diff --git a/README.md b/README.md
index c4769540..7eb418fd 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,7 @@ Node for [Squeak protocol](https://github.com/yzernik/squeak/blob/master/docs/PR
 * an LND node
 * Python 3.6 or later
 * a Tor SOCKS5 proxy (you can open Tor Browser and run it in the background)
+* libpq-dev (`sudo apt install libpq-dev` on ubuntu)
 
 #### Steps
 - Update the **config.ini** file and fill in the relevant sections to connect to your bitcoin node and lnd node: