diff --git a/src/blackboard/db.py b/src/blackboard/db.py
index 57dd729..0fa29c2 100644
--- a/src/blackboard/db.py
+++ b/src/blackboard/db.py
@@ -204,7 +204,7 @@ VALID_TRANSITIONS = {
 }
 
 COMMENT_TYPES = frozenset({
-    "general", "handoff", "observation", "rebuttal",
+    "general", "handoff", "observation", "review", "rebuttal",
     "rebuttal_response", "debate_argument", "debate_rebuttal", "debate_judgment",
 })