diff --git a/config/chroot_apt/preferences b/config/chroot_apt/preferences
index d454e2e7f62b855c58470acef2085a3fe1476446..ccdc0c2d75ca719c8f03c5ec769211fc896c50ac 100644
--- a/config/chroot_apt/preferences
+++ b/config/chroot_apt/preferences
@@ -53,6 +53,10 @@ Package: obfs4proxy
 Pin: release o=TorProject,n=obfs4proxy
 Pin-Priority: 990
 
+Package: squashfs-tools
+Pin: release o=Debian,n=sid
+Pin-Priority: 999
+
 Package: tails-installer
 Pin: origin deb.tails.boum.org
 Pin-Priority: 999