diff --git a/cad/symbiyosys/Makefile b/cad/symbiyosys/Makefile
index e726601dd5c0..a261edc6b9ce 100644
--- a/cad/symbiyosys/Makefile
+++ b/cad/symbiyosys/Makefile
@@ -1,26 +1,26 @@
 PORTNAME=	symbiyosys
 DISTVERSIONPREFIX=	v
-DISTVERSION=	0.65
+DISTVERSION=	0.66
 CATEGORIES=	cad
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	SymbiYosys (sby): Front-end for Yosys-based formal verification flows
 WWW=		https://yosyshq.readthedocs.io/projects/sby/en/latest/ \
 		https://github.com/YosysHQ/sby/
 
 LICENSE=	ISCL
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 RUN_DEPENDS=	yosys:cad/yosys
 
 USES=		gmake python shebangfix
 USE_GITHUB=	yes
 GH_ACCOUNT=	YosysHQ
 GH_PROJECT=	sby
 
 SHEBANG_FILES=	sbysrc/sby.py
 
 NO_ARCH=	yes
 NO_BUILD=	yes
 
 .include <bsd.port.mk>
diff --git a/cad/symbiyosys/distinfo b/cad/symbiyosys/distinfo
index e02ffa86f397..cbb47d2ff3ed 100644
--- a/cad/symbiyosys/distinfo
+++ b/cad/symbiyosys/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1778652631
-SHA256 (YosysHQ-sby-v0.65_GH0.tar.gz) = 84ca322a603005a612ab1c2a83864b3119e5b69d5521c1575bf2b6be127207f7
-SIZE (YosysHQ-sby-v0.65_GH0.tar.gz) = 178478
+TIMESTAMP = 1780414279
+SHA256 (YosysHQ-sby-v0.66_GH0.tar.gz) = d7d3e0a6476e748c9faf23b93b133ce9a79ce396fb37dbaeec855af2f85a0b8c
+SIZE (YosysHQ-sby-v0.66_GH0.tar.gz) = 178479