diff --git a/debian/changelog b/debian/changelog
index 7b25f83..46a8cae 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -10,6 +10,7 @@ xen-tools (4.3~rc2~dev-1) UNRELEASED; urgency=low
       t/pod-coverage.t.
     - Skip t/hook-inittab.t if /etc/inittab is not present on the build
       host. Fixes FTBFS on Ubuntu.
+  * Switch to source format to "3.0 (quilt)"
 
  -- Axel Beckert <abe@debian.org>  Fri, 08 Jun 2012 20:34:22 +0200
 
diff --git a/debian/source/format b/debian/source/format
index d3827e7..163aaf8 100644
--- a/debian/source/format
+++ b/debian/source/format
@@ -1 +1 @@
-1.0
+3.0 (quilt)