diff --git a/mk/crates.mk b/mk/crates.mk
index b447dbda9e08e..f3d71da9eaa87 100644
--- a/mk/crates.mk
+++ b/mk/crates.mk
@@ -49,7 +49,7 @@
 # automatically generated for all stage/host/target combinations.
 ################################################################################
 
-TARGET_CRATES := std extra green rustuv native flate arena glob term
+TARGET_CRATES := std extra green rustuv native flate arena glob term semver
 HOST_CRATES := syntax rustc rustdoc
 CRATES := $(TARGET_CRATES) $(HOST_CRATES)
 TOOLS := compiletest rustdoc rustc
@@ -66,6 +66,7 @@ DEPS_flate := std native:miniz
 DEPS_arena := std extra
 DEPS_glob := std
 DEPS_term := std
+DEPS_semver := std
 
 TOOL_DEPS_compiletest := extra green rustuv
 TOOL_DEPS_rustdoc := rustdoc green rustuv
diff --git a/src/doc/index.md b/src/doc/index.md
index 730c9c744f6f6..a639ca16f35f7 100644
--- a/src/doc/index.md
+++ b/src/doc/index.md
@@ -40,6 +40,7 @@ li {list-style-type: none; }
 * [The `arena` allocation library](arena/index.html)
 * [The `flate` compression library](flate/index.html)
 * [The `glob` file path matching library](glob/index.html)
+* [The `semver` version collation library](semver/index.html)
 * [The `term` terminal-handling library](term/index.html)
 
 # Tooling
diff --git a/src/libextra/lib.rs b/src/libextra/lib.rs
index e2a4b52c810d2..d95a770e57902 100644
--- a/src/libextra/lib.rs
+++ b/src/libextra/lib.rs
@@ -78,7 +78,6 @@ pub mod rational;
 #[path="num/complex.rs"]
 pub mod complex;
 pub mod stats;
-pub mod semver;
 pub mod hex;
 pub mod uuid;
 
diff --git a/src/libextra/semver.rs b/src/libsemver/lib.rs
similarity index 99%
rename from src/libextra/semver.rs
rename to src/libsemver/lib.rs
index 0faf4ee664eaa..01feb1c8c0d48 100644
--- a/src/libextra/semver.rs
+++ b/src/libsemver/lib.rs
@@ -28,6 +28,11 @@
 //! An example version number with all five components is
 //! `0.8.1-rc.3.0+20130922.linux`.
 
+#[crate_id = "semver#0.10-pre"];
+#[crate_type = "rlib"];
+#[crate_type = "dylib"];
+#[license = "MIT/ASL2"];
+
 use std::char;
 use std::cmp;
 use std::option::{Option, Some, None};