diff --git a/requirements.txt b/requirements.txt
index cbe34f2..01d6d6d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,3 +7,5 @@ RPi.GPIO
 Adafruit-MAX31855
 Adafruit-GPIO
 websocket-client
+adafruit-blinka
+adafruit-circuitpython-register