diff --git a/TODO b/TODO
index 8ff8203..19a3b38 100644
--- a/TODO
+++ b/TODO
@@ -6,3 +6,6 @@
 * --spin needs 4 ssh connections when bootstrapping a new host
   that does not have the git repo yet. Should be possible to get that
   down to 1.
+* Make a way to express that a Property can be reverted (ie, installing a
+  packages reverses to removing it). Then `reverted property` can be
+  used to disable old properties.