diff --git a/unmnemonic_devices_vrs/src/config.rs b/unmnemonic_devices_vrs/src/config.rs
index 219f7f14..ff383271 100644
--- a/unmnemonic_devices_vrs/src/config.rs
+++ b/unmnemonic_devices_vrs/src/config.rs
@@ -1,3 +1,4 @@
+// Adapted from https://dev.to/bdhobare/managing-application-config-in-rust-23ai
 use std::collections::HashMap;
 
 #[derive(Debug, Default)]