1 files changed, 20 insertions, 0 deletions
diff --git a/activesupport/CHANGELOG.md b/activesupport/CHANGELOG.md
index 5729a98b99..b2ab5ffcbe 100644
--- a/activesupport/CHANGELOG.md
+++ b/activesupport/CHANGELOG.md
@@ -1,3 +1,23 @@
+*   `ActiveSupport::Duration` supports weeks and hours.
+
+        [1.hour.inspect, 1.hour.value, 1.hour.parts]
+        # => ["3600 seconds", 3600, [[:seconds, 3600]]]   # Before
+        # => ["1 hour", 3600, [[:hours, 1]]]              # After
+
+        [1.week.inspect, 1.week.value, 1.week.parts]
+        # => ["7 days", 604800, [[:days, 7]]]             # Before
+        # => ["1 week", 604800, [[:weeks, 1]]]            # After
+
+    This brings us into closer conformance with ISO8601 and relieves some
+    astonishment about getting `1.hour.inspect # => 3600 seconds`.
+
+    Compatibility: The duration's `value` remains the same, so apps using
+    durations are oblivious to the new time periods. Apps, libraries, and
+    plugins that work with the internal `parts` hash will need to broaden
+    their time period handling to cover hours & weeks.
+
+    *Andrey Novikov*
+
 *   Fix behavior of JSON encoding for `Exception`.
 
     *namusyaka*