diff --git a/release/packages/runtime.ucl b/release/packages/runtime.ucl
index d34575bd997..f55f1c8fef5 100644
--- a/release/packages/runtime.ucl
+++ b/release/packages/runtime.ucl
@@ -20,6 +20,7 @@ scripts: {
 	post-install = <<EOD
 	cap_mkdb %CAP_MKDB_ENDIAN% ${PKG_ROOTDIR}/etc/login.conf
 	pwd_mkdb %PWD_MKDB_ENDIAN% -i -p -d  ${PKG_ROOTDIR}/etc ${PKG_ROOTDIR}/etc/master.passwd
+	chmod 1777 ${PKG_ROOTDIR}/tmp
 EOD
 }
 deps: {