diff --git a/benchmarks/iperf3/Makefile b/benchmarks/iperf3/Makefile
index 08fab7c54f64..b799b1b3f118 100644
--- a/benchmarks/iperf3/Makefile
+++ b/benchmarks/iperf3/Makefile
@@ -1,40 +1,41 @@
 PORTNAME=	iperf
 DISTVERSION=	3.20
+PORTREVISION=	1
 CATEGORIES=	benchmarks
 MASTER_SITES=	https://github.com/esnet/${PORTNAME}/releases/download/${DISTVERSION}/ \
 		https://downloads.es.net/pub/${PORTNAME}/
 PKGNAMESUFFIX=	3
 
 MAINTAINER=	bmah@FreeBSD.org
 COMMENT=	Improved tool to measure TCP and UDP bandwidth
 WWW=		https://software.es.net/iperf/
 
 LICENSE=	BSD3CLAUSE MIT
 LICENSE_COMB=	multi
 
 USES=		cpe libtool ssl
 CPE_VENDOR=	iperf_project
 USE_LDCONFIG=	yes
 
 GNU_CONFIGURE=	yes
 PORTDOCS=	README.md RELNOTES.md
 
 # Set ${DOCSDIR} to avoid conflict with benchmarks/iperf
 DOCSDIR=	${PREFIX}/share/doc/${PKGBASE}
 
 OPTIONS_DEFINE=	DOCS STATIC
 OPTIONS_SUB=	yes
 
 STATIC_CONFIGURE_ENABLE=	static
 
 post-patch:
 # Don't build stuff that we're not going to install.  Among other
 # things this means we're not going to try to build profiled objects
 # and/or executables.
 	@${REINPLACE_CMD} -e '/^PROGRAMS /s/\$$(noinst_PROGRAMS)//' ${WRKSRC}/src/Makefile.in
 
 post-install-DOCS-on:
 	@${MKDIR} ${STAGEDIR}${DOCSDIR}
 	(cd ${WRKSRC} && ${INSTALL_DATA} ${PORTDOCS} ${STAGEDIR}${DOCSDIR})
 
 .include <bsd.port.mk>
diff --git a/benchmarks/iperf3/files/patch-RELNOTES.md b/benchmarks/iperf3/files/patch-RELNOTES.md
new file mode 100644
index 000000000000..cb9a7c97d6ba
--- /dev/null
+++ b/benchmarks/iperf3/files/patch-RELNOTES.md
@@ -0,0 +1,18 @@
+diff --git a/RELNOTES.md b/RELNOTES.md
+index cf5bd19..5bb89a5 100644
+--- RELNOTES.md.orig
++++ RELNOTES.md
+@@ -30,10 +30,10 @@ releases, including iperf-3.19.1.
+       flag (PR #1903)
+ 
+     * Sends with `--zerocopy` are now properly seeded with data
+-      instead of being all-zeroes. (PR #1909)
++      instead of being all-zeroes. (PR #1949)
+ 
+-    * The `--time` flag is now allowed on the iperf3 server to impose
+-      a maximum duration on timed tests. (PR #1684, PR #1931)
++    * The `--server-max-duration` flag is now allowed on the iperf3 server to impose
++      a maximum duration on timed tests. (PR #1684)
+ 
+     * The `--rcv-timeout` flag is now ignored for `--bidir`
+       tests. This change prevents premature termination of