diff --git a/components/servo/Cargo.lock b/components/servo/Cargo.lock
index d1cef1d36d84..aea8413c444e 100644
--- a/components/servo/Cargo.lock
+++ b/components/servo/Cargo.lock
@@ -1112,7 +1112,7 @@ dependencies = [
 [[package]]
 name = "js"
 version = "0.1.3"
-source = "git+https://github.com/servo/rust-mozjs#223b907b8288e672ef304aa558f521b8f7f16762"
+source = "git+https://github.com/servo/rust-mozjs#4f25903539e29f9f34391f78ddfdf3f8f6f60ece"
 dependencies = [
  "cmake 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/ports/cef/Cargo.lock b/ports/cef/Cargo.lock
index 849de2432d66..122568fa8f68 100644
--- a/ports/cef/Cargo.lock
+++ b/ports/cef/Cargo.lock
@@ -1019,7 +1019,7 @@ dependencies = [
 [[package]]
 name = "js"
 version = "0.1.3"
-source = "git+https://github.com/servo/rust-mozjs#223b907b8288e672ef304aa558f521b8f7f16762"
+source = "git+https://github.com/servo/rust-mozjs#4f25903539e29f9f34391f78ddfdf3f8f6f60ece"
 dependencies = [
  "cmake 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",