diff --git a/components/servo/Cargo.lock b/components/servo/Cargo.lock
index 935e603067a..35e6f722b92 100644
--- a/components/servo/Cargo.lock
+++ b/components/servo/Cargo.lock
@@ -1252,7 +1252,7 @@ dependencies = [
 [[package]]
 name = "mozjs_sys"
 version = "0.0.0"
-source = "git+https://github.com/servo/mozjs#5ac99916d4b9c1d1c2ffc896619f1daaf8fc84c4"
+source = "git+https://github.com/servo/mozjs#3122a1e1a80b78377ae1ce8e7edd4ad3bcbb3d65"
 dependencies = [
  "libc 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "libz-sys 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/ports/cef/Cargo.lock b/ports/cef/Cargo.lock
index b91f233c3bb..a8062c8a110 100644
--- a/ports/cef/Cargo.lock
+++ b/ports/cef/Cargo.lock
@@ -1164,7 +1164,7 @@ dependencies = [
 [[package]]
 name = "mozjs_sys"
 version = "0.0.0"
-source = "git+https://github.com/servo/mozjs#5ac99916d4b9c1d1c2ffc896619f1daaf8fc84c4"
+source = "git+https://github.com/servo/mozjs#3122a1e1a80b78377ae1ce8e7edd4ad3bcbb3d65"
 dependencies = [
  "libc 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "libz-sys 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/ports/gonk/Cargo.lock b/ports/gonk/Cargo.lock
index 032c5ed4420..61c19890eef 100644
--- a/ports/gonk/Cargo.lock
+++ b/ports/gonk/Cargo.lock
@@ -1146,7 +1146,7 @@ dependencies = [
 [[package]]
 name = "mozjs_sys"
 version = "0.0.0"
-source = "git+https://github.com/servo/mozjs#5ac99916d4b9c1d1c2ffc896619f1daaf8fc84c4"
+source = "git+https://github.com/servo/mozjs#3122a1e1a80b78377ae1ce8e7edd4ad3bcbb3d65"
 dependencies = [
  "libc 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "libz-sys 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",