add-apt-repository "deb http://packages.netxms.org/debian wheezy main"
wget -q -O - http://packages.netxms.org/netxms.gpg | apt-key add -

Запускаем apt-get update - получаем

W: http://packages.netxms.org/debian/dists/wheezy/Release.gpg: Signature by key C72F55498B31A527181D91D9179C0A80CDFADDB1 uses weak digest algorithm (SHA1)
W: https://www.netxms.org/apt/dists/wheezy/Release.gpg: Signature by key C72F55498B31A527181D91D9179C0A80CDFADDB1 uses weak digest algorithm (SHA1)
E: Failed to fetch http://packages.netxms.org/debian/dists/wheezy/Release  No Hash entry in Release file /var/lib/apt/lists/partial/packages.netxms.org_debian_dists_wheezy_Release which is considered strong enough for security purposes
E: Failed to fetch https://www.netxms.org/apt/dists/wheezy/Release  No Hash entry in Release file /var/lib/apt/lists/partial/www.netxms.org_apt_dists_wheezy_Release which is considered strong enough for security purposes
E: Some index files failed to download. They have been ignored, or old ones used instead.

Прошу подсказать что надо сделать, чтобы репозиторий пакетов NetXMS под новой убунтой заработал.