diff --git a/Cargo.toml b/Cargo.toml
index d6eaa17..54c7933 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,9 +9,9 @@ edition = "2018"
 exclude = ["test_fixture"]
 
 [dependencies]
-libc = "0.2.65"
-nix = "0.17.0"
+libc = "0.2.79"
+nix = "0.19.1"
 
 [dev-dependencies]
-rand = "0.7.2"
+rand = "0.8.3"
 sha2 = ">=0.8.0"
diff --git a/Makefile b/Makefile
index cbaf471..546fc8e 100644
--- a/Makefile
+++ b/Makefile
@@ -47,7 +47,7 @@ kmod:
 # Start a virtio socket enabled vm
 vm: initrd.cpio
 	sudo qemu-system-x86_64 -kernel test_fixture/bzImage -initrd target/$(TOOLCHAIN)/debug/initrd.cpio \
-		-enable-kvm -m 256 -device vhost-vsock-pci,id=vhost-vsock-pci0,guest-cid=3 -nographic -append "console=ttyS0"
+		-enable-kvm -m 256 -device vhost-vsock-pci,id=vhost-vsock-pci0,guest-cid=3,disable-legacy=on -nographic -append "console=ttyS0"
 
 # Create a simple operating system image for the vm
 initrd.cpio: echo_server
diff --git a/echo_server/Cargo.lock b/echo_server/Cargo.lock
index b69080b..26ee953 100644
--- a/echo_server/Cargo.lock
+++ b/echo_server/Cargo.lock
@@ -4,144 +4,135 @@
 name = "ansi_term"
 version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
 dependencies = [
- "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi",
 ]
 
 [[package]]
 name = "atty"
 version = "0.2.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1803c647a3ec87095e7ae7acfca019e98de5ec9a7d01343f611cf3152ed71a90"
 dependencies = [
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc",
+ "winapi",
 ]
 
 [[package]]
 name = "bitflags"
 version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
 
 [[package]]
 name = "cc"
 version = "1.0.47"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa87058dce70a3ff5621797f1506cb837edd02ac4c0ae642b4542dce802908b8"
 
 [[package]]
 name = "cfg-if"
-version = "0.1.10"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "clap"
-version = "2.33.0"
+version = "2.33.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "37e58ac78573c40708d45522f0d80fa2f01cc4f9b4e2bf749807255454312002"
 dependencies = [
- "ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "atty 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "textwrap 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicode-width 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ansi_term",
+ "atty",
+ "bitflags",
+ "strsim",
+ "textwrap",
+ "unicode-width",
+ "vec_map",
 ]
 
 [[package]]
 name = "echo_server"
 version = "0.1.0"
 dependencies = [
- "clap 2.33.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
- "nix 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "vsock 0.2.1",
+ "clap",
+ "libc",
+ "nix",
+ "vsock",
 ]
 
 [[package]]
 name = "libc"
-version = "0.2.65"
+version = "0.2.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7eb0c4e9c72ee9d69b767adebc5f4788462a3b45624acd919475c92597bcaf4f"
 
 [[package]]
 name = "nix"
-version = "0.17.0"
+version = "0.19.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2ccba0cfe4fdf15982d1674c69b1fd80bad427d293849982668dfe454bd61f2"
 dependencies = [
- "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "cc 1.0.47 (registry+https://github.com/rust-lang/crates.io-index)",
- "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
- "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags",
+ "cc",
+ "cfg-if",
+ "libc",
 ]
 
 [[package]]
 name = "strsim"
 version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 
 [[package]]
 name = "textwrap"
 version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
 dependencies = [
- "unicode-width 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-width",
 ]
 
 [[package]]
 name = "unicode-width"
 version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7007dbd421b92cc6e28410fe7362e2e0a2503394908f417b68ec8d1c364c4e20"
 
 [[package]]
 name = "vec_map"
 version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "void"
-version = "1.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a"
 
 [[package]]
 name = "vsock"
 version = "0.2.1"
 dependencies = [
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
- "nix 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc",
+ "nix",
 ]
 
 [[package]]
 name = "winapi"
 version = "0.3.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
 dependencies = [
- "winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
 ]
 
 [[package]]
 name = "winapi-i686-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 
 [[package]]
 name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[metadata]
-"checksum ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
-"checksum atty 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)" = "1803c647a3ec87095e7ae7acfca019e98de5ec9a7d01343f611cf3152ed71a90"
-"checksum bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
-"checksum cc 1.0.47 (registry+https://github.com/rust-lang/crates.io-index)" = "aa87058dce70a3ff5621797f1506cb837edd02ac4c0ae642b4542dce802908b8"
-"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 libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)" = "1a31a0627fdf1f6a39ec0dd577e101440b7db22672c0901fe00a9a6fbb5c24e8"
-"checksum nix 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)" = "50e4785f2c3b7589a0d0c1dd60285e1188adac4006e8abd6dd578e1567027363"
-"checksum strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
-"checksum textwrap 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
-"checksum unicode-width 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "7007dbd421b92cc6e28410fe7362e2e0a2503394908f417b68ec8d1c364c4e20"
-"checksum vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a"
-"checksum void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
-"checksum winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
-"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"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
diff --git a/echo_server/Cargo.toml b/echo_server/Cargo.toml
index 4fca101..4f6021f 100644
--- a/echo_server/Cargo.toml
+++ b/echo_server/Cargo.toml
@@ -7,7 +7,7 @@ license = "Apache-2.0"
 edition = "2018"
 
 [dependencies]
-clap = "2.33.0"
-libc = "0.2.65"
-nix = "0.17.0"
+clap = "2.33.3"
+libc = "0.2.79"
+nix = "0.19.0"
 vsock = { path = "../" }
diff --git a/src/lib.rs b/src/lib.rs
index 8e60a72..ca87360 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -72,7 +72,7 @@ impl VsockListener {
             bind(
                 socket,
                 &mut vsock_addr as *mut _ as *mut sockaddr,
-                size_of::<sockaddr_vm>() as u32,
+                size_of::<sockaddr_vm>() as socklen_t,
             )
         };
         if res < 0 {
@@ -236,7 +236,7 @@ impl VsockStream {
             connect(
                 sock,
                 &vsock_addr as *const _ as *const sockaddr,
-                size_of::<sockaddr_vm>() as u32,
+                size_of::<sockaddr_vm>() as socklen_t,
             )
         } < 0
         {
@@ -322,7 +322,7 @@ impl VsockStream {
                 SOL_SOCKET,
                 SO_SNDTIMEO,
                 &timeout as *const _ as *const c_void,
-                size_of::<timeval>() as u32,
+                size_of::<timeval>() as socklen_t,
             )
         } < 0
         {
@@ -341,7 +341,7 @@ impl VsockStream {
                 SOL_SOCKET,
                 SO_RCVTIMEO,
                 &timeout as *const _ as *const c_void,
-                size_of::<timeval>() as u32,
+                size_of::<timeval>() as socklen_t,
             )
         } < 0
         {