diff -Nru sqlheavy-0.1.1/debian/changelog sqlheavy-0.1.1/debian/changelog
--- sqlheavy-0.1.1/debian/changelog	2012-05-17 11:12:48.000000000 +0000
+++ sqlheavy-0.1.1/debian/changelog	2012-09-26 23:32:59.000000000 +0000
@@ -1,3 +1,18 @@
+sqlheavy (0.1.1-1+devfil1) quantal; urgency=low
+
+  * Set debian/compat to 9.
+  * debian/libsqlheavy*-dev.install: install usr/share/vala/vapi/* files
+    in usr/share/vala/vapi directory.
+  * debian/control: require debhelper (>= 9.20120417) in Build-Depends field.
+  * debian/control: add dh-exec (>= 0.3) to Build-Depends field.
+  * debian/{libsqlheavy*-dev,libsqlheavy*-0}.install: modify usr/lib to
+    usr/lib/${DEB_HOST_MULTIARCH} and run dh-exec.
+  * debian/control: add Pre-Depend: multiarch-support in libsqlheavygtk0.1-0
+    and libsqlheavy0.1-0 packages.
+  * debian/control: add Multi-Arch fields.
+
+ -- Devid Antonio Filoni <d.filoni@ubuntu.com>  Mon, 02 Jul 2012 07:42:48 +0200
+
 sqlheavy (0.1.1-1) unstable; urgency=low
 
   * New upstream release (Closes: #663320).
diff -Nru sqlheavy-0.1.1/debian/compat sqlheavy-0.1.1/debian/compat
--- sqlheavy-0.1.1/debian/compat	2011-03-13 13:51:40.000000000 +0000
+++ sqlheavy-0.1.1/debian/compat	2012-07-02 05:51:55.000000000 +0000
@@ -1 +1 @@
-7
+9
diff -Nru sqlheavy-0.1.1/debian/control sqlheavy-0.1.1/debian/control
--- sqlheavy-0.1.1/debian/control	2012-05-17 07:54:37.000000000 +0000
+++ sqlheavy-0.1.1/debian/control	2012-07-02 14:35:37.000000000 +0000
@@ -2,15 +2,17 @@
 Section: libs
 Priority: optional
 Maintainer: Devid Antonio Filoni <d.filoni@ubuntu.com>
-Build-Depends: debhelper (>= 7.0.50~), autotools-dev, valac-0.16 (>= 0.16.0),
+Build-Depends: debhelper (>= 9.20120417), autotools-dev, valac-0.16 (>= 0.16.0),
  libvala-0.16-dev (>= 0.16.0), vala-0.16-doc, libglib2.0-dev (>= 2.22.0),
- libgtk2.0-dev (>= 2.24), libsqlite3-dev (>= 3.6.23.1)
+ libgtk2.0-dev (>= 2.24), libsqlite3-dev (>= 3.6.23.1), dh-exec (>= 0.3)
 DM-Upload-Allowed: yes
 Standards-Version: 3.9.3
 Homepage: http://code.google.com/p/sqlheavy/
 
 Package: libsqlheavy0.1-0
 Architecture: any
+Pre-Depends: multiarch-support
+Multi-Arch: same
 Depends: ${shlibs:Depends}, ${misc:Depends}
 Description: GObject wrapper for SQLite
  SQLHeavy is a convenience wrapper on top of SQLite. Though its primary
@@ -23,6 +25,7 @@
 Package: libsqlheavy-dev
 Section: libdevel
 Architecture: any
+Multi-Arch: same
 Depends: ${misc:Depends}, libsqlheavy0.1-0 (= ${binary:Version}),
  libglib2.0-dev (>= 2.22.0), libsqlite3-dev (>= 3.6.23.1)
 Description: GObject wrapper for SQLite (development files)
@@ -35,6 +38,8 @@
 
 Package: libsqlheavygtk0.1-0
 Architecture: any
+Pre-Depends: multiarch-support
+Multi-Arch: same
 Depends: ${shlibs:Depends}, ${misc:Depends}, libsqlheavy0.1-0
  (= ${binary:Version})
 Description: SQLHeavy GTK+ integration library
@@ -49,6 +54,7 @@
 Package: libsqlheavygtk-dev
 Section: libdevel
 Architecture: any
+Multi-Arch: same
 Depends: ${misc:Depends}, libsqlheavygtk0.1-0 (= ${binary:Version}),
  libsqlheavy-dev (= ${binary:Version})
 Description: SQLHeavy GTK+ integration library (development files)
@@ -62,6 +68,7 @@
 
 Package: sqlheavy-utils
 Architecture: any
+Multi-Arch: foreign
 Depends: libsqlheavy0.1-0 (= ${binary:Version}), ${shlibs:Depends},
  ${misc:Depends} 
 Description: GObject wrapper for SQLite (binaries)
@@ -76,6 +83,7 @@
 Section: debug
 Architecture: any
 Priority: extra
+Multi-Arch: same
 Depends: libsqlheavy0.1-0 (= ${binary:Version}), libsqlheavygtk0.1-0
  (= ${binary:Version}), ${shlibs:Depends}, ${misc:Depends}
 Description: GObject wrapper for SQLite (debugging symbols)
@@ -84,4 +92,4 @@
  a very nice C interface and GObject Introspection support, and may be
  easier to use from other languages than the standard SQLite interface.
  .
- This package contains debugging symbols.
+ This package contains debugging symbols.
\ No newline at end of file
diff -Nru sqlheavy-0.1.1/debian/libsqlheavy-dev.install sqlheavy-0.1.1/debian/libsqlheavy-dev.install
--- sqlheavy-0.1.1/debian/libsqlheavy-dev.install	2012-05-17 07:52:05.000000000 +0000
+++ sqlheavy-0.1.1/debian/libsqlheavy-dev.install	2012-07-02 06:25:35.000000000 +0000
@@ -1,5 +1,6 @@
+#! /usr/bin/dh-exec
 usr/include/sqlheavy/sqlheavy-0.1/SQLHeavy.h
-usr/lib/libsqlheavy0.1*.a
-usr/lib/libsqlheavy0.1*.so
-usr/lib/pkgconfig/sqlheavy-0.1.pc
-usr/share/vala/vapi/sqlheavy-0.1.* usr/share/vala-0.16/vapi
+usr/lib/${DEB_HOST_MULTIARCH}/libsqlheavy0.1*.a
+usr/lib/${DEB_HOST_MULTIARCH}/libsqlheavy0.1*.so
+usr/lib/${DEB_HOST_MULTIARCH}/pkgconfig/sqlheavy-0.1.pc
+usr/share/vala/vapi/sqlheavy-0.1.* usr/share/vala/vapi
diff -Nru sqlheavy-0.1.1/debian/libsqlheavy0.1-0.install sqlheavy-0.1.1/debian/libsqlheavy0.1-0.install
--- sqlheavy-0.1.1/debian/libsqlheavy0.1-0.install	2011-10-23 15:01:35.000000000 +0000
+++ sqlheavy-0.1.1/debian/libsqlheavy0.1-0.install	2012-07-02 06:25:31.000000000 +0000
@@ -1,2 +1,3 @@
-usr/lib/libsqlheavy0.1*.so.*
+#! /usr/bin/dh-exec
+usr/lib/${DEB_HOST_MULTIARCH}/libsqlheavy0.1*.so.*
 usr/share/sqlheavy/0.1/schemas/*
diff -Nru sqlheavy-0.1.1/debian/libsqlheavygtk-dev.install sqlheavy-0.1.1/debian/libsqlheavygtk-dev.install
--- sqlheavy-0.1.1/debian/libsqlheavygtk-dev.install	2012-05-17 07:53:52.000000000 +0000
+++ sqlheavy-0.1.1/debian/libsqlheavygtk-dev.install	2012-07-02 06:25:45.000000000 +0000
@@ -1,5 +1,6 @@
+#! /usr/bin/dh-exec
 usr/include/sqlheavy/sqlheavy-0.1/SQLHeavyGTK.h
-usr/lib/libsqlheavygtk0.1*.a
-usr/lib/libsqlheavygtk0.1*.so
-usr/lib/pkgconfig/sqlheavygtk-0.1.pc
-usr/share/vala/vapi/sqlheavygtk-0.1.* usr/share/vala-0.16/vapi
+usr/lib/${DEB_HOST_MULTIARCH}/libsqlheavygtk0.1*.a
+usr/lib/${DEB_HOST_MULTIARCH}/libsqlheavygtk0.1*.so
+usr/lib/${DEB_HOST_MULTIARCH}/pkgconfig/sqlheavygtk-0.1.pc
+usr/share/vala/vapi/sqlheavygtk-0.1.* usr/share/vala/vapi
diff -Nru sqlheavy-0.1.1/debian/libsqlheavygtk0.1-0.install sqlheavy-0.1.1/debian/libsqlheavygtk0.1-0.install
--- sqlheavy-0.1.1/debian/libsqlheavygtk0.1-0.install	2011-10-23 15:01:59.000000000 +0000
+++ sqlheavy-0.1.1/debian/libsqlheavygtk0.1-0.install	2012-07-02 06:25:40.000000000 +0000
@@ -1 +1,2 @@
-usr/lib/libsqlheavygtk0.1*.so.*
+#! /usr/bin/dh-exec
+usr/lib/${DEB_HOST_MULTIARCH}/libsqlheavygtk0.1*.so.*