diff --git a/components/script/Cargo.toml b/components/script/Cargo.toml
index abe76755878..f58356ff9f5 100644
--- a/components/script/Cargo.toml
+++ b/components/script/Cargo.toml
@@ -70,3 +70,4 @@ url = "0.2.16"
 time = "0.1.12"
 bitflags = "*"
 rustc-serialize = "*"
+libc = "*"
diff --git a/components/script/lib.rs b/components/script/lib.rs
index d0419505e9a..35d481d5b76 100644
--- a/components/script/lib.rs
+++ b/components/script/lib.rs
@@ -9,7 +9,6 @@
 #![feature(hash)]
 #![feature(int_uint)]
 #![feature(io)]
-#![feature(libc)]
 #![feature(plugin)]
 #![feature(rustc_private)]
 #![feature(std_misc)]
diff --git a/components/servo/Cargo.lock b/components/servo/Cargo.lock
index f6db2335671..8e5656be4ff 100644
--- a/components/servo/Cargo.lock
+++ b/components/servo/Cargo.lock
@@ -451,8 +451,9 @@ dependencies = [
 [[package]]
 name = "js"
 version = "0.1.0"
-source = "git+https://github.com/servo/rust-mozjs#f01d85186415afdaded8179ba7455534931778ca"
+source = "git+https://github.com/servo/rust-mozjs#db08a4eacdb3d92df9a38c8a5d7ad1e1ee0fef4e"
 dependencies = [
+ "libc 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "mozjs-sys 0.0.0 (git+https://github.com/servo/mozjs)",
 ]
 
@@ -703,6 +704,7 @@ dependencies = [
  "html5ever 0.0.0 (git+https://github.com/servo/html5ever)",
  "hyper 0.1.10 (git+https://github.com/servo/hyper?branch=servo)",
  "js 0.1.0 (git+https://github.com/servo/rust-mozjs)",
+ "libc 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "msg 0.0.1",
  "net 0.0.1",
  "plugins 0.0.1",
diff --git a/ports/cef/Cargo.lock b/ports/cef/Cargo.lock
index 4bbee6a3b44..f07912af54f 100644
--- a/ports/cef/Cargo.lock
+++ b/ports/cef/Cargo.lock
@@ -454,8 +454,9 @@ dependencies = [
 [[package]]
 name = "js"
 version = "0.1.0"
-source = "git+https://github.com/servo/rust-mozjs#f01d85186415afdaded8179ba7455534931778ca"
+source = "git+https://github.com/servo/rust-mozjs#db08a4eacdb3d92df9a38c8a5d7ad1e1ee0fef4e"
 dependencies = [
+ "libc 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "mozjs-sys 0.0.0 (git+https://github.com/servo/mozjs)",
 ]
 
@@ -711,6 +712,7 @@ dependencies = [
  "html5ever 0.0.0 (git+https://github.com/servo/html5ever)",
  "hyper 0.1.10 (git+https://github.com/servo/hyper?branch=servo)",
  "js 0.1.0 (git+https://github.com/servo/rust-mozjs)",
+ "libc 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "msg 0.0.1",
  "net 0.0.1",
  "plugins 0.0.1",
diff --git a/ports/gonk/Cargo.lock b/ports/gonk/Cargo.lock
index 8d0e7620986..6a751b1951c 100644
--- a/ports/gonk/Cargo.lock
+++ b/ports/gonk/Cargo.lock
@@ -374,8 +374,9 @@ dependencies = [
 [[package]]
 name = "js"
 version = "0.1.0"
-source = "git+https://github.com/servo/rust-mozjs#f01d85186415afdaded8179ba7455534931778ca"
+source = "git+https://github.com/servo/rust-mozjs#db08a4eacdb3d92df9a38c8a5d7ad1e1ee0fef4e"
 dependencies = [
+ "libc 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "mozjs-sys 0.0.0 (git+https://github.com/servo/mozjs)",
 ]
 
@@ -618,6 +619,7 @@ dependencies = [
  "html5ever 0.0.0 (git+https://github.com/servo/html5ever)",
  "hyper 0.1.10 (git+https://github.com/servo/hyper?branch=servo)",
  "js 0.1.0 (git+https://github.com/servo/rust-mozjs)",
+ "libc 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "msg 0.0.1",
  "net 0.0.1",
  "plugins 0.0.1",