diff --git a/.env.sample b/.env.sample
index fafde67..166e409 100644
--- a/.env.sample
+++ b/.env.sample
@@ -53,6 +53,14 @@ MAIL_FROM=admin@example.com
 # error reporting
 SENTRY_DSN=
 
+# Store uploads in S3-compatible service
+# UPLOADS_S3_BUCKET=
+# UPLOADS_S3_ACCESS_KEY_ID=
+# UPLOADS_S3_SECRET_ACCESS_KEY=
+# UPLOADS_S3_REGION=fr-par
+# UPLOADS_S3_HOST=s3.fr-par.scw.cloud
+# UPLOADS_S3_SCHEME=https://
+
 # Bonfire extensions configs:
 WEB_PUSH_SUBJECT=mailto:admin@example.com
 WEB_PUSH_PUBLIC_KEY=xyz
diff --git a/compose.yml b/compose.yml
index 1c56e27..fd6d2b8 100644
--- a/compose.yml
+++ b/compose.yml
@@ -36,6 +36,12 @@ services:
       - ERLANG_COOKIE
       - REPLACE_OS_VARS
       - LIVEVIEW_ENABLED
+      - UPLOADS_S3_BUCKET
+      - UPLOADS_S3_ACCESS_KEY_ID
+      - UPLOADS_S3_SECRET_ACCESS_KEY
+      - UPLOADS_S3_REGION
+      - UPLOADS_S3_HOST
+      - UPLOADS_S3_SCHEME
     secrets: 
       - postgres_password
       - secret_key_base