From ec9dce583ba01a9ffc2373b67a53809db72ded3a Mon Sep 17 00:00:00 2001
From: Prathamesh Sonpatki <csonpatki@gmail.com>
Date: Sat, 9 Jan 2016 08:17:46 +0530
Subject: Added missing CHANGELOG entry for
 https://github.com/rails/rails/pull/22976

[ci skip]
---
 activerecord/CHANGELOG.md | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md
index 5790528e97..3199951f68 100644
--- a/activerecord/CHANGELOG.md
+++ b/activerecord/CHANGELOG.md
@@ -1,3 +1,11 @@
+*   Use `version` column as primary key for schema_migrations table because
+    schema_migrations versions are guaranteed to be unique.
+
+    This makes it possible to use `update_attributes` on models that do
+    not have a primary key.
+
+    *Richard Schneeman*
+
 *   Add short-hand methods for text and blob types in MySQL.
 
     In Pg and Sqlite3, `:text` and `:binary` have variable unlimited length.
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