diff --git a/graphics/gmt/Makefile b/graphics/gmt/Makefile
index 21f2185fb5cf..2eee00fe76d2 100644
--- a/graphics/gmt/Makefile
+++ b/graphics/gmt/Makefile
@@ -1,45 +1,43 @@
 PORTNAME=	gmt
 DISTVERSION=	6.3.0
 CATEGORIES=	graphics
+MASTER_SITES=	https://github.com/GenericMappingTools/${PORTNAME}/releases/download/${DISTVERSION}/
+DISTNAME=	${PORTNAME}-${DISTVERSION}-src
 
 MAINTAINER=	lbartoletti@FreeBSD.org
 COMMENT=	Generic Mapping Tools - data processing and display software package
 
 LICENSE=	GPLv3 LGPL3
 LICENSE_COMB=	multi
 
 LIB_DEPENDS=	libnetcdf.so:science/netcdf \
 		libcurl.so:ftp/curl \
 		libpcre2-8.so:devel/pcre2 \
-		libfftw3f_threads.so:math/fftw3-float \
 		libgdal.so:graphics/gdal \
 		libgeos.so:graphics/geos
 RUN_DEPENDS=	bash:shells/bash \
 		GraphicsMagick>0:graphics/GraphicsMagick \
 		ffmpeg>0:multimedia/ffmpeg \
 		xdg-open:devel/xdg-utils \
 
 BUILD_DEPENDS=	${LOCALBASE}/share/dcw-gmt/dcw-gmt.nc:graphics/gmt-dcw \
 		${LOCALBASE}/share/gshhg-gmt/binned_GSHHS_c.nc:graphics/gmt-gshhg
 
-USES=		blaslapack cmake ghostscript:run shebangfix
-USE_GITHUB=	yes
+USES=		blaslapack cmake ghostscript:run shebangfix tar:xz
 USE_LDCONFIG=	yes
 
-GH_ACCOUNT=	GenericMappingTools
+WRKSRC=		${WRKDIR}/${PORTNAME}-${DISTVERSION}
 
 #SHEBANG_GLOB=	*.sh *.in
 #SHEBANG_FILES=	share/tools/ncdeflate src/img/img2google src/gmtswitch
 
-CMAKE_ARGS+=	-DCMAKE_BUILD_TYPE=RelWithDebInfo \
-		-DCMAKE_INSTALL_PREFIX=${PREFIX} \
-		-DDCW_ROOT=${LOCALBASE}/share/dcw-gmt \
+CMAKE_ARGS+=	-DDCW_ROOT=${LOCALBASE}/share/dcw-gmt \
 		-DCOPY_DCW=off \
 		-DGSHHG_ROOT=${LOCALBASE}/share/gshhg-gmt \
 		-DCOPY_GSHHG=off \
 		-DGMT_DATADIR=share/${PORTNAME} \
 		-DGMT_DOCDIR=share/doc/${PORTNAME} \
 		-DGMT_MANDIR=share/doc/${PORTNAME}/man \
 		-DGMT_EXCLUDE_PCRE=True
 
 .include <bsd.port.mk>
diff --git a/graphics/gmt/distinfo b/graphics/gmt/distinfo
index 76beb1d6f961..86f9e21dbded 100644
--- a/graphics/gmt/distinfo
+++ b/graphics/gmt/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1638713645
-SHA256 (GenericMappingTools-gmt-6.3.0_GH0.tar.gz) = 48712279da8228a7960f36fd4b7b04cc1a66489c37b2a5c03f8336a631aa3b24
-SIZE (GenericMappingTools-gmt-6.3.0_GH0.tar.gz) = 90110149
+TIMESTAMP = 1642348660
+SHA256 (gmt-6.3.0-src.tar.xz) = 69e29b62ee802a3a64260d6a1e023f1350e3bf4070221aa1307bf8a9e56c1ee5
+SIZE (gmt-6.3.0-src.tar.xz) = 55396792