diff --git a/TODO b/TODO
index 468ab2e..4c67c24 100644
--- a/TODO
+++ b/TODO
@@ -1,11 +1,14 @@
 = Ildus ToDo list
 
-* Put Protocol Errors in a separate module, document it
-  better together with the protocol.
+* Put Protocol Errors in a separate module, document it better together
+  with the protocol.
 * Retrieve the system's hostname.
+* Logging support.
 * Increase robustness for and error messages of erroneous commands.
 * Support for multiple domains.
+* Updates to the same address should be discarded (no SOA serial
+  incrementing, etc.).
 
-= Known Issues
+== Known Issues
 
 * ADDA/DELA commands still unimplemented.