diff --git a/components/script/dom/dedicatedworkerglobalscope.rs b/components/script/dom/dedicatedworkerglobalscope.rs
index b40fe2afd37..ebf993c60d8 100644
--- a/components/script/dom/dedicatedworkerglobalscope.rs
+++ b/components/script/dom/dedicatedworkerglobalscope.rs
@@ -174,7 +174,7 @@ impl DedicatedWorkerGlobalScope {
             {
                 let _ar = AutoWorkerReset::new(global.r(), worker);
 
-                match runtime.cx.evaluate_script(
+                match runtime.evaluate_script(
                     global.r().reflector().get_jsobject(), source, url.serialize(), 1) {
                     Ok(_) => (),
                     Err(_) => println!("evaluate_script failed")
diff --git a/components/script/dom/workerglobalscope.rs b/components/script/dom/workerglobalscope.rs
index 0aadce50b1c..e1690776ff9 100644
--- a/components/script/dom/workerglobalscope.rs
+++ b/components/script/dom/workerglobalscope.rs
@@ -136,7 +136,7 @@ impl<'a> WorkerGlobalScopeMethods for JSRef<'a, WorkerGlobalScope> {
                 }
             };
 
-            match self.runtime.cx.evaluate_script(
+            match self.runtime.evaluate_script(
                 self.reflector().get_jsobject(), source, url.serialize(), 1) {
                 Ok(_) => (),
                 Err(_) => {
diff --git a/components/servo/Cargo.lock b/components/servo/Cargo.lock
index 8ccbaa35660..1ec434f09bb 100644
--- a/components/servo/Cargo.lock
+++ b/components/servo/Cargo.lock
@@ -579,7 +579,7 @@ dependencies = [
 [[package]]
 name = "js"
 version = "0.1.0"
-source = "git+https://github.com/servo/rust-mozjs#6b43271603d3889725020745d4a949a47b6ac505"
+source = "git+https://github.com/servo/rust-mozjs#774a764770b196ed64e4973744f9d2ff247412b1"
 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/ports/cef/Cargo.lock b/ports/cef/Cargo.lock
index b8ef51a2af7..241db01a3cf 100644
--- a/ports/cef/Cargo.lock
+++ b/ports/cef/Cargo.lock
@@ -581,7 +581,7 @@ dependencies = [
 [[package]]
 name = "js"
 version = "0.1.0"
-source = "git+https://github.com/servo/rust-mozjs#6b43271603d3889725020745d4a949a47b6ac505"
+source = "git+https://github.com/servo/rust-mozjs#774a764770b196ed64e4973744f9d2ff247412b1"
 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/ports/gonk/Cargo.lock b/ports/gonk/Cargo.lock
index 454f971003b..24ef08def57 100644
--- a/ports/gonk/Cargo.lock
+++ b/ports/gonk/Cargo.lock
@@ -479,7 +479,7 @@ dependencies = [
 [[package]]
 name = "js"
 version = "0.1.0"
-source = "git+https://github.com/servo/rust-mozjs#6b43271603d3889725020745d4a949a47b6ac505"
+source = "git+https://github.com/servo/rust-mozjs#774a764770b196ed64e4973744f9d2ff247412b1"
 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)",