diff --git a/README.md b/README.md
index 7e12252..6fb4476 100644
--- a/README.md
+++ b/README.md
@@ -173,7 +173,7 @@ exit
 ~~~
 . ~nix/.nix-profile/etc/profile.d/nix.sh
 nix-channel --remove nixpkgs
-nix-channel --add http://nixos.org/channels/nixos-unstable nixos
+nix-channel --add https://nixos.org/channels/nixos-unstable nixos
 nix-channel --update
 ~~~