diff --git a/README.md b/README.md
index 0680778..0722e84 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ reddit-magnet [OPTIONS]
 
 ## Configuration
 
-Reddit Magnet uses a TOML configuration file. By default, it looks for a configuration file at `$XDG_CONFIG_HOME/reddit-magnet/config.toml`, but you can specify a different location using the `--config` option.
+Reddit Magnet uses a TOML configuration file. By default, it looks for a configuration file at `$XDG_CONFIG_HOME/reddit-magnet/config.toml`, but you can specify a different location using the `--config` option. Note that every option can be suffixed with `_file`, and the value set to a path - at runtime, this file will be read and its content will be assumed as the value for the option. This allows storing sensitive credentials somewhere else.
 
 ### Example configuration
 
@@ -44,6 +44,7 @@ host = "http://localhost"
 port = 9091
 username = "username"  # Optional
 password = "password"  # Optional
+# Could also be password_file = "/run/secrets/reddit-magnet/transmission/password"
 download_dir = "/downloads"  # Optional
 
 # BitMagnet configuration