diff --git a/README.md b/README.md
index 0ad7dda2854..6c3dab47a48 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ against a released version of Rust will not work, nor will the Rust
 'master' branch. The commit below will *probably* work. If it does not
 then the topic in #servo might know better.
 
-* Last known-good Rust commit: 94f05c1
+* Last known-good Rust commit: 13c01dd
 
 [rust]: http://www.rust-lang.org
 
diff --git a/src/rust-glut b/src/rust-glut
index 9b8febc24a9..51e8805aedd 160000
--- a/src/rust-glut
+++ b/src/rust-glut
@@ -1 +1 @@
-Subproject commit 9b8febc24a910dd3b6e905f85ebf9808ff8ec905
+Subproject commit 51e8805aedd9ba7d4b3c7f794741d4a0a9b225e7
diff --git a/src/rust-mozjs b/src/rust-mozjs
index cdedc9a50d0..95f701540d9 160000
--- a/src/rust-mozjs
+++ b/src/rust-mozjs
@@ -1 +1 @@
-Subproject commit cdedc9a50d0c59de945867c72f15e9694f7a73e9
+Subproject commit 95f701540d9b7171d46d041095bbe583710b4e2d
diff --git a/src/servo/dom/bindings/utils.rs b/src/servo/dom/bindings/utils.rs
index 6b0953d76b0..09c82276536 100644
--- a/src/servo/dom/bindings/utils.rs
+++ b/src/servo/dom/bindings/utils.rs
@@ -95,7 +95,7 @@ extern fn has_instance(_cx: *JSContext, obj: **JSObject, v: *JSVal, bp: *mut JSB
     return 1;
 }
 
-pub fn prototype_jsclass(name: ~str) -> fn(compartment: &bare_compartment) -> JSClass {
+pub fn prototype_jsclass(name: ~str) -> @fn(compartment: &bare_compartment) -> JSClass {
     |compartment: &bare_compartment, move name| {
         {name: compartment.add_name(copy name),
          flags: 0,
@@ -124,7 +124,7 @@ pub fn prototype_jsclass(name: ~str) -> fn(compartment: &bare_compartment) -> JS
 }
 
 pub fn instance_jsclass(name: ~str, finalize: *u8)
-    -> fn(compartment: &bare_compartment) -> JSClass {
+    -> @fn(compartment: &bare_compartment) -> JSClass {
     |compartment: &bare_compartment, move name| {
         {name: compartment.add_name(copy name),
          flags: JSCLASS_HAS_RESERVED_SLOTS(1),