diff --git a/README.md b/README.md
index 2c81cca..b199b40 100644
--- a/README.md
+++ b/README.md
@@ -61,6 +61,10 @@ echo "POSSIM_HOSTNAME=possim.devel" >> .env
 echo "COMPOSE_FILE=compose-host.yaml" > .env
 echo "POSSIM_HOSTNAME=127.0.0.1" >> .env
 ```
+* If running on OrbStack use the following hostname instead:
+```bash
+echo "POSSIM_HOSTNAME=possim.${COMPOSE_PROJECT_NAME}.orb.local" >> .env
+```
 
 Once you've set up your env you can get the privatenet up and running using: