diff --git a/default/multistrap.conf.armhf b/default/multistrap.conf.armhf
index 9fffcf1..9fc6b3e 100644
--- a/default/multistrap.conf.armhf
+++ b/default/multistrap.conf.armhf
@@ -10,7 +10,7 @@ allowrecommends=false
 addimportant=false
 
 [Debian_bootstrap]
-packages=$PACKAGES
+packages=debian-ports-archive-keyring $PACKAGES
 source=$MIRROR
 suite=$SUITE
 omitdebsrc=true