diff --git a/software/main.py b/software/main.py
index ff603d4e261d89ff1310ec3a3d06847e717eb429..a9a9335b7dfbbcbf4e57592bccd6da17e4f3ea81 100644
--- a/software/main.py
+++ b/software/main.py
@@ -6,6 +6,10 @@ import ubinascii
 import sevenseg
 import measurement
 
+# Setup watchdog, timeout in ms
+# Main loop below takes 2*10*500ms=10000ms, setup high enough.
+wdt = machine.WDT(timeout = 30000)
+
 UID = ubinascii.hexlify(machine.unique_id()).decode()
 MQTT = mqtt.MQTTClient("Sensor_{}".format(UID), "mqtt.intern.ca.rstenpresser.de")
 SS = sevenseg.sevenseg()
@@ -35,6 +39,8 @@ delay = 500
 current = 0
 voltage = 0
 while True:
+  wdt.feed()
+
   # display current
   for i in range(0, count):
     current = MM.read_current_mA()