diff --git a/Cargo.lock b/Cargo.lock
index 4dbcc8c..212eba3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -58,7 +58,7 @@ dependencies = [
 
 [[package]]
 name = "cc"
-version = "1.0.57"
+version = "1.0.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -109,7 +109,7 @@ name = "generator"
 version = "0.6.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cc 1.0.57 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.58 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.72 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -231,7 +231,7 @@ version = "0.14.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "cc 1.0.57 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.58 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.72 (registry+https://github.com/rust-lang/crates.io-index)",
  "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -243,7 +243,7 @@ version = "0.16.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "cc 1.0.57 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.58 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.72 (registry+https://github.com/rust-lang/crates.io-index)",
  "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -378,7 +378,7 @@ name = "ring"
 version = "0.16.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cc 1.0.57 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.58 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.72 (registry+https://github.com/rust-lang/crates.io-index)",
  "once_cell 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -704,7 +704,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 name = "vpncloud"
 version = "1.4.0"
 dependencies = [
- "cc 1.0.57 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.58 (registry+https://github.com/rust-lang/crates.io-index)",
  "daemonize 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "igd 0.11.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -837,7 +837,7 @@ dependencies = [
 "checksum boxfnonce 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5988cb1d626264ac94100be357308f29ff7cbdd3b36bda27f450a4ee3f713426"
 "checksum bumpalo 3.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2e8c087f005730276d1096a652e92a8bacee2e2472bcc9715a74d2bec38b5820"
 "checksum bytes 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)" = "118cf036fbb97d0816e3c34b2d7a1e8cfc60f68fcf63d550ddbe9bd5f59c213b"
-"checksum cc 1.0.57 (registry+https://github.com/rust-lang/crates.io-index)" = "0fde55d2a2bfaa4c9668bbc63f531fbdeee3ffe188f4662511ce2c22b3eedebe"
+"checksum cc 1.0.58 (registry+https://github.com/rust-lang/crates.io-index)" = "f9a06fb2e53271d7c279ec1efea6ab691c35a2ae67ec0d91d7acec0caf13b518"
 "checksum cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
 "checksum clap 2.33.1 (registry+https://github.com/rust-lang/crates.io-index)" = "bdfa80d47f954d53a35a64987ca1422f495b8d6483c0fe9f7117b36c2a792129"
 "checksum daemonize 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "70c24513e34f53b640819f0ac9f705b673fcf4006d7aab8778bee72ebfc89815"