diff --git a/src/lib.rs b/src/lib.rs
index 79c098579d..f7638bc6ac 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -532,7 +532,7 @@ pub use offset::LocalResult;
 #[doc(inline)]
 pub use offset::{FixedOffset, Offset, TimeZone, Utc};
 
-mod round;
+pub mod round;
 pub use round::{DurationRound, RoundingError, SubsecRound};
 
 mod weekday;
diff --git a/src/round.rs b/src/round.rs
index 795ffb04cd..4de1de60c8 100644
--- a/src/round.rs
+++ b/src/round.rs
@@ -1,6 +1,8 @@
 // This is a part of Chrono.
 // See README.md and LICENSE.txt for details.
 
+//! Functionality for rounding or truncating a `DateTime` by a `Duration`.
+
 use crate::datetime::DateTime;
 use crate::duration::Duration;
 use crate::NaiveDateTime;