diff --git a/src/track.rs b/src/track.rs
index 89b8410..1770d41 100644
--- a/src/track.rs
+++ b/src/track.rs
@@ -29,6 +29,7 @@ impl TypeMapKey for InfoSent {
 
 pub struct Sent;
 
+#[allow(clippy::type_complexity)]
 impl TypeMapKey for Sent {
    type Value = Arc<Mutex<HashMap<(ChannelId, MessageId), (ChannelId, MessageId)>>>;
 }