diff --git a/bittorrent_udp/src/lib.rs b/bittorrent_udp/src/lib.rs
index 089404b..782e516 100644
--- a/bittorrent_udp/src/lib.rs
+++ b/bittorrent_udp/src/lib.rs
@@ -1,3 +1,5 @@
+//! UDP BitTorrent tracker protocol structures
+
 #[cfg(test)]
 extern crate quickcheck;
 #[cfg(test)]