diff --git a/lang/chez-scheme/Makefile b/lang/chez-scheme/Makefile
index e2352f85abe2..31bb6c8d2cf3 100644
--- a/lang/chez-scheme/Makefile
+++ b/lang/chez-scheme/Makefile
@@ -1,80 +1,79 @@
 # Created by: Ashish SHUKLA <ashish@FreeBSD.org>
 
 PORTNAME=	chez-scheme
-PORTVERSION=	9.5.4
+PORTVERSION=	9.5.6
 DISTVERSIONPREFIX=	v
-PORTREVISION=	2
 CATEGORIES=	lang
 MASTER_SITES=	http://distfiles.pirateparty.in/ashish/:boot \
 		LOCAL/ashish:boot
 DISTFILES=	${PORTNAME}-boot-ta6fb-${PORTVERSION}.tar.xz:boot \
 		${PORTNAME}-boot-ti3fb-${PORTVERSION}.tar.xz:boot
 
 MAINTAINER=	ashish@FreeBSD.org
 COMMENT=	Chez Scheme system
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 ONLY_FOR_ARCHS=	amd64 i386
 
 LIB_DEPENDS=	libuuid.so:misc/e2fsprogs-libuuid \
 		libossp-uuid.so:misc/ossp-uuid
 
 USES=		gmake iconv:lib ncurses
 USE_GITHUB=	yes
 GH_ACCOUNT=	cisco
 GH_PROJECT=	ChezScheme
-GH_TUPLE=	nanopass:nanopass-framework-scheme:v1.9.1:nanopass/nanopass \
+GH_TUPLE=	nanopass:nanopass-framework-scheme:v1.9.2:nanopass/nanopass \
 		madler:zlib:v1.2.11:zlib/zlib \
 		dybvig:stex:v1.2.2:stex/stex \
 		lz4:lz4:3d67671:lz4/lz4
 
 OPTIONS_DEFAULT=	X11
 OPTIONS_DEFINE=	X11
 
 HAS_CONFIGURE=	yes
 ALL_TARGET=	build
 CONFLICTS_INSTALL=	petite-chez
 STRIP_FILES=	bin/petite bin/${PORTNAME} bin/${PORTNAME}-script
 CHEZ_LIBDIR=lib/csv${PORTVERSION}
 CFLAGS+=	-I${LOCALBASE}/include
 LDFLAGS+=	-L${LOCALBASE}/lib -luuid
 CONFIGURE_ARGS=	--installprefix=${PREFIX} \
 		--temproot=${STAGEDIR} \
 		--installschemename=${PORTNAME} \
 		--installscriptname=${PORTNAME}-script
 PLIST_SUB=	PORTNAME=${PORTNAME} \
 		CHEZ_ARCH=${CHEZ_ARCH} \
 		CHEZ_LIBDIR=${CHEZ_LIBDIR}
 X11_USES=	xorg
 X11_USE=	XORG=x11
 
 .include <bsd.port.pre.mk>
 
 .if (${ARCH} == "amd64")
 CONFIGURE_ARGS+=	--threads --64 -m=ta6fb
 CHEZ_ARCH=	ta6fb
 .elif (${ARCH} == "i386")
 CONFIGURE_ARGS+=	--threads --32 -m=ti3fb
 CHEZ_ARCH=	ti3fb
 .endif
 
 post-patch:
 	${LN} -sf ${WRKDIR}/${CHEZ_ARCH} ${WRKSRC}/boot/
 	${REINPLACE_CMD} -e 's,/usr/X11R6,${LOCALBASE},g' \
 		-e 's,/usr/local,${LOCALBASE},g' \
 		-e 's,-liconv,${ICONV_LIB},g' ${WRKSRC}/c/Mf-${CHEZ_ARCH}
 
 pre-build-X11-off:
 	${ECHO_CMD} '#undef LIBX11' >>${WRKSRC}/c/version.h
 
 post-install:
 .for f in ${STRIP_FILES}
 	@${CHMOD} +w ${STAGEDIR}${PREFIX}/${f}
 	@${STRIP_CMD} ${STAGEDIR}${PREFIX}/${f}
 	@${CHMOD} -w ${STAGEDIR}${PREFIX}/${f}
 .endfor
 	@${LN} -sf scheme.boot ${STAGEDIR}${PREFIX}/${CHEZ_LIBDIR}/${CHEZ_ARCH}/${PORTNAME}-script.boot
 
 .include <bsd.port.post.mk>
diff --git a/lang/chez-scheme/distinfo b/lang/chez-scheme/distinfo
index 13a4b7cde513..ebd57adae412 100644
--- a/lang/chez-scheme/distinfo
+++ b/lang/chez-scheme/distinfo
@@ -1,15 +1,15 @@
-TIMESTAMP = 1639213374
-SHA256 (chez-scheme-boot-ta6fb-9.5.4.tar.xz) = 19591d406ce08a5f2a0fd009dc632f051cd82172b29b43cb6627d49459957f48
-SIZE (chez-scheme-boot-ta6fb-9.5.4.tar.xz) = 2119488
-SHA256 (chez-scheme-boot-ti3fb-9.5.4.tar.xz) = 66bdc4bb891608872c051c0e0879ef3a9922558e2e02d0ea6309074f42fb0e9f
-SIZE (chez-scheme-boot-ti3fb-9.5.4.tar.xz) = 2065600
-SHA256 (cisco-ChezScheme-v9.5.4_GH0.tar.gz) = 258a4b5284bb13ac6e8b56acf89a7ab9e8726a90cc57ea1cd71c5da442323840
-SIZE (cisco-ChezScheme-v9.5.4_GH0.tar.gz) = 30670176
-SHA256 (nanopass-nanopass-framework-scheme-v1.9.1_GH0.tar.gz) = 92afa571484e58bb0f4baa3e13f7239a116bfb3b5d4585e3c4c7b28fdbdc93c4
-SIZE (nanopass-nanopass-framework-scheme-v1.9.1_GH0.tar.gz) = 436818
+TIMESTAMP = 1644168718
+SHA256 (chez-scheme-boot-ta6fb-9.5.6.tar.xz) = 6d6dbe28bd3ab3988d6754a71172ed356071f42c1153c195dc04f103e16d57a2
+SIZE (chez-scheme-boot-ta6fb-9.5.6.tar.xz) = 2124880
+SHA256 (chez-scheme-boot-ti3fb-9.5.6.tar.xz) = 82a1c200b81787b1765b552a393fc5b8b9d3b9288f85c9278ccb43a61bd28d5c
+SIZE (chez-scheme-boot-ti3fb-9.5.6.tar.xz) = 2071928
+SHA256 (cisco-ChezScheme-v9.5.6_GH0.tar.gz) = e23c556493f9a661852ea046f3317500feac5f223ea6ef3aa3b9234567e14c0e
+SIZE (cisco-ChezScheme-v9.5.6_GH0.tar.gz) = 32908678
+SHA256 (nanopass-nanopass-framework-scheme-v1.9.2_GH0.tar.gz) = 46d3ab75f425ef93a6ac31f0b0b2f893b9cb3154219832ad52ea044dd36b021c
+SIZE (nanopass-nanopass-framework-scheme-v1.9.2_GH0.tar.gz) = 437581
 SHA256 (madler-zlib-v1.2.11_GH0.tar.gz) = 629380c90a77b964d896ed37163f5c3a34f6e6d897311f1df2a7016355c45eff
 SIZE (madler-zlib-v1.2.11_GH0.tar.gz) = 644492
 SHA256 (dybvig-stex-v1.2.2_GH0.tar.gz) = 7edce38bcafe493bcddfce85cc8ce1dbaae6c847c9d07fd1e1b2f9af19fe71cd
 SIZE (dybvig-stex-v1.2.2_GH0.tar.gz) = 211032
 SHA256 (lz4-lz4-3d67671_GH0.tar.gz) = eeae8b2791a4c72e31b92ec122c948e0aaca89edc756077df3c857937c93634e
 SIZE (lz4-lz4-3d67671_GH0.tar.gz) = 305820