From a1416f99fa2c898e06695f1ae484247725fdca3b Mon Sep 17 00:00:00 2001
From: Martyn Gigg <martyn.gigg@gmail.com>
Date: Thu, 3 May 2018 08:26:19 +0100
Subject: [PATCH] Add release note regarding ALF IDF update

---
 docs/source/release/v3.13.0/framework.rst | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/docs/source/release/v3.13.0/framework.rst b/docs/source/release/v3.13.0/framework.rst
index f866c88b754..536b6d28805 100644
--- a/docs/source/release/v3.13.0/framework.rst
+++ b/docs/source/release/v3.13.0/framework.rst
@@ -9,6 +9,10 @@ Framework Changes
     putting new features at the top of the section, followed by
     improvements, followed by bug fixes.
 
+Instrument Definition Updates
+-----------------------------
+
+- The ALF IDF has been updated following a detector array alteration.
 
 Algorithms
 ----------
-- 
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