diff --git a/jack2/PKGBUILD b/jack2/PKGBUILD
index c892d9413..4f9bd93bd 100644
--- a/jack2/PKGBUILD
+++ b/jack2/PKGBUILD
@@ -1,7 +1,11 @@
 #
 # Platform Packages for Chakra, part of chakra-project.org
 #
-# maintainer: Michael Haesel <michael[dot]haesel[at]gmail[dot]com>
+# Maintainer: Michael Haesel <michael[dot]haesel[at]gmail[dot]com>
+# Contributor: Ray Rashif <schiv@archlinux.org>
+# Contributor: Daniele Paolella <danielepaolella@email.it>
+# Contributor: Philipp Überbacher <hollunder at gmx dot at>
+# Contributor: Thomas Bahn <thomas-bahn at gmx dot net>
 
 pkgbase=jack2
 pkgname=('jack2' 'jack2-dbus')
@@ -18,9 +22,9 @@ makedepends=('python2' 'doxygen' 'libffado'
 source=("http://www.grame.fr/~letz/${_tarname}-${pkgver}.tgz"
         '99-audio.conf'
         '40-hpet-permissions.rules')
-md5sums=('1dd2ff054cab79dfc11d134756f27165'
-         '4d928a76e3f3d77d037c42ab75ac0f0b'
-         '23eba69d2dbbb800f68176e5d38b9af5')
+sha256sums=('4c712eac54bdf5b4c0245f728654459d0437e5cdab84e7ac633be6fe4502081d'
+            '3b779961c20e072467b8fdc031cebe6a9f2512c89c5e5da4b4c523fe01e2f038'
+            '58df6c563b5a2aac297e70d4c6d96e1103c5f1f8d9bd051d944b39416b65cd5f')
 
 _pyfix() {
   sed -i 's:bin/env python:bin/env python2:' \