1 files changed, 2 insertions, 0 deletions
diff --git a/TODO b/TODO
index 685c4c5fb2..59765916d2 100644
--- a/TODO
+++ b/TODO
@@ -94,6 +94,8 @@ ext/session
       locked individually.
     * write a network-transparent storage back-end with fallover
       facilities
+    * provide a callback facility which is executed upon encountering
+      an unknown classname during deserialization
 
 ext/sockets
 -----------