diff --git a/cad/iverilog/Makefile b/cad/iverilog/Makefile
index 7a2961825e9a..e8a204a8a3ed 100644
--- a/cad/iverilog/Makefile
+++ b/cad/iverilog/Makefile
@@ -1,21 +1,22 @@
 PORTNAME=	iverilog
-DISTVERSION=	12.0
-PORTREVISION=	2
+PORTVERSION=	13.0
 CATEGORIES=	cad
-MASTER_SITES=	SF/${PORTNAME}/${PORTNAME}/${DISTVERSION}
-DISTNAME=	verilog-${DISTVERSION}
 
 MAINTAINER=	kbowling@FreeBSD.org
 COMMENT=	Verilog simulation and synthesis tool
 WWW=		https://steveicarus.github.io/iverilog/
 
 LICENSE=	GPLv2
 
 BUILD_DEPENDS=	gperf:devel/gperf
 
 USES=		bison compiler:c++11-lang gmake readline
 
+USE_GITHUB=	yes
+GH_ACCOUNT=	steveicarus
+GH_TAGNAME=	v13_0
+
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--disable-suffix
 
 .include <bsd.port.mk>
diff --git a/cad/iverilog/distinfo b/cad/iverilog/distinfo
index c94c3b27a23c..4580ed2facbb 100644
--- a/cad/iverilog/distinfo
+++ b/cad/iverilog/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1757814677
-SHA256 (verilog-12.0.tar.gz) = 03848551a9c5ec390fefcff1bbcca14765c7aa035ee85bc9cbcb0424e0149fd4
-SIZE (verilog-12.0.tar.gz) = 3334697
+TIMESTAMP = 1772820908
+SHA256 (steveicarus-iverilog-13.0-v13_0_GH0.tar.gz) = c897bbfa9848688982c6d5c30529fc29d68df0b9ff22ffa73bad89db73a7ce49
+SIZE (steveicarus-iverilog-13.0-v13_0_GH0.tar.gz) = 3215392
diff --git a/cad/iverilog/pkg-plist b/cad/iverilog/pkg-plist
index 3d44dc586cd6..59adfff3fe4f 100644
--- a/cad/iverilog/pkg-plist
+++ b/cad/iverilog/pkg-plist
@@ -1,51 +1,49 @@
 bin/iverilog
 bin/iverilog-vpi
 bin/vvp
 include/iverilog/_pli_types.h
 include/iverilog/acc_user.h
 include/iverilog/ivl_target.h
 include/iverilog/sv_vpi_user.h
 include/iverilog/veriuser.h
 include/iverilog/vpi_user.h
 lib/ivl/blif-s.conf
 lib/ivl/blif.conf
 lib/ivl/blif.tgt
-lib/ivl/cadpli.vpl
 lib/ivl/include/constants.vams
 lib/ivl/include/disciplines.vams
 lib/ivl/ivl
 lib/ivl/ivlpp
 lib/ivl/null-s.conf
 lib/ivl/null.conf
 lib/ivl/null.tgt
 lib/ivl/pcb-s.conf
 lib/ivl/pcb.conf
 lib/ivl/pcb.tgt
 lib/ivl/sizer-s.conf
 lib/ivl/sizer.conf
 lib/ivl/sizer.tgt
 lib/ivl/stub-s.conf
 lib/ivl/stub.conf
 lib/ivl/stub.tgt
 lib/ivl/system.vpi
 lib/ivl/vlog95-s.conf
 lib/ivl/vlog95.conf
 lib/ivl/vlog95.tgt
 lib/ivl/vpi_debug.vpi
 lib/ivl/v2005_math.vpi
 lib/ivl/v2009.vpi
 lib/ivl/va_math.vpi
 lib/ivl/vhdl-s.conf
 lib/ivl/vhdl_sys.vpi
 lib/ivl/vhdl_textio.vpi
 lib/ivl/vhdl.conf
 lib/ivl/vhdl.tgt
 lib/ivl/vhdlpp
 lib/ivl/vvp-s.conf
 lib/ivl/vvp.conf
 lib/ivl/vvp.tgt
-lib/libveriuser.a
 lib/libvpi.a
 share/man/man1/iverilog.1.gz
 share/man/man1/iverilog-vpi.1.gz
 share/man/man1/vvp.1.gz