diff --git a/ReadMe.md b/ReadMe.md
index 7978719..5a1ab07 100644
--- a/ReadMe.md
+++ b/ReadMe.md
@@ -39,6 +39,13 @@ Set the following parameter:
 
  ```docker run -t -i --device=/dev/ttyUSB0 -e SERIAL_DEVICE="/dev/ttyUSB0" -e MQTT_SERVER="192.168.x.y" -e MQTT_TOPIC="testtopic/" sha256:```
 
+Additional logging can be activated with the variable **PY_LOGGING** possible values are:
+* DEBUG
+* INFO
+* WARNING
+* ERROR
+* CRITICAL
+
 #### Execution via Docker Compose
 ```
 # template docker-compose.yml