diff --git a/source/developer-guide/nightly-builds/install.rst b/source/developer-guide/nightly-builds/install.rst
index 61b3ca9d..89270eca 100644
--- a/source/developer-guide/nightly-builds/install.rst
+++ b/source/developer-guide/nightly-builds/install.rst
@@ -1,73 +1,108 @@
 .. _dev-packaging-install_nightly:
 
 ============================================
 Install the nightly build on a test server
 ============================================
 
 For development of the community version of Kolab, it is helpful to have nightly built packages of the master of https://git.kolab.org.
 
 Note: these packages are only meant for development and testing, not at all for production use!!!
 
 It is recommended to do a fresh install of the machine, when you want to go back to the Kolab Community version packages, without the nightly packages.
 
-CentOS 6
+CentOS 7
 =================================================
 
 First the usual steps, that you do for installing Kolab3 (see also :ref:`installation-centos`):
 
 .. parsed-literal::
 
-    wget http://ftp.uni-kl.de/pub/linux/fedora-epel/6/i386/epel-release-6-8.noarch.rpm
-    yum -y localinstall --nogpgcheck epel-release-6-8.noarch.rpm
+    yum install epel-release
     cd /etc/yum.repos.d/
-    wget http://obs.kolabsys.com/Kolab:/3.3/CentOS_6/Kolab:3.3.repo
-    wget http://obs.kolabsys.com/Kolab:/3.3:/Updates/CentOS_6/Kolab:3.3:Updates.repo
+    wget http://obs.kolabsys.com/repositories/Kolab:/3.4/CentOS_7/Kolab:3.4.repo
+    wget http://obs.kolabsys.com/repositories/Kolab:/3.4:/Updates/CentOS_7/Kolab:3.4:Updates.repo
     cd -
 
 Now also install the repo for the `obs.kolabsys.com tpokorra Project <https://obs.kolabsys.com/project/show?project=home%3Atpokorra%3Abranches%3AKolab%3ADevelopment>`_:
 
 .. parsed-literal::
 
-    wget http://obs.kolabsys.com/home:/tpokorra:/branches:/Kolab:/Development/CentOS_6/home:tpokorra:branches:Kolab:Development.repo \\
+    wget http://obs.kolabsys.com/home:/tpokorra:/branches:/Kolab:/Development/CentOS_7/home:tpokorra:branches:Kolab:Development.repo \\
               -O /etc/yum.repos.d/obs-tpokorra-nightly-kolab.repo
 
 Now run:
 
 .. parsed-literal::
 
     yum install kolab
     setup-kolab
 
 Debian 7.0
 ==========
 
 See also the usual steps, that you do for installing Kolab3 (see also :ref:`installation-debian`). We are adding another repository for the nightly built packages.
 
 .. parsed-literal::
     username=tpokorra
     cat > /etc/apt/sources.list.d/kolab.list <<FINISH
-    deb http://obs.kolabsys.com/Kolab:/3.3/Debian_7.0/ ./
-    deb http://obs.kolabsys.com/Kolab:/3.3:/Updates/Debian_7.0/ ./
-    deb http://obs.kolabsys.com/home:/$username:/branches:/Kolab:/Development/Debian_7.0/ ./
+    deb http://obs.kolabsys.com/repositories/Kolab:/3.4/Debian_7.0/ ./
+    deb http://obs.kolabsys.com/repositories/Kolab:/3.4:/Updates/Debian_7.0/ ./
+    deb http://obs.kolabsys.com/repositories/home:/$username:/branches:/Kolab:/Development/Debian_7.0/ ./
     FINISH
-    
-    wget http://obs.kolabsys.com/Kolab:/3.3/Debian_7.0/Release.key
+     
+    wget http://obs.kolabsys.com/repositories/Kolab:/3.4/Debian_7.0/Release.key
     apt-key add Release.key; rm -rf Release.key
-    wget http://obs.kolabsys.com/Kolab:/3.3:/Updates/Debian_7.0/Release.key
+    wget http://obs.kolabsys.com/repositories/Kolab:/3.4:/Updates/Debian_7.0/Release.key
     apt-key add Release.key; rm -rf Release.key
-    wget http://obs.kolabsys.com/home:/$username:/branches:/Kolab:/Development/Debian_7.0/Release.key
+    wget http://obs.kolabsys.com/repositories/home:/$username:/branches:/Kolab:/Development/Debian_7.0/Release.key
     apt-key add Release.key; rm -rf Release.key
     
     cat > /etc/apt/preferences.d/kolab <<FINISH
     Package: *
     Pin: origin obs.kolabsys.com
     Pin-Priority: 501
     FINISH
     
     apt-get update
     apt-get install kolab
 
 And then run
 
 .. parsed-literal::
     setup-kolab
+
+Debian 8.0
+==========
+
+See also the usual steps, that you do for installing Kolab3 (see also :ref:`installation-debian`). We are adding another repository for the nightly built packages.
+
+.. parsed-literal::
+    username=tpokorra
+    cat > /etc/apt/sources.list.d/kolab.list <<FINISH
+    deb http://obs.kolabsys.com/repositories/Kolab:/3.4/Debian_8.0/ ./
+    deb http://obs.kolabsys.com/repositories/Kolab:/3.4:/Updates/Debian_8.0/ ./
+    deb http://obs.kolabsys.com/repositories/home:/$username:/branches:/Kolab:/Development/Debian_8.0/ ./
+    FINISH
+     
+    wget http://obs.kolabsys.com/repositories/Kolab:/3.4/Debian_8.0/Release.key
+    apt-key add Release.key; rm -rf Release.key
+    wget http://obs.kolabsys.com/repositories/Kolab:/3.4:/Updates/Debian_8.0/Release.key
+    apt-key add Release.key; rm -rf Release.key
+    wget http://obs.kolabsys.com/repositories/home:/$username:/branches:/Kolab:/Development/Debian_8.0/Release.key
+    apt-key add Release.key; rm -rf Release.key
+    
+    cat > /etc/apt/preferences.d/kolab <<FINISH
+    Package: *
+    Pin: origin obs.kolabsys.com
+    Pin-Priority: 501
+    FINISH
+    
+    apt-get update
+    # workaround: first install apache2 from Jessie, we don't want apache2 from the Kolab repos which was needed for Wheezy
+    apt-get install apache2 -t stable
+    aptitude install kolab
+
+And then run
+
+.. parsed-literal::
+    setup-kolab