diff --git a/README.md b/README.md
index e08ab4b..a16a6f2 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,13 @@ SPDX-License-Identifier: GPL-3.0-or-later
 
 Set loaded spool & filament in klipper from NFC/RFID tags.
 
+## Prepare for running nfc2klipper
+
+In the cloned repository's dir run:
+```sh
+virtualenv venv
+venv/bin/pip3 install -r requirements.txt
+```
 
 ## Preparing an NFC reader