diff --git a/README.md b/README.md
index c7a304c5aa..80f85658d0 100644
--- a/README.md
+++ b/README.md
@@ -146,6 +146,10 @@ If you are using Ubuntu on WSL and receive the following message when trying to
 1. _If you are running on an M1 mac, run the following command before you start the installation process:_
    1. _Set the architecture_: `$env /usr/bin/arch -arm64 /bin/zsh ---login`
    1. _Remove all gems before you proceed_: `gem uninstall -aIx`
+1. If `bin/setup` fails with a credentials error:
+   1. Open the `.env` file.
+   1. Update the values of `POSTGRES_USER` and `POSTGRES_PASSWORD`to match your PostgreSQL credentials.
+   1. Run `bin/setup`
 
 ## Running the App / Verifying Installation
 1. `cd casa/`