diff --git a/components/servo/Cargo.lock b/components/servo/Cargo.lock
index 44c4d9080a5..b62ecdd942e 100644
--- a/components/servo/Cargo.lock
+++ b/components/servo/Cargo.lock
@@ -2449,7 +2449,7 @@ source = "git+https://github.com/GuillaumeGomez/video-metadata-rs#c613de6a20c85d
 dependencies = [
  "gcc 0.3.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
diff --git a/ports/cef/Cargo.lock b/ports/cef/Cargo.lock
index d63caa7e42c..4bd06709304 100644
--- a/ports/cef/Cargo.lock
+++ b/ports/cef/Cargo.lock
@@ -2311,7 +2311,7 @@ source = "git+https://github.com/GuillaumeGomez/video-metadata-rs#b5669bc88f3390
 dependencies = [
  "gcc 0.3.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]