For me apt update froze while processing the http://gemian.thinkglobally.org/stretch/ gemini-linux-kernel-3.18-stretch repository:root@gemini:/etc/apt/sources.list.d# apt updateHit:1 http://security.debian.org/debian-security stretch/updates InReleaseHit:4 http://ftp.debian.org/debian stretch-backports InRelease Ign:5 http://cdn-fastly.deb.debian.org/debian stretch InRelease Hit:6 http://cdn-fastly.deb.debian.org/debian stretch Release0% [Working]^C For me this got solved by installing http-transport-https: apt install apt-transport-httpsMaybe there is some new https redirect on the server.Mith