diff --git a/Makefile.inc1 b/Makefile.inc1
--- a/Makefile.inc1
+++ b/Makefile.inc1
@@ -606,6 +606,7 @@
 .else
 SOURCE_DATE_EPOCH=	${PKG_TIMESTAMP}
 .endif
+PKG_WORKERS_COUNT?=	1
 
 PKG_NAME_PREFIX?=	FreeBSD
 PKG_MAINTAINER?=	re@FreeBSD.org
@@ -2367,7 +2368,8 @@
 .if ${PKG_BIN_VERSION} < 11700
 	printf "packing_format = \"${PKG_FORMAT}\";\n" >> ${WSTAGEDIR}/meta
 .endif
-	@${PKG_CMD} -o ABI=${PKG_ABI} -o OSVERSION="${SRCRELDATE}" repo \
+	@${PKG_CMD} -o ABI=${PKG_ABI} -o OSVERSION="${SRCRELDATE}" \
+		-o WORKERS_COUNT=${PKG_WORKERS_COUNT} repo \
 		-m ${WSTAGEDIR}/meta \
 		-o ${REPODIR}/${PKG_ABI}/${PKG_VERSION} \
 		${REPODIR}/${PKG_ABI}/${PKG_VERSION} \