diff --git a/README.md b/README.md
index 1969cc9..305e3c6 100644
--- a/README.md
+++ b/README.md
@@ -19,9 +19,10 @@ Known bugs and planned additions
 ## Install
 - $ pip3 install PyQt5
 - $ pip3 install python3-xlib
+- $ pip3 install pyaudio
+- $ sudo ln -s /usr/bin/swig3.0 /usr/bin/swig
 - $ pip3 install pocketsphinx
 - $ sudo apt-get install swig3.0
-- $ sudo ln -s /usr/bin/swig3.0 /usr/bin/swig
 - $ git clone https://github.com/rose-jinyang/LinVAM.git
 ## Usage
 This script must be run with root privilege because it must hook and simulate input devices such as keyboard, mouse etc.