diff --git a/Cargo.lock b/Cargo.lock
index b93562966..7205e909a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -180,7 +180,7 @@ dependencies = [
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.45 (registry+https://github.com/rust-lang/crates.io-index)",
- "ssh2 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ssh2 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tempdir 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "vhost_rs 0.1.0",
  "vhost_user_backend 0.1.0",
@@ -195,6 +195,14 @@ dependencies = [
  "vmm-sys-util 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "cloudabi"
+version = "0.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "constant_time_eq"
 version = "0.1.5"
@@ -393,6 +401,14 @@ dependencies = [
  "vm-memory 0.1.0 (git+https://github.com/rust-vmm/vm-memory)",
 ]
 
+[[package]]
+name = "lock_api"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "scopeguard 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "log"
 version = "0.3.9"
@@ -455,6 +471,28 @@ dependencies = [
  "vcpkg 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "parking_lot"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "lock_api 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot_core 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "parking_lot_core"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smallvec 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "pci"
 version = "0.1.0"
@@ -742,6 +780,11 @@ name = "ryu"
 version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "scopeguard"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "semver"
 version = "0.9.0"
@@ -798,14 +841,20 @@ dependencies = [
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "smallvec"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "ssh2"
-version = "0.6.0"
+version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "libssh2-sys 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1245,6 +1294,7 @@ dependencies = [
 "checksum cc 1.0.50 (registry+https://github.com/rust-lang/crates.io-index)" = "95e28fa049fda1c330bcf9d723be7663a899c4679724b34c81e9f5a326aab8cd"
 "checksum cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
 "checksum clap 2.33.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5067f5bb2d80ef5d68b4c87db81601f0b75bca627bc2ef76b141d7b846a3c6d9"
+"checksum cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ddfc5b9aa5d4507acaf872de71051dfd0e309860e88966e1051e462a077aac4f"
 "checksum constant_time_eq 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "245097e9a4535ee1e3e3931fcfcd55a796a44c643e8596ff6566d68f09b87bbc"
 "checksum credibility 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "fae7a162fd5b462bc49704873a89950a655d44161add4be07e00e64c4c83a5bf"
 "checksum crossbeam-utils 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ce446db02cdc3165b94ae73111e570793400d0794e46125cc4056c81cbb039f4"
@@ -1267,11 +1317,14 @@ dependencies = [
 "checksum libssh2-sys 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)" = "36aa6e813339d3a063292b77091dfbbb6152ff9006a459895fa5bebed7d34f10"
 "checksum libz-sys 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)" = "2eb5e43362e38e2bca2fd5f5134c4d4564a23a5c28e9b95411652021a8675ebe"
 "checksum linux-loader 0.1.0 (git+https://github.com/rust-vmm/linux-loader)" = "<none>"
+"checksum lock_api 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "79b2de95ecb4691949fea4716ca53cdbcfccb2c612e19644a8bad05edcf9f47b"
 "checksum log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "e19e8d5c34a3e0e2223db8e060f9e8264aeeb5c5fc64a4ee9965c062211c024b"
 "checksum log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)" = "1b9ad466a945c9c40f6f9a449c55675547e59bc75a2722d4689042ab3ae80c9c"
 "checksum memchr 2.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3197e20c7edb283f87c071ddfc7a2cca8f8e0b888c242959846a6fce03c72223"
 "checksum micro_http 0.1.0 (git+https://github.com/firecracker-microvm/firecracker)" = "<none>"
 "checksum openssl-sys 0.9.53 (registry+https://github.com/rust-lang/crates.io-index)" = "465d16ae7fc0e313318f7de5cecf57b2fbe7511fd213978b457e1c96ff46736f"
+"checksum parking_lot 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "92e98c49ab0b7ce5b222f2cc9193fc4efe11c6d0bd4f648e374684a6857b1cfc"
+"checksum parking_lot_core 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7582838484df45743c8434fbff785e8edf260c28748353d44bc0da32e0ceabf1"
 "checksum pkg-config 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)" = "05da548ad6865900e60eaba7f589cc0783590a92e940c26953ff81ddbab2d677"
 "checksum pnet 0.25.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5c08c2c6c26481fcbe49dc4405baedf47151f859c5a45d3f254c2ff74ce51cf0"
 "checksum pnet_base 0.22.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4df28acf2fcc77436dd2b91a9a0c2bb617f9ca5f2acefee1a4135058b9f9801f"
@@ -1303,6 +1356,7 @@ dependencies = [
 "checksum rustc-serialize 0.3.24 (registry+https://github.com/rust-lang/crates.io-index)" = "dcf128d1287d2ea9d80910b5f1120d0b8eede3fbf1abe91c40d39ea7d51e6fda"
 "checksum rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
 "checksum ryu 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "bfa8506c1de11c9c4e4c38863ccbe02a305c8188e85a05a784c9e11e1c3910c8"
+"checksum scopeguard 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b42e15e59b18a828bbf5c58ea01debb36b9b096346de35d941dcb89009f24a0d"
 "checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
 "checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 "checksum serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)" = "414115f25f818d7dfccec8ee535d76949ae78584fc4f79a6f45a904bf8ab4449"
@@ -1310,7 +1364,8 @@ dependencies = [
 "checksum serde_json 1.0.45 (registry+https://github.com/rust-lang/crates.io-index)" = "eab8f15f15d6c41a154c1b128a22f2dfabe350ef53c40953d84e36155c91192b"
 "checksum signal-hook 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)" = "7a9c17dd3ba2d36023a5c9472ecddeda07e27fd0b05436e8c1e0c8f178185652"
 "checksum signal-hook-registry 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "94f478ede9f64724c5d173d7bb56099ec3e2d9fc2774aac65d34b8b890405f41"
-"checksum ssh2 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a5e35e594526c7cf14891247d5af64c44328f5dd67df6beff66e21f8e150222b"
+"checksum smallvec 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "44e59e0c9fa00817912ae6e4e6e3c4fe04455e75699d06eedc7d85917ed8e8f4"
+"checksum ssh2 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "26c31781ff1198791fb772771bca3ec962d7243cb8cad79818b2b38be8253e3c"
 "checksum strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 "checksum syn 1.0.14 (registry+https://github.com/rust-lang/crates.io-index)" = "af6f3550d8dff9ef7dc34d384ac6f107e5d31c8f57d9f28e0081503f547ac8f5"
 "checksum synstructure 0.12.3 (registry+https://github.com/rust-lang/crates.io-index)" = "67656ea1dc1b41b1451851562ea232ec2e5a80242139f7e679ceccfb5d61f545"
diff --git a/Cargo.toml b/Cargo.toml
index f33e489cc..8a36c5d2a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,7 +24,7 @@ vmm-sys-util = ">=0.3.1"
 vm-virtio = { path = "vm-virtio" }
 
 [dev-dependencies]
-ssh2 = "0.6.0"
+ssh2 = "0.7.1"
 dirs = "2.0.2"
 credibility = "0.1.3"
 tempdir= "0.3.7"