diff --git a/README.md b/README.md
index 7cd6db9..b10df21 100644
--- a/README.md
+++ b/README.md
@@ -10,11 +10,13 @@ For now I can say that uplink can monitor the status of you FRITZ!Box uplinks. I
 
 ## Requirements
 
+ - A Linux based operating system (I don't test any other OS's but Raspian is fine and a good target)
  - Git (only for installing from Git repository)
  - Python3 (running for me using 3.7.3, 3.8.5 and 3.9.7 on Linux) 
- - fritzconnection >= 1.5.0
+ - fritzconnection = 1.5.0
  - pymysql >= 0.10.1
  - sqlalchemy = 1.4.27 (not for now)
+ - urwid = 2.1.2 (not for now)
 
 Just install the 3rd party dependencies using `pip install $PACKAGE` or your OS package manager
 ## Installation