diff --git a/drawing.py b/drawing.py
index f116202..946e995 100644
--- a/drawing.py
+++ b/drawing.py
@@ -8,7 +8,7 @@ from commands import Commands, send_command
 
 # External Dependencies
 import numpy as np
-import serial # pyserial
+import serial # pip install pyserial, apt install python3-serial
 from serial.tools import list_ports
 
 
diff --git a/install_as_service.sh b/install_as_service.sh
index 09aab1a..eb5496a 100644
--- a/install_as_service.sh
+++ b/install_as_service.sh
@@ -1,3 +1,4 @@
+sudo apt install python3-serial
 chmod +x run.sh
 rm -f fwledmonitor.service || true
 cat <<EOF >>./fwledmonitor.service
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..06b9745
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,3 @@
+pyserial
+numpy
+wmi # only for windows
\ No newline at end of file