diff --git a/doc/release_notes.rst b/doc/release_notes.rst
index 2a009fe5..325462ad 100644
--- a/doc/release_notes.rst
+++ b/doc/release_notes.rst
@@ -11,6 +11,8 @@ Release Notes
 .. Upcoming Release
 .. ================
 
+* bugfix: The oil generator was incorrectly dropped when the config `oil_refining_emissions` was greater than zero. This was the default behaviour in 0.12.0.
+
 PyPSA-Eur 0.12.0 (30th August 2024)
 ===================================