diff --git a/src/fiber_package/refs.py b/src/fiber_package/refs.py
index 70879b1..b6ddd0a 100644
--- a/src/fiber_package/refs.py
+++ b/src/fiber_package/refs.py
@@ -12,7 +12,8 @@ CollectionName = Literal[
     "committee",
     "committee_edition",
     "guild",
-    "signup"
+    "signup",
+    "communication"
 ]
 
 C = TypeVar("C", bound=str)