diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md
index 97df382bb1177ef6bb96e94eac0dbf523a5fef62..88546695e8838e5ae50e4e7d3b823df51df6bb29 100644
--- a/activerecord/CHANGELOG.md
+++ b/activerecord/CHANGELOG.md
@@ -1,3 +1,8 @@
+*   Alias `ActiveRecord::Relation#left_joins` to
+    `ActiveRecord::Relation#left_outer_joins`.
+
+    *Takashi Kokubun*
+
 *   Use advisory locking to raise a ConcurrentMigrationError instead of
     attempting to migrate when another migration is currently running.