diff --git a/servo/components/script/script_task.rs b/servo/components/script/script_task.rs
index 12ae363c95be..926d8567b46b 100644
--- a/servo/components/script/script_task.rs
+++ b/servo/components/script/script_task.rs
@@ -80,7 +80,7 @@ use hyper::header::{LastModified, Headers};
 use js::jsapi::{JS_SetWrapObjectCallbacks, JS_SetExtraGCRootsTracer};
 use js::jsapi::{JSContext, JSRuntime, JSObject, JSTracer};
 use js::jsapi::{JS_SetGCCallback, JSGCStatus, JSGC_BEGIN, JSGC_END};
-use js::rust::{Runtime, RtUtils};
+use js::rust::Runtime;
 use url::Url;
 
 use libc;
diff --git a/servo/components/servo/Cargo.lock b/servo/components/servo/Cargo.lock
index 2f95be12aa2f..e2d46c3cb256 100644
--- a/servo/components/servo/Cargo.lock
+++ b/servo/components/servo/Cargo.lock
@@ -579,7 +579,7 @@ dependencies = [
 [[package]]
 name = "js"
 version = "0.1.0"
-source = "git+https://github.com/servo/rust-mozjs#30a1ad31d1ee47a8e4e1ef582e793badfb405fa0"
+source = "git+https://github.com/servo/rust-mozjs#2f745ff00f2ad7fdc89053af9adc99200a8019a1"
 dependencies = [
  "libc 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/servo/ports/cef/Cargo.lock b/servo/ports/cef/Cargo.lock
index 6d3248bbc62e..b3137f2535e4 100644
--- a/servo/ports/cef/Cargo.lock
+++ b/servo/ports/cef/Cargo.lock
@@ -581,7 +581,7 @@ dependencies = [
 [[package]]
 name = "js"
 version = "0.1.0"
-source = "git+https://github.com/servo/rust-mozjs#30a1ad31d1ee47a8e4e1ef582e793badfb405fa0"
+source = "git+https://github.com/servo/rust-mozjs#2f745ff00f2ad7fdc89053af9adc99200a8019a1"
 dependencies = [
  "libc 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/servo/ports/gonk/Cargo.lock b/servo/ports/gonk/Cargo.lock
index 6078ce1206b1..b5053706d5d3 100644
--- a/servo/ports/gonk/Cargo.lock
+++ b/servo/ports/gonk/Cargo.lock
@@ -479,7 +479,7 @@ dependencies = [
 [[package]]
 name = "js"
 version = "0.1.0"
-source = "git+https://github.com/servo/rust-mozjs#30a1ad31d1ee47a8e4e1ef582e793badfb405fa0"
+source = "git+https://github.com/servo/rust-mozjs#2f745ff00f2ad7fdc89053af9adc99200a8019a1"
 dependencies = [
  "libc 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",