1 files changed, 26 insertions, 2 deletions
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md
index 6683b58c36..ad65efc7bc 100644
--- a/activerecord/CHANGELOG.md
+++ b/activerecord/CHANGELOG.md
@@ -1,7 +1,31 @@
-*   Make AR::Base #increment! and decrement! concurrency safe
+*   Concurrent `AR::Base#increment!` and `#decrement!` on the same record
+    are all reflected in the database rather than overwriting each other.
 
     *Bogdan Gusiev*
 
+*   Avoid leaking the first relation we call `first` on, per model.
+
+    Fixes #21921.
+
+    *Matthew Draper*, *Jean Boussier*
+
+*   Remove unused `pk_and_sequence_for` in AbstractMysqlAdapter.
+
+    *Ryuta Kamizono*
+
+*   Allow fixtures files to set the model class in the YAML file itself.
+
+    To load the fixtures file `accounts.yml` as the `User` model, use:
+
+          _fixture:
+            model_class: User
+          david:
+            name: David
+
+    Fixes #9516.
+
+    *Roque Pinel*
+
 *   Don't require a database connection to load a class which uses acceptance
     validations.
 
@@ -1108,7 +1132,7 @@
     In the past, returning `false` in an Active Record `before_` callback had the
     side effect of halting the callback chain.
     This is not recommended anymore and, depending on the value of the
-    `config.active_support.halt_callback_chains_on_return_false` option, will
+    `ActiveSupport.halt_callback_chains_on_return_false` option, will
     either not work at all or display a deprecation warning.
 
     *claudiob*