisks:sysutils/bsdisks
 
 USES=		cmake desktop-file-utils gl jpeg qt:6
 USE_GITHUB=	yes
 GH_ACCOUNT=	Maproom
 USE_GL=	gl
 USE_QT=		5compat base declarative positioning tools webchannel \
 		webengine
 
 OPTIONS_DEFINE=	DOCS
 
 .include <bsd.port.mk>
diff --git a/astro/qmapshack/distinfo b/astro/qmapshack/distinfo
index 24883b2f2a25..ac0de19852c7 100644
--- a/astro/qmapshack/distinfo
+++ b/astro/qmapshack/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1764503274
-SHA256 (Maproom-qmapshack-V_1.19.0_GH0.tar.gz) = b2dcdcc7ef66e80cfd6e0be9d8ee493e72f3c1bfffcc9f592d2fc4d4995847a6
-SIZE (Maproom-qmapshack-V_1.19.0_GH0.tar.gz) = 58382806
+TIMESTAMP = 1771261985
+SHA256 (Maproom-qmapshack-V_1.20.0_GH0.tar.gz) = 0a3b60e185e701a36d50e910c8d9ae5b780a1a770886ac15d4f7cc237fa49c24
+SIZE (Maproom-qmapshack-V_1.20.0_GH0.tar.gz) = 57605158
diff --git a/astro/qmapshack/files/patch-src_qmapshack_setup_CAppSetupLinux.cpp b/astro/qmapshack/files/patch-src_qmapshack_setup_CAppSetupLinux.cpp
new file mode 100644
index 000000000000..d0c37613fef8
--- /dev/null
+++ b/astro/qmapshack/files/patch-src_qmapshack_setup_CAppSetupLinux.cpp
@@ -0,0 +1,22 @@
+commit d1fe132b222794ca1587785a62e3d4e2485918ca
+Author: Christoph Moench-Tegeder <cmt@FreeBSD.org>
+
+    sighandler_t is a GNU extension
+    
+    use the corresponding FreeBSD extension sig_t
+
+diff --git src/qmapshack/setup/CAppSetupLinux.cpp src/qmapshack/setup/CAppSetupLinux.cpp
+index 028a55f5..cd856e36 100644
+--- src/qmapshack/setup/CAppSetupLinux.cpp
++++ src/qmapshack/setup/CAppSetupLinux.cpp
+@@ -29,6 +29,10 @@
+ #include "config.h"
+ #include "version.h"
+ 
++#if defined(Q_OS_FREEBSD)
++typedef sig_t sighandler_t;
++#endif
++
+ void CAppSetupLinux::initQMapShack() {
+   // setup gdal
+   prepareGdal("", "", "");
diff --git a/astro/qmapshack/files/patch-src_qmaptool_setup_CAppSetupLinux.cpp b/astro/qmapshack/files/patch-src_qmaptool_setup_CAppSetupLinux.cpp
new file mode 100644
index 000000000000..9e1a94c498a3
--- /dev/null
+++ b/astro/qmapshack/files/patch-src_qmaptool_setup_CAppSetupLinux.cpp
@@ -0,0 +1,22 @@
+commit a23da70dfce1212ef8399cca261a095bb472ea61
+Author: Christoph Moench-Tegeder <cmt@FreeBSD.org>
+
+    sighandler_t is a GNU extension
+    
+    use the correspondig FreeBSD extension sig_t
+
+diff --git src/qmaptool/setup/CAppSetupLinux.cpp src/qmaptool/setup/CAppSetupLinux.cpp
+index 19ebccfa..74563081 100644
+--- src/qmaptool/setup/CAppSetupLinux.cpp
++++ src/qmaptool/setup/CAppSetupLinux.cpp
+@@ -29,6 +29,10 @@
+ #include "config.h"
+ #include "version.h"
+ 
++#if defined(Q_OS_FREEBSD)
++typedef sig_t sighandler_t;
++#endif
++
+ void CAppSetupLinux::initQMapTool() {
+   // setup gdal
+   prepareGdal("", "", "");