diff --git a/README.md b/README.md
index 709a9ca..14c538f 100755
--- a/README.md
+++ b/README.md
@@ -12,8 +12,8 @@ earlier releases of these systems.
 To install the required dependencies for pi-gen you should run:
 
 ```bash
-apt-get install quilt parted realpath qemu-user-static debootstrap zerofree pxz zip \
-dosfstools bsdtar libcap2-bin grep rsync xz-utils
+apt-get apt-transport-https install quilt parted realpath qemu-user-static debootstrap zerofree pxz zip \
+dosfstools bsdtar libcap2-bin grep rsync xz-utils 
 ```
 
 The file `depends` contains a list of tools needed.  The format of this