diff --git a/README.md b/README.md
index 3039bfc..2d49e35 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ The easiest way to use Cashu is to install the package it via pip:
 pip install cashu
 ```
 
-To update Cashu, use `pip install cashu -U`. If you have problems running the command above on Ubuntu, run `sudo apt install -y pip pkg-config libpq-dev`.
+To update Cashu, use `pip install cashu -U`. If you have problems running the command above on Ubuntu, run `sudo apt install -y pip pkg-config libpq-dev`. On macOS, run `brew install postgresql`.
 
 You can skip the entire next section about Poetry and jump right to [Using Cashu](#using-cashu).