diff --git a/INSTALL.txt b/INSTALL.txt
index 4f3c5e6a0..683740922 100644
--- a/INSTALL.txt
+++ b/INSTALL.txt
@@ -1,4 +1,4 @@
-Installation Instructions for OpenSlides 1.3
+Installation Instructions for OpenSlides 1.4
 ============================================
 
 Content
@@ -45,9 +45,14 @@ I. Installation on GNU/Linux and MacOSX using the Python Package Index (PyPI)
         OpenSlides will install the following required python packages:
           + Django
           + django-mptt
-          + ReportLab Toolkit
-          + Python Imaging Library (PIL)
-
+          + pillow
+          + qrcode
+          + reportlab
+          + tornado
+          + bleach
+          + beautifulsoup4
+          + html5lib
+          
   4. Start OpenSlides server and open URL in your default browser:
 
         $ openslides
@@ -65,17 +70,14 @@ I. Installation on GNU/Linux and MacOSX using the Python Package Index (PyPI)
 II. Installation on GNU/Linux and MacOSX using the sources
 ----------------------------------------------------------
 
-  1. Install requirements:
+  1. Check requirements:
 
-        OpenSlides requires following programs, which should be
-        installed first:
-          + Python Programming Language 2 (>= 2.6)
-          + virtualenv (>= 1.4.1)
-          + ReportLab Toolkit
-          + Python Imaging Library (PIL)
+        Make sure that you have installed Python Programming Language 2
+        (>= 2.6) and virtualenv (>= 1.4.1) on your system. You will also
+        need the Python development headers.
 
         E. g. for Ubuntu run:
-        $ sudo apt-get install python python-virtualenv python-reportlab python-imaging
+        $ sudo apt-get install python-dev python-virtualenv
 
   2. Get OpenSlides:
 
@@ -83,13 +85,14 @@ II. Installation on GNU/Linux and MacOSX using the sources
 
      OR
 
-     b) Clone development version from OpenSlides' github repository
-        https://github.com/OpenSlides/OpenSlides. This requires Git,
-        see http://git-scm.com/.
-
-        E. g. for Ubuntu run:
-        $ sudo apt-get install git
+     b) Clone current master version from OpenSlides' GitHub repository
+        https://github.com/OpenSlides/OpenSlides.
+        
         $ git clone git://github.com/OpenSlides/OpenSlides.git OpenSlides
+        
+        This requires Git (see http://git-scm.com/).
+        To install Git e.g. on Ubuntu run:
+        $ sudo apt-get install git
 
   3. Setup a virtual environment with virtualenv (optional):
 
@@ -105,22 +108,16 @@ II. Installation on GNU/Linux and MacOSX using the sources
         $ virtualenv .venv
         $ source .venv/bin/activate
 
-  4. Install the required python-packages:
+  4. Install all required python packages:
 
-        $ pip install django django-mptt
-
-        If you use python < 2.6 you also have to install simplejson:
-        $ pip install simplejson
-
-        If requirements reportlab or PIL still missing (see 1.):
-        $ pip install reportlab pil
+        $ pip install -r requirements.txt
 
   5. Start OpenSlides server and open URL in your default browser:
 
         $ python start.py
 
         If you run this script the first time a new database and the
-        admin account are created. Please change the password after
+        admin account will be created. Please change the password after
         first login!
 
         Username: admin
@@ -131,7 +128,10 @@ II. Installation on GNU/Linux and MacOSX using the sources
   6. Restart OpenSlides:
 
         To restart OpenSlides after closing the terminal activate the
-        virtual environment (see 4.) before starting the server (see 6.).
+        virtual environment before starting the server:
+
+        $ source .venv/bin/activate
+        $ python start.py
 
 
 III. Installation on Windows (32bit) using the Python Package Index (PyPI)
diff --git a/README.txt b/README.txt
index cdbe0880b..70b3de691 100644
--- a/README.txt
+++ b/README.txt
@@ -2,7 +2,7 @@
 English README file for OpenSlides
 ==================================
 
-This is OpenSlides, version 1.4.0 (unreleased).
+This is OpenSlides, version 1.4-alpha1 (2013-04-24).
 
 
 What is OpenSlides?
@@ -70,6 +70,9 @@ The following command line options are available:
 --no-reload
     Does not reload the development server
 
+--no-browser
+    Do not automatically start web browser.
+
 --version
     Show version and exit.
 
diff --git a/THANKS b/THANKS
index 8472b5382..39e40f0d8 100644
--- a/THANKS
+++ b/THANKS
@@ -16,6 +16,9 @@ OpenSlides uses parts of the following projects:
   with css theme 'smoothness'
   and some addons: slider access, timepicker
 
+* nestedSortable jQuery Plugin
+  <http://mjsarfatti.com/sandbox/nestedSortable/>
+
 * Twitter Bootstrap
   <http://twitter.github.com/bootstrap/>
 
@@ -24,6 +27,3 @@ OpenSlides uses parts of the following projects:
 
 * Ubuntu TrueType Font
   <http://font.ubuntu.com/>
-
-* nestedSortable jQuery Plugin
-  <http://mjsarfatti.com/sandbox/nestedSortable/>