diff --git a/.env.template b/.env.template
index 750ff2f..1fd2bc4 100644
--- a/.env.template
+++ b/.env.template
@@ -10,3 +10,9 @@ PLANFIX_TOKEN=REQUIRED
 # Poetry (Gitlab Auth Token for PyPi)
 POETRY_USERNAME=REQUIRED
 POETRY_PASSWORD=REQUIRED
+
+# S3
+S3_ACCESS_KEY=REQUIRED
+S3_SECRET_ACCESS_KEY=REQUIRED
+S3_UPLOAD_FILE_BUCKET=REQUIRED
+S3_PUBLIC_URL=REQUIRED. Example: https://s3.amazonaws.com/
diff --git a/chain_service/settings.py b/chain_service/settings.py
index 33bb017..42ce5d6 100644
--- a/chain_service/settings.py
+++ b/chain_service/settings.py
@@ -7,5 +7,9 @@ class Settings(BaseSettings):
     database_name: Optional[str] = "chain-db"
     planfix_hostname: str
     planfix_token: str
+    s3_access_key: str
+    s3_secret_access_key: str
+    s3_upload_file_bucket: str
+    s3_public_url: str
 
     model_config = SettingsConfigDict(env_file=".env")