diff --git a/Cargo.lock b/Cargo.lock
index 15e2640..6f9d96e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -5,7 +5,7 @@ dependencies = [
  "ansi_term 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "datetime 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "getopts 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "git2 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "git2 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "locale 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "natord 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "number_prefix 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -36,7 +36,7 @@ dependencies = [
 
 [[package]]
 name = "gcc"
-version = "0.1.7"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -49,11 +49,11 @@ dependencies = [
 
 [[package]]
 name = "git2"
-version = "0.1.17"
+version = "0.1.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libgit2-sys 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libgit2-sys 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 0.2.20 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -64,12 +64,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "libgit2-sys"
-version = "0.1.13"
+version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libssh2-sys 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libssh2-sys 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "libz-sys 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl-sys 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-sys 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -83,11 +83,11 @@ dependencies = [
 
 [[package]]
 name = "libssh2-sys"
-version = "0.1.5"
+version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "libz-sys 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl-sys 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-sys 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -126,10 +126,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "openssl-sys"
-version = "0.3.6"
+version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "gcc 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gcc 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libressl-pnacl-sys 2.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -169,7 +169,7 @@ dependencies = [
 
 [[package]]
 name = "rustc-serialize"
-version = "0.2.12"
+version = "0.2.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -178,7 +178,7 @@ version = "0.2.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "matches 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-serialize 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-serialize 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]