diff --git a/.env.example b/.env.example
index bd1130f..362c4b3 100644
--- a/.env.example
+++ b/.env.example
@@ -5,3 +5,8 @@ API_PWD='dummy&P@ssw0rd!'
 SENTRY_DSN=
 DEBUG=
 LOGIN=
+
+S3_ENDPOINT_URL=your_s3_url
+S3_ACCESS_KEY=your_s3_access_key
+S3_SECRET_KEY=your_s3_secret_key
+S3_REGION=your_s3_region
diff --git a/README.md b/README.md
index e6699ab..5af38ad 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,10 @@ This file will have to hold the following information:
 - `API_URL`: URL to the endpoint of [Pyronear Alert API](https://github.com/pyronear/pyro-api)
 - `API_LOGIN`: your login for the API
 - `API_PWD`: your password for the API
+- `S3_ENDPOINT_URL`: your s3 url (S3 settings to manage occlusion masks)
+- `S3_ACCESS_KEY` : your s3 access key id
+- `S3_SECRET_KEY`: your s3 secret key
+- `S3_REGION`: s3 region
 
 Optionally, the following information can be added:
 - `SENTRY_DSN`: the URL of the [Sentry](https://sentry.io/) project, which monitors back-end errors and report them back.