diff --git a/README.md b/README.md
index 690c5ae..eedeec1 100644
--- a/README.md
+++ b/README.md
@@ -74,7 +74,10 @@ If you are using the scripts on a different Fritz!Box model please let me know b
 1. Pre-requesites for the fritzbox\_traffic and fritzbox\_uptime plugins are the [fritzconnection](https://pypi.python.org/pypi/fritzconnection) and [requests](https://pypi.python.org/pypi/requests) package. To install it
 
         pip install fritzconnection
+        pip install lxml
         pip install requests
+ 
+ fritzconnection requires python3. Make shure python --version is >= 3.6.  
 
 2. Make sure the FritzBox has UPnP status information enabled. (German interface: Heimnetz > Heimnetzübersicht > Netzwerkeinstellungen > Statusinformationen über UPnP übertragen)