diff --git a/debian/changelog b/debian/changelog
index 25612fe..0b00687 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,7 +1,8 @@
-plib (1.8.5-r2173) unstable; urgency=low
+plib (1.8.5-r2173ubuntu1) UNRELEASED; urgency=low
 
   * New upstream release
-
+  * Switch to dpkg-source 3.0 (quilt) format
+ 
  -- Alexander Deynichenko <adeynichenko@gmail.com>  Mon, 25 Feb 2013 07:39:43 +0400
 
 plib (1.8.5-5) unstable; urgency=low
diff --git a/debian/source/format b/debian/source/format
new file mode 100644
index 0000000..163aaf8
--- /dev/null
+++ b/debian/source/format
@@ -0,0 +1 @@
+3.0 (quilt)