Debian Linux Security Advisory 3050-2 – DSA-3050-1 updated the Iceweasel browser to the new ESR31 series of Firefox. In that version the xulrunner library is no longer included. This followup update provides xulrunner 24.8.1esr-2~deb7u1 in a separate source package to ensure that packages build-depending on xulrunner remain buildable.