diff --git a/src/lib.rs b/src/lib.rs
index 975e454..59116a2 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -53,7 +53,7 @@
 //! ```
 
 
-extern crate num_traits;
+pub extern crate num_traits;
 
 pub use std::option::Option;
 pub use num_traits::FromPrimitive;