diff -r 0a574315af3e -r 4f746d8966dd app/views/issues/show.api.rsb
--- a/app/views/issues/show.api.rsb
+++ b/app/views/issues/show.api.rsb
@@ -22,6 +22,7 @@
 
   api.created_on @issue.created_on
   api.updated_on @issue.updated_on
+  api.closed_on @issue.closed_on
 
   render_api_issue_children(@issue, api) if include_in_api_response?('children')
 
@@ -64,4 +65,10 @@
       end
     end
   end if include_in_api_response?('journals')
+
+  api.array :watchers do
+    @issue.watcher_users.each do |user|
+      api.user :id => user.id, :name => user.name
+    end
+  end if include_in_api_response?('watchers') && User.current.allowed_to?(:view_issue_watchers, @issue.project)
 end