diff --git a/README.md b/README.md
index a6c889b..243aa0d 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,14 @@ There are some caveats:
 ## Cache
 
 I run `apt-cacher-ng` on my system to keep packages required close. You may wish
-to do the same. If you do not, run remove the following line from `auto/config`: 
-`--apt-http-proxy http://127.0.0.1:3142`
+to do the same. This cuts down on rebuild time significantly.
+
+You can either add the following to `/etc/live/build.conf`:
+`LB_APT_HTTP_PROXY="http://127.0.0.1:3142"` and re-run `lb config`.
+
+OR 
+
+Add the following line to `auto/config`: `--apt-http-proxy
+http://127.0.0.1:3142` and re-run `lb config`
 
 That's it so far. More will appear no doubt.