diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md
index a4cf6023e1ff565b610873c9124b31bef16a6c7f..be96f9fa2a814c54986a663df4b00be6a70fadaa 100644
--- a/activerecord/CHANGELOG.md
+++ b/activerecord/CHANGELOG.md
@@ -1,3 +1,7 @@
+*   Add ActiveRecord `#second_to_last` and `#third_to_last` methods.
+
+    *Brian Christian*
+
 *   Added `numeric` helper into migrations.
 
     Example:
diff --git a/activesupport/CHANGELOG.md b/activesupport/CHANGELOG.md
index bd333da0814cb801c0415835640ccacb94d91772..3d4cc8fae6298bab7ff82185e2b50c0fc89d2f6c 100644
--- a/activesupport/CHANGELOG.md
+++ b/activesupport/CHANGELOG.md
@@ -1,3 +1,7 @@
+*   Add `Array#second_to_last` and `Array#third_to_last` methods.
+
+    *Brian Christian*
+
 *  Fix regression in `Hash#dig` for HashWithIndifferentAccess.
    *Jon Moss*