diff --git a/www/tailwindcss3/Makefile b/www/tailwindcss3/Makefile
index 192585e27410..c246057a384c 100644
--- a/www/tailwindcss3/Makefile
+++ b/www/tailwindcss3/Makefile
@@ -1,56 +1,57 @@
 PORTNAME=	tailwindcss3
 DISTVERSION=	3.4.17
 CATEGORIES=	www devel
 MASTER_SITES=	LOCAL/dch/${PORTNAME}/:npm
 DISTFILES=	${PORTNAME}-npm-cache-${DISTVERSION}${EXTRACT_SUFX}:npm
 
 MAINTAINER=	dch@FreeBSD.org
 COMMENT=	Utility-first CSS framework with npm dependencies
 WWW=		https://tailwindcss.com/
 
 LICENSE=	MIT
 
+ONLY_FOR_ARCHS=	amd64 aarch64 # causes runaway builds in pkg cluster
 BUILD_DEPENDS=	npm:www/npm
 USES=		nodejs:run tar:txz
 
 CONFLICTS_INSTALL=	tailwindcss*
 
 _DAISYUI_VER=	4.12.24
 _FORMS_VER=	0.5.10
 _POSTCSS_VER=	8.4.49
 _PREFIX_VER=	10.4.20
 _TAILWIND_VER=	${DISTVERSION}
 
 _NPM_CACHE=	${WRKDIR}/cache
 _NPM_ARCHIVE=	${PORTNAME}-npm-cache-${DISTVERSION}${EXTRACT_SUFX}
 
 do-extract:
 	@${MKDIR} ${WRKDIR}/cache
 	${TAR} -xf ${DISTDIR}/${_NPM_ARCHIVE} -C ${_NPM_CACHE}
 
 do-build:
 # because nodejs is fiddly we can't build & then install
 .if !defined(MAINTAINER_MODE)
 	${ECHO_CMD} offline=true > ${WRKDIR}/.npmrc
 .endif
 
 do-install:
 	(cd ${WRKDIR} && \
 		${SETENV} HOME=${WRKDIR} npm install --global --no-audit \
 		--no-fund --no-prune --cache ${_NPM_CACHE} --prefer-offline \
 		--prefix=${STAGEDIR}${PREFIX} autoprefixer@${_PREFIX_VER} \
 		tailwindcss@${_TAILWIND_VER} postcss@${_POSTCSS_VER} \
 		@tailwindcss/forms@${_FORMS_VER} daisyui@${_DAISYUI_VER})
 # remove files already present in node, npm, or yarn packages
 .for m in corepack npm
 	${RM} -rf ${STAGEDIR}${PREFIX}/lib/node_modules/${m}
 .endfor
 
 _tarball: do-install
 	${TAR} -caf ${DISTDIR}/${_NPM_ARCHIVE} -C ${_NPM_CACHE} _cacache
 	${CHMOD} 644 ${DISTDIR}/${_NPM_ARCHIVE}
 	@${ECHO_MSG} Ready to upload tarball to freefall distfiles directory:
 	@${ECHO_MSG} ${DISTDIR}/${_NPM_ARCHIVE}
 	@${ECHO_MSG} scp ${DISTDIR}/${_NPM_ARCHIVE} dch@freefall.freebsd.org:public_distfiles/${PORTNAME}/
 
 .include <bsd.port.mk>