diff --git a/Cargo.lock b/Cargo.lock
index c5c1b77..325d973 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1554,6 +1554,7 @@ version = "0.3.0"
 dependencies = [
  "bech32",
  "ewebsock",
+ "hashbrown",
  "hex",
  "mio",
  "nostr 0.37.0",
diff --git a/crates/enostr/Cargo.toml b/crates/enostr/Cargo.toml
index a019aa3..274d62f 100644
--- a/crates/enostr/Cargo.toml
+++ b/crates/enostr/Cargo.toml
@@ -20,3 +20,4 @@ url = { workspace = true }
 mio = { workspace = true }
 tokio = { workspace = true }
 tokenator = { workspace = true }
+hashbrown = { workspace = true }
\ No newline at end of file
diff --git a/crates/enostr/src/note.rs b/crates/enostr/src/note.rs
index ed17848..1582d4b 100644
--- a/crates/enostr/src/note.rs
+++ b/crates/enostr/src/note.rs
@@ -143,3 +143,9 @@ impl<'de> Deserialize<'de> for NoteId {
         NoteId::from_hex(&s).map_err(serde::de::Error::custom)
     }
 }
+
+impl hashbrown::Equivalent<NoteId> for &[u8; 32] {
+    fn equivalent(&self, key: &NoteId) -> bool {
+        self.as_slice() == key.bytes()
+    }
+}