diff --git a/Makefile.inc1 b/Makefile.inc1
--- a/Makefile.inc1
+++ b/Makefile.inc1
@@ -1857,9 +1857,15 @@
 	@env ASSUME_ALWAYS_YES=YES pkg bootstrap
 .endif
 
-.if make(create-world-packages-jobs) || make(create-kernel-packages*) || make(real-update-packages)
+.if make(create-world-packages-jobs) || make(create-kernel-packages*) || make(real-update-packages) || make(sign-packages)
 PKG_ABI!=${PKG_CMD} -o ABI_FILE=${WSTAGEDIR}/usr/bin/uname config ABI
 .endif
+PKG_BIN_VERSION!=${PKG_CMD} --version | awk -F. '{print $$1 * 10000 + $$2 * 100 + $$3}'
+.if ${PKG_BIN_VERSION} < 11700
+PKG_EXT=	${PKG_FORMAT}
+.else
+PKG_EXT=	pkg
+.endif
 
 .if !defined(PKG_VERSION_FROM) && make(real-update-packages)
 .if defined(PKG_ABI)
@@ -1899,14 +1905,14 @@
 	@echo "==> Checking for new packages (comparing ${PKG_VERSION} to ${PKG_VERSION_FROM})"
 	@for pkg in ${PKG_VERSION_FROM_DIR}/${PKG_NAME_PREFIX}-*; do \
 	  pkgname=$$(pkg query -F $${pkg} '%n' | sed 's/${PKG_NAME_PREFIX}-\(.*\)/\1/') ; \
-	  newpkgname=${PKG_NAME_PREFIX}-$${pkgname}-${PKG_VERSION}.pkg ; \
+	  newpkgname=${PKG_NAME_PREFIX}-$${pkgname}-${PKG_VERSION}.${PKG_EXT} ; \
 	  oldsum=$$(pkg query -F $${pkg} '%X') ; \
 	  if [ ! -f ${REPODIR}/${PKG_ABI}/${PKG_VERSION}/$${newpkgname} ]; then \
 	    continue; \
 	  fi ; \
 	  newsum=$$(pkg query -F ${REPODIR}/${PKG_ABI}/${PKG_VERSION}/$${newpkgname} '%X') ; \
 	  if [ "$${oldsum}" == "$${newsum}" ]; then \
-	   echo "==> Keeping old ${PKG_NAME_PREFIX}-$${pkgname}-${PKG_VERSION_FROM}.pkg" ; \
+	   echo "==> Keeping old ${PKG_NAME_PREFIX}-$${pkgname}-${PKG_VERSION_FROM}.${PKG_EXT}" ; \
 	   rm ${REPODIR}/${PKG_ABI}/${PKG_VERSION}/$${newpkgname} ; \
 	   cp $${pkg} ${REPODIR}/${PKG_ABI}/${PKG_VERSION} ; \
 	  else \
@@ -2064,6 +2070,9 @@
 
 sign-packages:	_pkgbootstrap .PHONY
 	printf "version = 2;\n" > ${WSTAGEDIR}/meta
+.if ${PKG_BIN_VERSION} < 11700
+	printf "packing_format = \"${PKG_FORMAT}\";\n" >> ${WSTAGEDIR}/meta
+.endif
 	@[ -L "${REPODIR}/$$(${PKG_CMD} -o ABI_FILE=${WSTAGEDIR}/usr/bin/uname config ABI)/latest" ] && \
 		unlink ${REPODIR}/$$(${PKG_CMD} -o ABI_FILE=${WSTAGEDIR}/usr/bin/uname config ABI)/latest ; \
 	${PKG_CMD} -o ABI_FILE=${WSTAGEDIR}/usr/bin/uname repo \