From 2acddb6a7ccf1c6d30bcf8d452e7c2bd61a7a36c Mon Sep 17 00:00:00 2001
From: Fabian Neumann <fabian.neumann@outlook.de>
Date: Wed, 3 Jan 2024 13:48:34 +0100
Subject: [PATCH] add release note

---
 doc/release_notes.rst | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/doc/release_notes.rst b/doc/release_notes.rst
index 5ac7925e1..31e492a81 100644
--- a/doc/release_notes.rst
+++ b/doc/release_notes.rst
@@ -81,6 +81,9 @@ Upcoming Release
 
 * Remove HELMETH option.
 
+* Print Irreducible Infeasible Subset (IIS) if model is infeasible. Only for
+  solvers with IIS support.
+
 **Bugs and Compatibility**
 
 * A bug preventing custom powerplants specified in ``data/custom_powerplants.csv`` was fixed. (https://github.com/PyPSA/pypsa-eur/pull/732)