diff --git a/requirements.txt b/requirements.txt
index cbe34f2..dcaee76 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,5 +5,6 @@ gevent
 gevent-websocket
 RPi.GPIO
 Adafruit-MAX31855
+Adafruit-MAX31856
 Adafruit-GPIO
 websocket-client