diff --git a/Cargo.toml b/Cargo.toml
index fdacaef263..bc1a14e580 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,6 +14,7 @@ complex, rational, range iterators, generic integers, and more!
 """
 
 [dependencies]
+num-traits = { path = "traits" }
 rand = { version = "0.3.8", optional = true }
 rustc-serialize = { version = "0.3.13", optional = true }
 serde = { version = "^0.7.0", optional = true }
diff --git a/src/lib.rs b/src/lib.rs
index c9a30992ad..159f241cb6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -69,6 +69,10 @@ extern crate rand;
 #[cfg(feature = "serde")]
 extern crate serde;
 
+extern crate num_traits;
+// Allow existing code to access traits without changes.
+pub use num_traits as traits;
+
 #[cfg(feature = "bigint")]
 pub use bigint::{BigInt, BigUint};
 #[cfg(feature = "rational")]
@@ -92,7 +96,6 @@ pub mod bigint;
 pub mod complex;
 pub mod integer;
 pub mod iter;
-pub mod traits;
 #[cfg(feature = "rational")]
 pub mod rational;
 
diff --git a/traits/Cargo.toml b/traits/Cargo.toml
new file mode 100644
index 0000000000..3b492db04e
--- /dev/null
+++ b/traits/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "num-traits"
+version = "0.1.0"
+authors = ["The Rust Project Developers"]
+license = "MIT/Apache-2.0"
+homepage = "https://github.com/rust-num/num"
+repository = "https://github.com/rust-num/num"
+documentation = "http://rust-num.github.io/num"
+keywords = ["mathematics", "numerics", "traits"]
+description = """
+A collection of traits for Rust, including implementations on Rust's built-in
+numeric types.
+"""
diff --git a/src/traits.rs b/traits/src/lib.rs
similarity index 100%
rename from src/traits.rs
rename to traits/src/lib.rs