diff --git a/mail/py-postfix-mta-sts-resolver/Makefile b/mail/py-postfix-mta-sts-resolver/Makefile
index 0011029bb230..ae7df69119ba 100644
--- a/mail/py-postfix-mta-sts-resolver/Makefile
+++ b/mail/py-postfix-mta-sts-resolver/Makefile
@@ -1,48 +1,48 @@
 PORTNAME=	postfix-mta-sts-resolver
-PORTVERSION=	1.4.0
-PORTREVISION=	1
+PORTVERSION=	1.5.1
 DISTVERSIONPREFIX=	v
 CATEGORIES=	mail python
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	nork@FreeBSD.org
 COMMENT=	TLS client policy for Postfix according to domain MTA-STS policy
 WWW=		https://pypi.python.org/pypi/postfix-mta-sts-resolver
 
 LICENSE=	MIT
 
-BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}wheel>0:devel/py-wheel@${PY_FLAVOR}
+BUILD_DEPENDS=	${PY_SETUPTOOLS} \
+		${PYTHON_PKGNAMEPREFIX}wheel>0:devel/py-wheel@${PY_FLAVOR}
 RUN_DEPENDS=	${LOCALBASE}/share/certs/ca-root-nss.crt:security/ca_root_nss \
 		${PYTHON_PKGNAMEPREFIX}aiodns>=3.0.0:dns/py-aiodns@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}aiohttp>=3.4.4:www/py-aiohttp@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pyyaml>=3.12:devel/py-pyyaml@${PY_FLAVOR}
 
 USES=		python
 USE_GITHUB=	yes
 GH_ACCOUNT=	Snawoot
-USE_PYTHON=	autoplist distutils
+USE_PYTHON=	autoplist pep517
 USE_RC_SUBR=	mta_sts
 
 NO_ARCH=	yes
 
 SUB_LIST=	PYTHON_CMD=${PYTHON_CMD}
 PLIST_FILES=	"@sample etc/mta-sts-daemon.yml.sample"
 
 OPTIONS_DEFINE=		PGSQL REDIS SQLITE UVLOOP
 OPTIONS_DEFAULT=	PGSQL REDIS SQLITE UVLOOP
 
 UVLOOP_DESC=		Event loop support
 PGSQL_RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}asyncpg>=0.27.0:databases/py-asyncpg@${PY_FLAVOR}
 REDIS_RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}redis>=4.2.0:databases/py-redis@${PY_FLAVOR}
 SQLITE_RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}aiosqlite>=0.10.0:databases/py-aiosqlite@${PY_FLAVOR}
 UVLOOP_RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}uvloop>=0.11.0:devel/py-uvloop@${PY_FLAVOR}
 
 post-extract:
 	${REINPLACE_CMD} -e 's|/etc/|${PREFIX}/etc/|' \
 		${WRKSRC}/postfix_mta_sts_resolver/defaults.py
 
 post-install:
 	${INSTALL_DATA} ${WRKSRC}/config_examples/mta-sts-daemon.yml.internal \
 			${STAGEDIR}${PREFIX}/etc/mta-sts-daemon.yml.sample
 
 .include <bsd.port.mk>
diff --git a/mail/py-postfix-mta-sts-resolver/distinfo b/mail/py-postfix-mta-sts-resolver/distinfo
index 404f125166fa..a4379819d317 100644
--- a/mail/py-postfix-mta-sts-resolver/distinfo
+++ b/mail/py-postfix-mta-sts-resolver/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1695492126
-SHA256 (Snawoot-postfix-mta-sts-resolver-v1.4.0_GH0.tar.gz) = 6fe07c9076e329fe3a9a347d7f9f8b2885526067dd7ea906b8916cd0dd5040ab
-SIZE (Snawoot-postfix-mta-sts-resolver-v1.4.0_GH0.tar.gz) = 54627
+TIMESTAMP = 1770128585
+SHA256 (Snawoot-postfix-mta-sts-resolver-v1.5.1_GH0.tar.gz) = ed398e2a652c6f89e32ca7bb64ee30ab6309b692bcbac1b9f13affc9fc39ac04
+SIZE (Snawoot-postfix-mta-sts-resolver-v1.5.1_GH0.tar.gz) = 54992