diff --git a/README.md b/README.md
index ae5e2b3..0d47f7b 100644
--- a/README.md
+++ b/README.md
@@ -34,6 +34,12 @@ python -m virtualenv .venv
 source .venv/bin/activate
 ```
 
+We depend on PortAudio for the `pyaudio` package, so install it with:
+
+```bash
+sudo apt install -y portaudio19-dev
+```
+
 Install the required packages with
 
 ```bash