diff --git a/readme.md b/readme.md
index 4a4ddeb..0325c45 100644
--- a/readme.md
+++ b/readme.md
@@ -13,7 +13,7 @@ For information on the MouseJack vulnerabilities, please visit [mousejack.com](h
 Install dependencies on Ubuntu:
 
 ```
-sudo apt-get install sdcc binutils python python-pip
+sudo apt-get install sdcc binutils python python-pip python-usb
 sudo pip install -U pip
 sudo pip install -U -I pyusb
 sudo pip install -U platformio
@@ -217,4 +217,4 @@ Transmit a continuous tone at 2405MHz
 ```
 cd nrf-research-firmware
 ./nrf24-continuous-tone-test.py -c 5
-```
\ No newline at end of file
+```