diff --git a/audio/amsynth/Makefile b/audio/amsynth/Makefile
index 337d5e0ced3b..b4099a35d9b2 100644
--- a/audio/amsynth/Makefile
+++ b/audio/amsynth/Makefile
@@ -1,46 +1,50 @@
 PORTNAME=	amsynth
 DISTVERSION=	1.13.3
+PORTREVISION=	1
 CATEGORIES=	audio
 MASTER_SITES=	https://github.com/amsynth/amsynth/releases/download/release-${DISTVERSION}/
 
+PATCH_SITES=	https://github.com/${PORTNAME}/${PORTNAME}/commit/
+PATCHFILES=	6fb79100a6254220e5adc69a1428572539ecc377.patch:-p1 # Stop using namespace std; https://github.com/amsynth/amsynth/issues/233
+
 MAINTAINER=	eduardo@FreeBSD.org
 COMMENT=	Analog modelling software synth
 WWW=		https://amsynth.github.io/
 
 LICENSE=	GPLv2+
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 BUILD_DEPENDS=	dssi>0:audio/dssi \
 		lv2>0:audio/lv2
 LIB_DEPENDS=	libasound.so:audio/alsa-lib \
 		libfontconfig.so:x11-fonts/fontconfig \
 		libfreetype.so:print/freetype2 \
 		libharfbuzz.so:print/harfbuzz \
 		libjack.so:audio/jack \
 		liblash.so:audio/lash \
 		liblo.so:audio/liblo
 RUN_DEPENDS=	dssi>0:audio/dssi
 
 USES=		compiler:c++11-lang gettext-tools gmake gnome libtool localbase \
 		pkgconfig xorg
 USE_GNOME=	atk cairo gdkpixbuf2 glib20 gtk20 intltool pango
 USE_XORG=	x11
 GNU_CONFIGURE=	yes
 GNU_CONFIGURE_MANPREFIX=	${PREFIX}/share
 
 OPTIONS_DEFINE=		MANPAGES NLS
 OPTIONS_DEFAULT=	MANPAGES
 OPTIONS_SUB=		yes
 
 MANPAGES_BUILD_DEPENDS=		pandoc:textproc/hs-pandoc
 MANPAGES_CONFIGURE_WITH=	pandoc
 
 NLS_CONFIGURE_ENABLE=	nls
 
 post-install:
 	@${STRIP_CMD} ${STAGEDIR}${PREFIX}/lib/dssi/*.so \
 		${STAGEDIR}${PREFIX}/lib/dssi/amsynth_dssi/amsynth_dssi_gtk \
 		${STAGEDIR}${PREFIX}/lib/vst/amsynth_vst.so \
 		${STAGEDIR}${PREFIX}/lib/lv2/amsynth.lv2/*.so
 
 .include <bsd.port.mk>
diff --git a/audio/amsynth/distinfo b/audio/amsynth/distinfo
index 1f8139b90fa0..57d5a5dde50a 100644
--- a/audio/amsynth/distinfo
+++ b/audio/amsynth/distinfo
@@ -1,3 +1,5 @@
-TIMESTAMP = 1714165984
+TIMESTAMP = 1714642293
 SHA256 (amsynth-1.13.3.tar.gz) = 75f1056ffe18f3a0ee3af688c1019dc62abf1c7e2bd1c01cb45d2beb685fb8d0
 SIZE (amsynth-1.13.3.tar.gz) = 1641606
+SHA256 (6fb79100a6254220e5adc69a1428572539ecc377.patch) = 602bf735995f7c4b91735b6257262fff94e2da4c7895e75e6b8f381076e077e7
+SIZE (6fb79100a6254220e5adc69a1428572539ecc377.patch) = 19521