diff --git a/TODO b/TODO
index a8a8fb1..29d5a6c 100644
--- a/TODO
+++ b/TODO
@@ -1,6 +1,7 @@
  * Implement a lookup mechanism that monitors the A record of hostnames in
    the configuration and don't use the Hostname datatype since it does a
    lookup when parsing the configuration file which might fail due to a
    temporary glitch.
  * Increase robustness by not failing with a weird error message ("list index
    out of range") when there are no connections to the rating engine.
+ * Implement support for DebitBalance for SIP MESSAGE (SMS)