diff --git a/readme.txt b/readme.txt
index 5101fc0..ce1c40e 100644
--- a/readme.txt
+++ b/readme.txt
@@ -18,4 +18,10 @@ to solve the problem
 
 3. Hardware Version 3
 Based on STM32F07
-user need to be in group uucp
\ No newline at end of file
+user need to be in group uucp
+
+required packages (watch CMakeLists): boost, asio, fmt 
+to build:
+$ mkdir build && cd build
+$ cmake ../rennbahnc
+$ make .