diff --git a/requirements.txt b/requirements.txt
index 73516b14481fc30a0516fad07a866ec007db3a8c..d9624a1c647130aa54177616300eeb9098c69dbf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
 meson~=0.51.1
 crc16~=0.1.1
 pillow~=6.1.0
+pyserial~=3.4