diff --git a/Cargo.lock b/Cargo.lock
index 5960b5c9eb83..44a5fdc535c3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3610,7 +3610,7 @@ dependencies = [
 [[package]]
 name = "mozjs"
 version = "0.13.0"
-source = "git+https://github.com/servo/rust-mozjs#2598da7110f752d29f2beedf3e47c71f72a354a3"
+source = "git+https://github.com/servo/rust-mozjs#81c88926aa57f8571b3784216907e4e06363b345"
 dependencies = [
  "cc",
  "lazy_static",
@@ -3623,7 +3623,7 @@ dependencies = [
 [[package]]
 name = "mozjs_sys"
 version = "0.68.1"
-source = "git+https://github.com/servo/mozjs?rev=2392ebc144331184a770bee1f1ac02969946380f#2392ebc144331184a770bee1f1ac02969946380f"
+source = "git+https://github.com/servo/mozjs?rev=ef2d1cc249f2662b2acb31d1c1328d7960161da4#ef2d1cc249f2662b2acb31d1c1328d7960161da4"
 dependencies = [
  "bindgen",
  "cc",
diff --git a/components/script/Cargo.toml b/components/script/Cargo.toml
index 7cdc2e1809af..d6767355f9e1 100644
--- a/components/script/Cargo.toml
+++ b/components/script/Cargo.toml
@@ -21,7 +21,6 @@ webgl_backtrace = ["backtrace", "canvas_traits/webgl_backtrace"]
 js_backtrace = ["backtrace"]
 refcell_backtrace = ["accountable-refcell"]
 uwp = ["js/uwp"]
-vslatestinstalled = ["js/vslatestinstalled"]
 xr-profile = ["webxr-api/profile"]
 
 [build-dependencies]
diff --git a/components/servo/Cargo.toml b/components/servo/Cargo.toml
index ffcb3b83f2ce..22cadd371fab 100644
--- a/components/servo/Cargo.toml
+++ b/components/servo/Cargo.toml
@@ -34,7 +34,6 @@ webgl_backtrace = [
     "canvas/webgl_backtrace",
     "canvas_traits/webgl_backtrace",
 ]
-vslatestinstalled = ["script/vslatestinstalled"]
 media-dummy = ["servo-media-dummy"]
 media-gstreamer = ["servo-media-gstreamer", "gstreamer"]
 xr-profile = ["canvas/xr-profile", "canvas_traits/xr-profile", "script/xr-profile", "webxr/profile"]
diff --git a/ports/glutin/Cargo.toml b/ports/glutin/Cargo.toml
index 80807b6f3f79..90a9ae03e569 100644
--- a/ports/glutin/Cargo.toml
+++ b/ports/glutin/Cargo.toml
@@ -44,7 +44,6 @@ refcell_backtrace = ["libservo/refcell_backtrace"]
 webdriver = ["libservo/webdriver"]
 webgl_backtrace = ["libservo/webgl_backtrace"]
 webrender_debugger = ["libservo/webrender_debugger"]
-vslatestinstalled = ["libservo/vslatestinstalled"]
 xr-profile = ["libservo/xr-profile"]
 
 [target.'cfg(not(target_os = "android"))'.dependencies]
diff --git a/ports/libsimpleservo/api/Cargo.toml b/ports/libsimpleservo/api/Cargo.toml
index 61dc1106de3f..ab5fb69173b8 100644
--- a/ports/libsimpleservo/api/Cargo.toml
+++ b/ports/libsimpleservo/api/Cargo.toml
@@ -52,5 +52,4 @@ refcell_backtrace = ["libservo/refcell_backtrace"]
 webdriver = ["libservo/webdriver"]
 uwp = ["libservo/uwp", "webxr/openxr-api"]
 webgl_backtrace = ["libservo/webgl_backtrace"]
-vslatestinstalled = ["libservo/vslatestinstalled"]
 xr-profile = ["libservo/xr-profile"]
diff --git a/ports/libsimpleservo/capi/Cargo.toml b/ports/libsimpleservo/capi/Cargo.toml
index a782d9523517..196871395233 100644
--- a/ports/libsimpleservo/capi/Cargo.toml
+++ b/ports/libsimpleservo/capi/Cargo.toml
@@ -46,5 +46,4 @@ refcell_backtrace = ["simpleservo/refcell_backtrace"]
 uwp = ["simpleservo/uwp"]
 webdriver = ["simpleservo/webdriver"]
 webgl_backtrace = ["simpleservo/webgl_backtrace"]
-vslatestinstalled = ["simpleservo/vslatestinstalled"]
 xr-profile = ["simpleservo/xr-profile"]