diff --git a/src/lib.rs b/src/lib.rs
index d130365..ae40890 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -186,7 +186,11 @@ impl FromStr for Did {
 /// Which method does this [`Did`] represent?
 ///
 /// See [`Did::method()`] to get the string representation (especially for [`DidKind::Other`]).
+///
+/// Atproto currently officially supports `did:plc` and `did:web`,
+/// but more methods may be supported in the future.
 #[derive(Copy, Clone, Debug, Eq, PartialEq, Hash)]
+#[non_exhaustive]
 pub enum DidKind {
     Plc,
     Web,