diff --git a/README.md b/README.md
index 89dfec1..23ed83c 100644
--- a/README.md
+++ b/README.md
@@ -31,7 +31,7 @@ want to use:
     `apt-get` invocations with `apt-get -o Acquire::Check-Valid-Until=false`
 - If you want to use the latest versions of each software, you can replace
     `http://snapshot.debian.org/archive/debian/20171007T213914Z/` in raspi3.yaml
-    with the URL of your favorite Debian mirror. Of course, this means that the
+    with `http://deb.debian.org/debian`. Of course, this means that the
     build may break if there are regressions in the latest versions.
 
 Once you have edited raspi3.yaml, you can generate the image by