diff --git a/README.md b/README.md
index 1efb2bf..4bdcc0b 100644
--- a/README.md
+++ b/README.md
@@ -25,3 +25,7 @@ Fore more details, see [examples](examples) and/or run
 ```sh
 $ cargo run --example personnummer <personnummer>
 ```
+
+## In memoriam
+
+Fredrik "Frozzare" Forsmo (1991-2026) was the initiator, co-founder and a core contributor of the personnummer project. This library carries his work. He is missed.