diff --git a/README.md b/README.md
index 0949863..774f8f7 100644
--- a/README.md
+++ b/README.md
@@ -5,10 +5,27 @@
 Install dependencies with `bundle install` and `yarn --cwd client install` (or enter client directory and execute `yarn install`)
 
 Build docker image with `docker build -t roraccounting .`
+
 ## Running
+
 Start docker container with Postgres DB (if not already running) : `yarn run dev-db` or
 `docker run --name gangstadb -d -p 5432:5432 -e POSTGRES_PASSWORD=docker -e POSTGRES_DB=roraccounting_development roraccounting`
 
-Start backend server : `yarn run server` or `PORT=3001 bundle exec rails s`
+Start backend server : `BASIC_AUTH_USERNAME=user BASIC_AUTH_PASSWORD=pass yarn run server` or `BASIC_AUTH_USERNAME=user BASIC_AUTH_PASSWORD=pass PORT=3001 bundle exec rails s`
 
 Start frontend with : `yarn run client` or `PORT=3000 yarn --cwd client start`
+
+### Note about authentication
+
+Authentication is currently basic auth, note ENV variables in starting backend server commands! At the moment, loading 
+from .ENV file is not supported
+
+## Heroku Deploy Procedure
+
+Add `BASIC_AUTH_USERNAME` and `BASIC_AUTH_PASSWORD` ENV variables to the Heroku.
+
+Deploy master branch from local repository to the heroku : `git push heroku master` (if heroku is name of the heroku remote)
+
+(For testing purposes)
+Deploy non-master branch from local repository to the heroku : `git push heroku other-branch:master`
+