diff --git a/Cargo.lock b/Cargo.lock
index d326ac34823a..770e73185d23 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -65,7 +65,7 @@ name = "backtrace-sys"
 version = "0.1.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cc 1.0.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -81,7 +81,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "cc"
-version = "1.0.29"
+version = "1.0.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -521,7 +521,7 @@ version = "6.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "cc 1.0.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -863,7 +863,7 @@ dependencies = [
 "checksum backtrace-sys 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)" = "797c830ac25ccc92a7f8a7b9862bde440715531514594a6154e3d4a54dd769b6"
 "checksum bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "228047a76f468627ca71776ecdebd732a3423081fcf5125585bcd7c49886ce12"
 "checksum byteorder 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a019b10a2a7cdeb292db131fc8113e57ea2a908f6e7894b0c3c671893b65dbeb"
-"checksum cc 1.0.29 (registry+https://github.com/rust-lang/crates.io-index)" = "4390a3b5f4f6bce9c1d0c00128379df433e53777fdd30e92f16a529332baec4e"
+"checksum cc 1.0.30 (registry+https://github.com/rust-lang/crates.io-index)" = "d01c69d08ff207f231f07196e30f84c70f1c815b04f980f8b7b01ff01f05eb92"
 "checksum cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "082bb9b28e00d3c9d39cc03e64ce4cea0f1bb9b3fde493f0cbc008472d22bdf4"
 "checksum clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b957d88f4b6a63b9d70d5f454ac8011819c6efa7727858f458ab71c756ce2d3e"
 "checksum cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ddfc5b9aa5d4507acaf872de71051dfd0e309860e88966e1051e462a077aac4f"