diff --git a/cumulus/network/src/lib.rs b/cumulus/network/src/lib.rs
index f3a04c1bbb..e1d5a73736 100644
--- a/cumulus/network/src/lib.rs
+++ b/cumulus/network/src/lib.rs
@@ -12,6 +12,10 @@ use codec::{Decode, Encode};
 
 use std::marker::PhantomData;
 
+//! Cumulus-specific network implementation.
+//!
+//! Contains message send between collators and logic to process them.
+
 /// Justification that a parachain block is the parachain block candidate of one of the relay chain
 /// validator.
 #[derive(Encode, Decode)]