diff --git a/zingo-sync/src/lib.rs b/zingo-sync/src/lib.rs
index da19c3aaa..cf2f141fa 100644
--- a/zingo-sync/src/lib.rs
+++ b/zingo-sync/src/lib.rs
@@ -5,7 +5,7 @@
 //!  - Sync: Observation of a consensus state
 //!  - Consensus State:  Eventually consistent global agreement
 //!  - Key-Enabled (keyed): Sync where the observer owns keys that reveal hidden information
-//!  - Keyless: The observer doesn't have keys
+//!  - Explore (not yet supported): sync of public data
 //!
 //! Entrypoint: [`crate::sync::sync`]