diff --git a/requirements.txt b/requirements.txt
index 7d582b2e15ba4dfb21616407bb68007c674b35f0..d2f21bb2cfefb28570eed8dce8456e0dd0466ff1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,4 +4,5 @@ numpy
 recordclass
 pyyaml
 python-logstash-async
-RPi.GPIO
\ No newline at end of file
+RPi.GPIO
+smbus
\ No newline at end of file