diff --git a/src/lib.rs b/src/lib.rs
index 2d4eb80..8aeb6a8 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -14,7 +14,7 @@
 
 
 mod bounded;
-//mod natural;
+mod natural;
 mod number;
 mod one;
 mod zero;
@@ -22,7 +22,7 @@ mod zero;
 
 
 pub use self::bounded::Bounded;
-//pub use self::natural::Natural;
+pub use self::natural::Natural;
 pub use self::number::Number;
 pub use self::one::One;
 pub use self::zero::Zero;