diff --git a/README.md b/README.md
index fd2c1cc..53c3934 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,10 @@ Model artifacts used by the [Local Privacy Runtime](https://git.a75.it/andrearuf
 
 ## rizzo-pii-0.3B — revision d4f9893
 
+**Primary source:** the same files are published on Hugging Face as
+[`andrearuffini/local-privacy-runtime-pii-detector`](https://huggingface.co/andrearuffini/local-privacy-runtime-pii-detector)
+(revision `c1ccfbb46b80b73865014e72dea47762934fa7f4`); this package is the mirror.
+
 Published as the generic package
 [`rizzo-pii-0.3B` version `d4f9893`](https://git.a75.it/andrearuffini/-/packages/generic/rizzo-pii-0.3B/d4f9893).