diff --git a/debian/gbp.conf b/debian/gbp.conf
index db32588..256db63 100644
--- a/debian/gbp.conf
+++ b/debian/gbp.conf
@@ -1,4 +1,6 @@
 [DEFAULT]
+compression = xz
+compression-level = 9
 upstream-branch = master
 debian-branch = deb
 upstream-tag = %(version)s