Amend the CHANGELOG

activejob/CHANGELOG.md

+## Rails 5.1.0.alpha ##
+
+*   Added declarative exception handling via ActiveJob::Base.retry_on and ActiveJob::Base.discard_on. 
+
+    Examples:
+
+        class RemoteServiceJob < ActiveJob::Base
+          retry_on CustomAppException # defaults to 3s wait, 5 attempts
+          retry_on AnotherCustomAppException, wait: ->(executions) { executions * 2 }
+          retry_on ActiveRecord::StatementInvalid, wait: 5.seconds, attempts: 3
+          retry_on Net::OpenTimeout, wait: :exponentially_longer, attempts: 10
+          discard_on ActiveJob::DeserializationError
+
+          def perform(*args)
+            # Might raise CustomAppException or AnotherCustomAppException for something domain specific
+            # Might raise ActiveRecord::StatementInvalid when a local db deadlock is detected
+            # Might raise Net::OpenTimeout when the remote service is down
+          end
+        end
+
+    *DHH*
 
 Please check [5-0-stable](https://github.com/rails/rails/blob/5-0-stable/activejob/CHANGELOG.md) for previous changes.