diff --git a/crates/lb/src/chan.rs b/crates/lb/src/chan.rs
index 96cbc3b..f4ab890 100644
--- a/crates/lb/src/chan.rs
+++ b/crates/lb/src/chan.rs
@@ -1,4 +1,4 @@
-//! Channel library
+//! # Channel library
 //!
 //! The `lb:chan` library provides primitives for asynchronous communication between tasks via
 //! message passing channels.
diff --git a/crates/lb/src/net.rs b/crates/lb/src/net.rs
index 49d3856..49ac1d7 100644
--- a/crates/lb/src/net.rs
+++ b/crates/lb/src/net.rs
@@ -1,4 +1,4 @@
-//! Networking library
+//! # Networking library
 //!
 //! The `lb:net` library provides an asynchronous network API for creating TCP or UDP servers and
 //! clients.
diff --git a/crates/lb/src/task.rs b/crates/lb/src/task.rs
index 6f540ae..a4b1f99 100644
--- a/crates/lb/src/task.rs
+++ b/crates/lb/src/task.rs
@@ -1,4 +1,4 @@
-//! Task library
+//! # Task library
 //!
 //! The `lb:task` library primitives for asynchronous communication between tasks via message
 //! passing channels.