diff --git a/Cargo.lock b/Cargo.lock
index d02937d9b..2cbeb0e52 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -12,7 +12,7 @@ name = "aho-corasick"
 version = "0.6.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "memchr 2.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "memchr 2.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -20,7 +20,7 @@ name = "ansi_term"
 version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -67,9 +67,9 @@ name = "atty"
 version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "hermit-abi 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hermit-abi 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -84,7 +84,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "backtrace"
-version = "0.3.43"
+version = "0.3.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "backtrace-sys 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -140,14 +140,6 @@ dependencies = [
  "ppv-lite86 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "cast"
-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "cc"
 version = "1.0.50"
@@ -183,8 +175,8 @@ dependencies = [
  "epoll 4.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "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 1.0.46 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.48 (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",
@@ -240,7 +232,7 @@ dependencies = [
  "byteorder 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "epoll 4.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "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)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "vm-device 0.1.0",
  "vm-memory 0.1.0 (git+https://github.com/rust-vmm/vm-memory)",
@@ -264,7 +256,7 @@ dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_users 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -281,7 +273,7 @@ name = "failure"
 version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "backtrace 0.3.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "backtrace 0.3.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure_derive 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -318,7 +310,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "hermit-abi"
-version = "0.1.6"
+version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -411,7 +403,7 @@ 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)",
+ "scopeguard 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -419,12 +411,12 @@ name = "log"
 version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "log"
-version = "0.4.10"
+version = "0.4.8"
 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)",
@@ -432,13 +424,13 @@ dependencies = [
 
 [[package]]
 name = "memchr"
-version = "2.3.0"
+version = "2.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "micro_http"
 version = "0.1.0"
-source = "git+https://github.com/firecracker-microvm/firecracker#ae15e75eb78def04b156b09fc54b7ea687d8d469"
+source = "git+https://github.com/firecracker-microvm/firecracker#b85757ec00d18723d0a2caf17ad19f7c33c94807"
 dependencies = [
  "epoll 4.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -460,7 +452,7 @@ dependencies = [
  "pnet 0.25.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.46 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)",
  "vmm-sys-util 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -495,7 +487,7 @@ dependencies = [
  "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 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -505,7 +497,7 @@ dependencies = [
  "byteorder 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "devices 0.1.0",
  "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)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "vm-allocator 0.1.0",
  "vm-device 0.1.0",
  "vm-memory 0.1.0 (git+https://github.com/rust-vmm/vm-memory)",
@@ -616,7 +608,7 @@ version = "0.1.0"
 dependencies = [
  "byteorder 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "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)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "remain 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "vm-virtio 0.1.0",
@@ -640,7 +632,7 @@ dependencies = [
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -722,7 +714,7 @@ version = "1.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "aho-corasick 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "memchr 2.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "memchr 2.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex-syntax 0.6.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "thread_local 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "utf8-ranges 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -748,7 +740,7 @@ name = "remove_dir_all"
 version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -772,14 +764,6 @@ name = "rustc-serialize"
 version = "0.3.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "rustc_version"
-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "ryu"
 version = "1.0.2"
@@ -787,20 +771,7 @@ 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"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "semver-parser"
-version = "0.7.0"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -820,7 +791,7 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.46"
+version = "1.0.48"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "itoa 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -952,7 +923,7 @@ dependencies = [
  "rand 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
  "remove_dir_all 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -974,15 +945,15 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "1.0.10"
+version = "1.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "thiserror-impl 1.0.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "thiserror-impl 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.10"
+version = "1.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1038,7 +1009,7 @@ dependencies = [
  "kvm-bindings 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "kvm-ioctls 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "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)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "pci 0.1.0",
  "vfio-bindings 0.1.0 (git+https://github.com/rust-vmm/vfio-bindings)",
  "vm-allocator 0.1.0",
@@ -1085,7 +1056,7 @@ dependencies = [
  "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "epoll 4.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "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)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "qcow 0.1.0",
  "vhost_rs 0.1.0",
  "vhost_user_backend 0.1.0",
@@ -1101,7 +1072,7 @@ version = "0.1.0"
 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)",
- "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "vm-memory 0.1.0 (git+https://github.com/rust-vmm/vm-memory)",
  "vm-virtio 0.1.0",
 ]
@@ -1113,7 +1084,7 @@ dependencies = [
  "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "epoll 4.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "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)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "net_util 0.1.0",
  "vhost_rs 0.1.0",
  "vhost_user_backend 0.1.0",
@@ -1123,11 +1094,6 @@ dependencies = [
  "vmm-sys-util 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "virtio-bindings"
-version = "0.1.0"
-source = "git+https://github.com/rust-vmm/virtio-bindings#c5676476f1048d212f53ca80711d2b132dcebe23"
-
 [[package]]
 name = "virtio-bindings"
 version = "0.1.0"
@@ -1148,8 +1114,8 @@ dependencies = [
  "anyhow 1.0.26 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.46 (registry+https://github.com/rust-lang/crates.io-index)",
- "thiserror 1.0.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "thiserror 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "vm-memory 0.1.0 (git+https://github.com/rust-vmm/vm-memory)",
  "vmm-sys-util 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1157,11 +1123,10 @@ dependencies = [
 [[package]]
 name = "vm-memory"
 version = "0.1.0"
-source = "git+https://github.com/rust-vmm/vm-memory#f3d1c2775ccf619d7a7330ddfc4954a784b45751"
+source = "git+https://github.com/rust-vmm/vm-memory#2099f4162f978d6647ca92c26e94d76ea6139352"
 dependencies = [
- "cast 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1173,13 +1138,13 @@ dependencies = [
  "devices 0.1.0",
  "epoll 4.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "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)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "net_gen 0.1.0",
  "net_util 0.1.0",
  "pci 0.1.0",
  "tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "vhost_rs 0.1.0",
- "virtio-bindings 0.1.0 (git+https://github.com/rust-vmm/virtio-bindings)",
+ "virtio-bindings 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "vm-allocator 0.1.0",
  "vm-device 0.1.0",
  "vm-memory 0.1.0 (git+https://github.com/rust-vmm/vm-memory)",
@@ -1202,14 +1167,14 @@ dependencies = [
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "linux-loader 0.1.0 (git+https://github.com/rust-vmm/linux-loader)",
- "log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "micro_http 0.1.0 (git+https://github.com/firecracker-microvm/firecracker)",
  "net_util 0.1.0",
  "pci 0.1.0",
  "qcow 0.1.0",
  "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.46 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)",
  "signal-hook 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "vfio 0.0.1",
  "vm-allocator 0.1.0",
@@ -1239,7 +1204,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "winapi"
-version = "0.3.7"
+version = "0.3.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1280,7 +1245,7 @@ dependencies = [
 "checksum atty 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)" = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
 "checksum autocfg 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "1d49d90015b3c36167a20fe2810c5cd875ad504b39cff3d4eae7977e6b7c1cb2"
 "checksum autocfg 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f8aac770f1885fd7e387acedd76065302551364496e46b3dd00860b2f8359b9d"
-"checksum backtrace 0.3.43 (registry+https://github.com/rust-lang/crates.io-index)" = "7f80256bc78f67e7df7e36d77366f636ed976895d91fe2ab9efa3973e8fe8c4f"
+"checksum backtrace 0.3.44 (registry+https://github.com/rust-lang/crates.io-index)" = "e4036b9bf40f3cf16aba72a3d65e8a520fc4bafcdc7079aea8f848c58c5b5536"
 "checksum backtrace-sys 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)" = "5d6575f128516de27e3ce99689419835fce9643a9b215a14d2b5b685be018491"
 "checksum base64 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b41b7ea54a0c9d92199de89e20e58d49f02f8e699814ef3fdf266f6f748d15c7"
 "checksum bitflags 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4f67931368edf3a9a51d29886d245f1c3db2f1ef0dcc9e35ff70341b78c10d23"
@@ -1288,7 +1253,6 @@ dependencies = [
 "checksum blake2b_simd 0.5.10 (registry+https://github.com/rust-lang/crates.io-index)" = "d8fb2d74254a3a0b5cac33ac9f8ed0e44aa50378d9dbb2e5d83bd21ed1dc2c8a"
 "checksum byteorder 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "08c48aae112d48ed9f069b33538ea9e3e90aa263cfa3d1c24309612b1f7472de"
 "checksum c2-chacha 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "214238caa1bf3a496ec3392968969cab8549f96ff30652c9e56885329315f6bb"
-"checksum cast 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "4b9434b9a5aa1450faa3f9cb14ea0e8c53bb5d2b3c1bfd1ab4fc03e9f33fbfb0"
 "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"
@@ -1304,7 +1268,7 @@ dependencies = [
 "checksum fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a06f77d526c1a601b7c4cdd98f54b5eaabffc14d5f2f0296febdc7f357c6d3ba"
 "checksum getrandom 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)" = "7abc8dd8451921606d809ba32e95b6111925cd2906060d2dcc29c070220503eb"
 "checksum glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "8be18de09a56b60ed0edf84bc9df007e30040691af7acd1c41874faac5895bfb"
-"checksum hermit-abi 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "eff2656d88f158ce120947499e971d743c05dbcbed62e5bd2f38f1698bbc3772"
+"checksum hermit-abi 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "e2c55f143919fbc0bc77e427fe2d74cf23786d7c1875666f2fde3ac3c659bb67"
 "checksum ipnetwork 0.15.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a69dd5e3613374e74da81c251750153abe3bd0ad17641ea63d43d1e21d0dbd4d"
 "checksum itoa 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)" = "b8b7a7c0c47db5545ed3fef7468ee7bb5b74691498139e4b3f6a20685dc6dd8e"
 "checksum kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
@@ -1317,8 +1281,8 @@ dependencies = [
 "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 log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)" = "14b6052be84e6b71ab17edffc2eeabf5c2c3ae1fdb464aae35ac50c67a44e1f7"
+"checksum memchr 2.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "53445de381a1f436797497c61d851644d0e8e88e6140f22872ad33a704933978"
 "checksum micro_http 0.1.0 (git+https://github.com/firecracker-microvm/firecracker)" = "<none>"
 "checksum openssl-sys 0.9.54 (registry+https://github.com/rust-lang/crates.io-index)" = "1024c0a59774200a555087a6da3f253a9095a5f344e353b212ac4c8b8e450986"
 "checksum parking_lot 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "92e98c49ab0b7ce5b222f2cc9193fc4efe11c6d0bd4f648e374684a6857b1cfc"
@@ -1352,14 +1316,11 @@ dependencies = [
 "checksum rust-argon2 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2bc8af4bda8e1ff4932523b94d3dd20ee30a87232323eda55903ffd71d2fb017"
 "checksum rustc-demangle 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)" = "4c691c0e608126e00913e33f0ccf3727d5fc84573623b8d65b2df340b5201783"
 "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 scopeguard 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
 "checksum serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)" = "414115f25f818d7dfccec8ee535d76949ae78584fc4f79a6f45a904bf8ab4449"
 "checksum serde_derive 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)" = "128f9e303a5a29922045a830221b8f78ec74a5f544944f3d5984f8ec3895ef64"
-"checksum serde_json 1.0.46 (registry+https://github.com/rust-lang/crates.io-index)" = "21b01d7f0288608a01dca632cf1df859df6fd6ffa885300fc275ce2ba6221953"
+"checksum serde_json 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)" = "9371ade75d4c2d6cb154141b9752cf3781ec9c05e0e5cf35060e1e70ee7b9c25"
 "checksum signal-hook 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)" = "10b9f3a1686a29f53cfd91ee5e3db3c12313ec02d33765f02c1a9645a1811e2c"
 "checksum signal-hook-registry 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "94f478ede9f64724c5d173d7bb56099ec3e2d9fc2774aac65d34b8b890405f41"
 "checksum smallvec 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5c2fb2ec9bcd216a5b0d0ccf31ab17b5ed1d627960edff65bbe95d3ce221cefc"
@@ -1375,8 +1336,8 @@ dependencies = [
 "checksum tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6e24d9338a0a5be79593e2fa15a648add6138caa803e2d5bc782c371732ca9"
 "checksum term 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "fa63644f74ce96fbeb9b794f66aff2a52d601cbd5e80f4b97123e3899f4570f1"
 "checksum textwrap 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
-"checksum thiserror 1.0.10 (registry+https://github.com/rust-lang/crates.io-index)" = "205684fd018ca14432b12cce6ea3d46763311a571c3d294e71ba3f01adcf1aad"
-"checksum thiserror-impl 1.0.10 (registry+https://github.com/rust-lang/crates.io-index)" = "57e4d2e50ca050ed44fb58309bdce3efa79948f84f9993ad1978de5eebdce5a7"
+"checksum thiserror 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)" = "ee14bf8e6767ab4c687c9e8bc003879e042a96fd67a3ba5934eadb6536bef4db"
+"checksum thiserror-impl 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)" = "a7b51e1fbc44b5a0840be594fbc0f960be09050f2617e61e6aa43bef97cd3ef4"
 "checksum thread_local 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c6b53e329000edc2b34dbe8545fd20e55a333362d0a321909685a19bd28c3f1b"
 "checksum unicode-width 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "caaa9d531767d1ff2150b9332433f32a24622147e5ebb1f26409d5da67afd479"
 "checksum unicode-xid 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "36dff09cafb4ec7c8cf0023eb0b686cb6ce65499116a12201c9e11840ca01beb"
@@ -1385,13 +1346,12 @@ dependencies = [
 "checksum vcpkg 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "3fc439f2794e98976c88a2a2dafce96b930fe8010b0a256b3c2199a773933168"
 "checksum vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a"
 "checksum vfio-bindings 0.1.0 (git+https://github.com/rust-vmm/vfio-bindings)" = "<none>"
-"checksum virtio-bindings 0.1.0 (git+https://github.com/rust-vmm/virtio-bindings)" = "<none>"
 "checksum virtio-bindings 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3ff512178285488516ed85f15b5d0113a7cdb89e9e8a760b269ae4f02b84bd6b"
 "checksum vm-memory 0.1.0 (git+https://github.com/rust-vmm/vm-memory)" = "<none>"
 "checksum vmm-sys-util 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "048b10a74f061d87dacca196a1964052a7135651641ab8d100aef21e58f33571"
 "checksum wasi 0.9.0+wasi-snapshot-preview1 (registry+https://github.com/rust-lang/crates.io-index)" = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
 "checksum winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
-"checksum winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "f10e386af2b13e47c89e7236a7a14a086791a2b88ebad6df9bf42040195cf770"
+"checksum winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
 "checksum winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
 "checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 "checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
diff --git a/Cargo.toml b/Cargo.toml
index e94d1dfe1..a22a8c50c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,12 +6,12 @@ edition = "2018"
 default-run = "cloud-hypervisor"
 
 [dependencies]
-arc-swap = ">=0.4.4"
+arc-swap = "0.4.4"
 clap = "2.33.0"
-epoll = ">=4.0.1"
+epoll = "4.1.0"
 lazy_static = "1.4.0"
 libc = "0.2.66"
-log = { version = "0.4.10", features = ["std"] }
+log = { version = "0.4.8", features = ["std"] }
 vhost_user_backend = { path = "vhost_user_backend"}
 vhost_user_block = { path = "vhost_user_block"}
 vhost_user_fs = { path = "vhost_user_fs"}
@@ -20,20 +20,20 @@ virtio-bindings = "0.1.0"
 vmm = { path = "vmm" }
 vm-device = { path = "vm-device" }
 vm-memory = { git = "https://github.com/rust-vmm/vm-memory" }
-vmm-sys-util = ">=0.3.1"
+vmm-sys-util = "0.4.0"
 vm-virtio = { path = "vm-virtio" }
 
+[dependencies.vhost_rs]
+path = "vhost_rs"
+features = ["vhost-user-slave"]
+
 [dev-dependencies]
 ssh2 = "0.7.1"
 dirs = "2.0.2"
 credibility = "0.1.3"
 tempdir= "0.3.7"
 lazy_static= "1.4.0"
-serde_json = ">=1.0.9"
-
-[dependencies.vhost_rs]
-path = "vhost_rs"
-features = ["vhost-user-slave"]
+serde_json = "1.0.48"
 
 [features]
 default = ["acpi", "pci", "cmos"]
diff --git a/arch/Cargo.toml b/arch/Cargo.toml
index 3aa7dafb1..7413d425c 100644
--- a/arch/Cargo.toml
+++ b/arch/Cargo.toml
@@ -10,7 +10,7 @@ default = []
 byteorder = "1.3.4"
 kvm-bindings = "0.2.0"
 kvm-ioctls = "0.5.0"
-libc = "0.2.60"
+libc = "0.2.66"
 
 acpi_tables = { path = "../acpi_tables", optional = true }
 arch_gen = { path = "../arch_gen" }
diff --git a/devices/Cargo.toml b/devices/Cargo.toml
index 5427ea706..fda1dfe85 100644
--- a/devices/Cargo.toml
+++ b/devices/Cargo.toml
@@ -4,14 +4,14 @@ version = "0.1.0"
 authors = ["The Chromium OS Authors"]
 
 [dependencies]
-bitflags = ">=1.2.1"
+bitflags = "1.2.1"
 byteorder = "1.3.4"
-epoll = ">=4.0.1"
-libc = "0.2.60"
+epoll = "4.1.0"
+libc = "0.2.66"
 log = "0.4.8"
 vm-device = { path = "../vm-device" }
 vm-memory = { git = "https://github.com/rust-vmm/vm-memory" }
-vmm-sys-util = ">=0.3.1"
+vmm-sys-util = "0.4.0"
 
 [dev-dependencies]
 tempfile = "3.1.0"
diff --git a/net_gen/Cargo.toml b/net_gen/Cargo.toml
index 4e28dcb79..bfe9da7d2 100644
--- a/net_gen/Cargo.toml
+++ b/net_gen/Cargo.toml
@@ -4,4 +4,4 @@ version = "0.1.0"
 authors = ["The Chromium OS Authors"]
 
 [dependencies]
-vmm-sys-util = ">=0.3.1"
+vmm-sys-util = "0.4.0"
diff --git a/net_util/Cargo.toml b/net_util/Cargo.toml
index 4219275d7..c86389ad9 100644
--- a/net_util/Cargo.toml
+++ b/net_util/Cargo.toml
@@ -4,14 +4,14 @@ version = "0.1.0"
 authors = ["The Chromium OS Authors"]
 
 [dependencies]
-libc = "0.2.60"
+libc = "0.2.66"
 rand = "0.7.3"
-serde = "1.0.98"
-vmm-sys-util = ">=0.3.1"
+serde = "1.0.104"
+vmm-sys-util = "0.4.0"
 
 net_gen = { path = "../net_gen" }
 
 [dev-dependencies]
-lazy_static = "1.3.0"
+lazy_static = "1.4.0"
 pnet = "0.25.0"
-serde_json = "1.0.46"
+serde_json = "1.0.48"
diff --git a/pci/Cargo.toml b/pci/Cargo.toml
index e8f7dad9f..8b07c2b53 100644
--- a/pci/Cargo.toml
+++ b/pci/Cargo.toml
@@ -8,7 +8,7 @@ edition = "2018"
 vm-allocator = { path = "../vm-allocator" }
 byteorder = "1.3.4"
 devices = { path = "../devices" }
-libc = "0.2.60"
+libc = "0.2.66"
 log = "0.4.8"
 vm-device = { path = "../vm-device" }
 vm-memory = { git = "https://github.com/rust-vmm/vm-memory" }
diff --git a/qcow/Cargo.toml b/qcow/Cargo.toml
index 360422ab9..aedddb29f 100644
--- a/qcow/Cargo.toml
+++ b/qcow/Cargo.toml
@@ -10,10 +10,10 @@ path = "src/qcow.rs"
 
 [dependencies]
 byteorder = "1.3.4"
-libc = "0.2.60"
+libc = "0.2.66"
 log = "0.4.8"
 remain = "0.2.1"
-vmm-sys-util = ">=0.3.1"
+vmm-sys-util = "0.4.0"
 vm-virtio = { path = "../vm-virtio" }
 
 [dev-dependencies]
diff --git a/vfio/Cargo.toml b/vfio/Cargo.toml
index f110860f5..d0ac2936e 100644
--- a/vfio/Cargo.toml
+++ b/vfio/Cargo.toml
@@ -4,17 +4,17 @@ version = "0.0.1"
 authors = ["The Cloud Hypervisor Authors"]
 
 [dependencies]
-arc-swap = ">=0.4.4"
+arc-swap = "0.4.4"
 byteorder = "1.3.4"
 devices = { path = "../devices" }
 kvm-bindings = "0.2.0"
 kvm-ioctls = "0.5.0"
-libc = "0.2.60"
+libc = "0.2.66"
 log = "0.4.8"
 pci = { path = "../pci" }
 vm-allocator = { path = "../vm-allocator" }
 vm-device = { path = "../vm-device" }
-vmm-sys-util = ">=0.3.1"
+vmm-sys-util = "0.4.0"
 
 [dependencies.vm-memory]
 git = "https://github.com/rust-vmm/vm-memory"
diff --git a/vhost_rs/Cargo.toml b/vhost_rs/Cargo.toml
index 923392764..47fb8b0f0 100644
--- a/vhost_rs/Cargo.toml
+++ b/vhost_rs/Cargo.toml
@@ -13,9 +13,9 @@ vhost-user-master = []
 vhost-user-slave = []
 
 [dependencies]
-bitflags = "1.1.0"
-libc = "0.2.60"
-vmm-sys-util = ">=0.3.1"
+bitflags = "1.2.1"
+libc = "0.2.66"
+vmm-sys-util = "0.4.0"
 
 [dependencies.vm-memory]
 git = "https://github.com/rust-vmm/vm-memory"
diff --git a/vhost_user_backend/Cargo.toml b/vhost_user_backend/Cargo.toml
index 42a34a355..96ac755d5 100644
--- a/vhost_user_backend/Cargo.toml
+++ b/vhost_user_backend/Cargo.toml
@@ -10,11 +10,11 @@ pci_support = ["vm-virtio/pci_support"]
 mmio_support = ["vm-virtio/mmio_support"]
 
 [dependencies]
-epoll = ">=4.0.1"
+epoll = "4.1.0"
 libc = "0.2.66"
 vm-memory = { git = "https://github.com/rust-vmm/vm-memory" }
 vm-virtio = { path = "../vm-virtio" }
-vmm-sys-util = ">=0.3.1"
+vmm-sys-util = "0.4.0"
 
 [dependencies.vhost_rs]
 path = "../vhost_rs"
diff --git a/vhost_user_block/Cargo.toml b/vhost_user_block/Cargo.toml
index 2b7f2ccec..ed824d0d9 100644
--- a/vhost_user_block/Cargo.toml
+++ b/vhost_user_block/Cargo.toml
@@ -5,9 +5,9 @@ authors = ["The Cloud Hypervisor Authors"]
 edition = "2018"
 
 [dependencies]
-bitflags = "1.1.0"
-epoll = ">=4.0.1"
-libc = "0.2.65"
+bitflags = "1.2.1"
+epoll = "4.1.0"
+libc = "0.2.66"
 log = "0.4.8"
 qcow = { path = "../qcow" }
 vhost_user_backend = { path = "../vhost_user_backend" }
@@ -15,4 +15,4 @@ vhost_rs = { path = "../vhost_rs" }
 virtio-bindings = "0.1.0"
 vm-memory = { git = "https://github.com/rust-vmm/vm-memory" }
 vm-virtio = { path = "../vm-virtio" }
-vmm-sys-util = ">=0.3.1"
\ No newline at end of file
+vmm-sys-util = "0.4.0"
diff --git a/vhost_user_fs/Cargo.toml b/vhost_user_fs/Cargo.toml
index 8ffc1922a..682c2db24 100644
--- a/vhost_user_fs/Cargo.toml
+++ b/vhost_user_fs/Cargo.toml
@@ -5,8 +5,8 @@ authors = ["The Cloud Hypervisor Authors"]
 edition = "2018"
 
 [dependencies]
-bitflags = "1.1.0"
-libc = "0.2.65"
+bitflags = "1.2.1"
+libc = "0.2.66"
 log = "0.4.8"
 vm-memory = { git = "https://github.com/rust-vmm/vm-memory" }
 vm-virtio = { path = "../vm-virtio" }
diff --git a/vhost_user_net/Cargo.toml b/vhost_user_net/Cargo.toml
index 542d5514c..7c37a2d1d 100644
--- a/vhost_user_net/Cargo.toml
+++ b/vhost_user_net/Cargo.toml
@@ -5,9 +5,9 @@ authors = ["The Cloud Hypervisor Authors"]
 edition = "2018"
 
 [dependencies]
-bitflags = "1.1.0"
-epoll = ">=4.0.1"
-libc = "0.2.65"
+bitflags = "1.2.1"
+epoll = "4.1.0"
+libc = "0.2.66"
 log = "0.4.8"
 net_util = { path = "../net_util" }
 vhost_user_backend = { path = "../vhost_user_backend" }
@@ -15,4 +15,4 @@ vhost_rs = { path = "../vhost_rs" }
 virtio-bindings = "0.1.0"
 vm-memory = { git = "https://github.com/rust-vmm/vm-memory" }
 vm-virtio = { path = "../vm-virtio" }
-vmm-sys-util = ">=0.3.1"
\ No newline at end of file
+vmm-sys-util = "0.4.0"
diff --git a/vm-allocator/Cargo.toml b/vm-allocator/Cargo.toml
index eb9454f2e..daafbc985 100755
--- a/vm-allocator/Cargo.toml
+++ b/vm-allocator/Cargo.toml
@@ -5,5 +5,5 @@ authors = ["The Chromium OS Authors"]
 edition = "2018"
 
 [dependencies]
-libc = "0.2.60"
+libc = "0.2.66"
 vm-memory = { git = "https://github.com/rust-vmm/vm-memory" }
diff --git a/vm-device/Cargo.toml b/vm-device/Cargo.toml
index b687f628f..4a0c1e03a 100644
--- a/vm-device/Cargo.toml
+++ b/vm-device/Cargo.toml
@@ -5,12 +5,12 @@ authors = ["The Cloud Hypervisor Authors"]
 edition = "2018"
 
 [dependencies]
-anyhow = "1.0"
-thiserror = "1.0"
-serde = {version = ">=1.0.27", features = ["rc"] }
-serde_derive = ">=1.0.27"
-serde_json = ">=1.0.9"
-vmm-sys-util = ">=0.3.1"
+anyhow = "1.0.26"
+thiserror = "1.0.11"
+serde = { version = "1.0.104", features = ["rc"] }
+serde_derive = "1.0.104"
+serde_json = "1.0.48"
+vmm-sys-util = "0.4.0"
 
 [dependencies.vm-memory]
 git = "https://github.com/rust-vmm/vm-memory"
diff --git a/vm-virtio/Cargo.toml b/vm-virtio/Cargo.toml
index 1a399a63f..93af74dfd 100644
--- a/vm-virtio/Cargo.toml
+++ b/vm-virtio/Cargo.toml
@@ -10,20 +10,20 @@ pci_support = ["pci"]
 mmio_support = []
 
 [dependencies]
-arc-swap = ">=0.4.4"
+arc-swap = "0.4.4"
 byteorder = "1.3.4"
 devices = { path = "../devices" }
-epoll = ">=4.0.1"
-libc = "0.2.60"
+epoll = "4.1.0"
+libc = "0.2.66"
 log = "0.4.8"
 net_gen = { path = "../net_gen" }
 net_util = { path = "../net_util" }
 pci = { path = "../pci", optional = true }
 tempfile = "3.1.0"
-virtio-bindings = { git = "https://github.com/rust-vmm/virtio-bindings", version = "0.1", features = ["virtio-v5_0_0"]}
+virtio-bindings = { version = "0.1.0", features = ["virtio-v5_0_0"] }
 vm-allocator = { path = "../vm-allocator" }
 vm-device = { path = "../vm-device" }
-vmm-sys-util = ">=0.3.1"
+vmm-sys-util = "0.4.0"
 
 [dependencies.vhost_rs]
 path = "../vhost_rs"
diff --git a/vmm/Cargo.toml b/vmm/Cargo.toml
index 75b8ae0f0..312f63275 100644
--- a/vmm/Cargo.toml
+++ b/vmm/Cargo.toml
@@ -12,30 +12,30 @@ mmio_support = ["vm-virtio/mmio_support"]
 cmos = ["devices/cmos"]
 
 [dependencies]
-arc-swap = ">=0.4.4"
+arc-swap = "0.4.4"
 clap = "2.33.0"
 acpi_tables = { path = "../acpi_tables", optional = true }
-anyhow = "1.0"
+anyhow = "1.0.26"
 arch = { path = "../arch" }
 devices = { path = "../devices" }
-epoll = ">=4.0.1"
+epoll = "4.1.0"
 kvm-bindings = "0.2.0"
 kvm-ioctls = "0.5.0"
 lazy_static = "1.4.0"
-libc = "0.2.62"
+libc = "0.2.66"
 log = "0.4.8"
 micro_http = { git = "https://github.com/firecracker-microvm/firecracker", branch = "master" }
 net_util = { path = "../net_util" }
 pci = {path = "../pci", optional = true}
 qcow = { path = "../qcow" }
-serde = {version = ">=1.0.27", features = ["rc"] }
-serde_derive = ">=1.0.27"
-serde_json = ">=1.0.9"
+serde = { version = "1.0.104", features = ["rc"] }
+serde_derive = "1.0.104"
+serde_json = "1.0.48"
 vfio = { path = "../vfio", optional = true }
 vm-allocator = { path = "../vm-allocator" }
 vm-device = { path = "../vm-device" }
 vm-virtio = { path = "../vm-virtio" }
-vmm-sys-util = ">=0.3.1"
+vmm-sys-util = "0.4.0"
 signal-hook = "0.1.13"
 
 [dependencies.linux-loader]