diff --git a/buildout/README.txt b/buildout/README.txt
index f0b5ca8bfd7d61bb4f82127bcad2db73f9cddd87..38b5689decdc474ba54fa162cfe502460cc29e95 100644
--- a/buildout/README.txt
+++ b/buildout/README.txt
@@ -26,3 +26,13 @@ As each software component this buildout requires something to be installed.
 To query what is required please use:
 
 bin/buildout install show-requirements
+
+Minimal requirements
+--------------------
+
+To start buildout it is required to have:
+
+ * any python with header files (file similar to
+   /usr/lib*/python*/config/Makefile have to be delivered by system package)
+ * svn client (to checkout buildout)
+