diff --git a/Cargo.lock b/Cargo.lock
index 154bebc..a81ad3b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -62,7 +62,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b1e692897359247cc6bb902933361652380af0f1b7651ae5c5013407f30e109e"
 dependencies = [
  "backtrace-sys",
- "cfg-if",
+ "cfg-if 0.1.10",
  "libc",
  "rustc-demangle",
 ]
@@ -168,6 +168,12 @@ version = "0.5.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "130aac562c0dd69c56b3b1cc8ffd2e17be31d0b6c25b61c96b76231aa23e39e1"
 
+[[package]]
+name = "bytes"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b700ce4376041dcd0a327fd0097c41095743c4c8af8887265942faf1100bd040"
+
 [[package]]
 name = "cc"
 version = "1.0.52"
@@ -180,6 +186,12 @@ version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
 
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
 [[package]]
 name = "chrono"
 version = "0.4.11"
@@ -252,7 +264,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "058ed274caafc1f60c4997b5fc07bf7dc7cca454af7c6e81edffe5f33f70dace"
 dependencies = [
  "autocfg",
- "cfg-if",
+ "cfg-if 0.1.10",
  "crossbeam-utils",
  "lazy_static",
  "maybe-uninit",
@@ -266,7 +278,7 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c695eeca1e7173472a32221542ae469b3e9aac3a4fc81f7696bcad82029493db"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "crossbeam-utils",
 ]
 
@@ -277,7 +289,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c3c7c73a2d1e9fc0886a08b93e98eb643461230d5f1925e4036204d5f2e261a8"
 dependencies = [
  "autocfg",
- "cfg-if",
+ "cfg-if 0.1.10",
  "lazy_static",
 ]
 
@@ -312,7 +324,7 @@ version = "2.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "13aea89a5c93364a98e9b37b2fa237effbb694d5cfe01c5b70941f7eb087d5e3"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "dirs-sys",
 ]
 
@@ -322,7 +334,7 @@ version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "afa0b23de8fd801745c471deffa6e12d248f962c9fd4b4c33787b055599bde7b"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "libc",
  "redox_users",
  "winapi 0.3.8",
@@ -564,7 +576,7 @@ version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7abc8dd8451921606d809ba32e95b6111925cd2906060d2dcc29c070220503eb"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "libc",
  "wasi",
 ]
@@ -602,7 +614,7 @@ dependencies = [
  "indexmap",
  "log",
  "slab",
- "tokio 0.2.21",
+ "tokio 0.2.24",
  "tokio-util",
 ]
 
@@ -730,7 +742,7 @@ dependencies = [
  "net2",
  "pin-project",
  "time 0.1.43",
- "tokio 0.2.21",
+ "tokio 0.2.24",
  "tower-service",
  "want 0.3.0",
 ]
@@ -744,7 +756,7 @@ dependencies = [
  "bytes 0.5.4",
  "hyper 0.13.5",
  "native-tls",
- "tokio 0.2.21",
+ "tokio 0.2.24",
  "tokio-tls",
 ]
 
@@ -757,6 +769,15 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "instant"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "61124eeebbd69b8190558df225adf7e4caafce0d743919e5d6b19652314ec5ec"
+dependencies = [
+ "cfg-if 1.0.0",
+]
+
 [[package]]
 name = "iovec"
 version = "0.1.4"
@@ -795,7 +816,7 @@ dependencies = [
  "lambda-attributes",
  "serde",
  "serde_json",
- "tokio 0.2.21",
+ "tokio 0.2.24",
  "tower-service",
  "tracing",
  "tracing-error",
@@ -861,9 +882,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.69"
+version = "0.2.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "99e85c08494b21a9054e7fe1374a732aeadaff3980b6990b94bfd3a70f690005"
+checksum = "9385f66bf6105b241aa65a61cb923ef20efc665cb9f9bb50ac2f0c4b7f378d41"
 
 [[package]]
 name = "lock_api"
@@ -874,13 +895,22 @@ dependencies = [
  "scopeguard",
 ]
 
+[[package]]
+name = "lock_api"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a3c91c24eae6777794bb1997ad98bbb87daf92890acab859f7eaa4320333176"
+dependencies = [
+ "scopeguard",
+]
+
 [[package]]
 name = "log"
 version = "0.4.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "14b6052be84e6b71ab17edffc2eeabf5c2c3ae1fdb464aae35ac50c67a44e1f7"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
 ]
 
 [[package]]
@@ -916,7 +946,7 @@ version = "0.6.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "302dec22bcf6bae6dfb69c647187f4b4d0fb6f535521f7bc022430ce8e12008f"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "fuchsia-zircon",
  "fuchsia-zircon-sys",
  "iovec",
@@ -929,6 +959,19 @@ dependencies = [
  "winapi 0.2.8",
 ]
 
+[[package]]
+name = "mio"
+version = "0.7.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf80d3e903b34e0bd7282b218398aec54e082c840d9baf8339e0080a0c542956"
+dependencies = [
+ "libc",
+ "log",
+ "miow 0.3.7",
+ "ntapi",
+ "winapi 0.3.8",
+]
+
 [[package]]
 name = "mio-named-pipes"
 version = "0.1.6"
@@ -936,8 +979,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f5e374eff525ce1c5b7687c4cef63943e7686524a387933ad27ca7ec43779cb3"
 dependencies = [
  "log",
- "mio",
- "miow 0.3.3",
+ "mio 0.6.21",
+ "miow 0.3.7",
  "winapi 0.3.8",
 ]
 
@@ -949,7 +992,7 @@ checksum = "966257a94e196b11bb43aca423754d87429960a768de9414f3691d6957abf125"
 dependencies = [
  "iovec",
  "libc",
- "mio",
+ "mio 0.6.21",
 ]
 
 [[package]]
@@ -966,11 +1009,10 @@ dependencies = [
 
 [[package]]
 name = "miow"
-version = "0.3.3"
+version = "0.3.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "396aa0f2003d7df8395cb93e09871561ccc3e785f0acb369170e8cc74ddf9226"
+checksum = "b9f1c5b025cda876f66ef43a113f91ebc9f4ccef34843000e0adf6ebbab84e21"
 dependencies = [
- "socket2",
  "winapi 0.3.8",
 ]
 
@@ -998,11 +1040,20 @@ version = "0.2.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "42550d9fb7b6684a6d404d9fa7250c2eb2646df731d1c06afc06dcee9e1bcf88"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "libc",
  "winapi 0.3.8",
 ]
 
+[[package]]
+name = "ntapi"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a31937dea023539c72ddae0e3571deadc1414b300483fa7aaec176168cfa9d2"
+dependencies = [
+ "winapi 0.3.8",
+]
+
 [[package]]
 name = "num-integer"
 version = "0.1.42"
@@ -1032,6 +1083,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "once_cell"
+version = "1.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "af8b08b04175473088b46763e51ee54da5f9a164bc162f615b91bc179dbf15a3"
+
 [[package]]
 name = "opaque-debug"
 version = "0.2.3"
@@ -1045,7 +1102,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cee6d85f4cb4c4f59a6a85d5b68a233d280c82e29e822913b9c8b129fbf20bdd"
 dependencies = [
  "bitflags",
- "cfg-if",
+ "cfg-if 0.1.10",
  "foreign-types",
  "lazy_static",
  "libc",
@@ -1077,23 +1134,48 @@ version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f842b1982eb6c2fe34036a4fbfb06dd185a3f5c8edfaacdf7d1ea10b07de6252"
 dependencies = [
- "lock_api",
- "parking_lot_core",
+ "lock_api 0.3.4",
+ "parking_lot_core 0.6.2",
  "rustc_version 0.2.3",
 ]
 
+[[package]]
+name = "parking_lot"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6d7744ac029df22dca6284efe4e898991d28e3085c706c972bcd7da4a27a15eb"
+dependencies = [
+ "instant",
+ "lock_api 0.4.3",
+ "parking_lot_core 0.8.3",
+]
+
 [[package]]
 name = "parking_lot_core"
 version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b876b1b9e7ac6e1a74a6da34d25c42e17e8862aa409cbbbdcfc8d86c6f3bc62b"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "cloudabi",
  "libc",
- "redox_syscall",
+ "redox_syscall 0.1.56",
  "rustc_version 0.2.3",
- "smallvec",
+ "smallvec 0.6.13",
+ "winapi 0.3.8",
+]
+
+[[package]]
+name = "parking_lot_core"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa7a782938e745763fe6907fc6ba86946d72f49fe7e21de074e08128a99fb018"
+dependencies = [
+ "cfg-if 1.0.0",
+ "instant",
+ "libc",
+ "redox_syscall 0.2.5",
+ "smallvec 1.6.1",
  "winapi 0.3.8",
 ]
 
@@ -1129,6 +1211,12 @@ version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "237844750cfbb86f67afe27eee600dfbbcb6188d734139b534cbfbf4f96792ae"
 
+[[package]]
+name = "pin-project-lite"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc0e1f259c92177c30a4c9d177246edd0a3568b25756a977d0632cf8fa37e905"
+
 [[package]]
 name = "pin-utils"
 version = "0.1.0"
@@ -1327,6 +1415,15 @@ version = "0.1.56"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2439c63f3f6139d1b57529d16bc3b8bb855230c8efcc5d3a896c8bea7c3b1e84"
 
+[[package]]
+name = "redox_syscall"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "94341e4e44e24f6b591b59e47a8a027df12e008d73fd5672dbea9cc22f4507d9"
+dependencies = [
+ "bitflags",
+]
+
 [[package]]
 name = "redox_users"
 version = "0.3.4"
@@ -1334,7 +1431,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09b23093265f8d200fa7b4c2c76297f47e681c655f6f1285a8780d6a022f7431"
 dependencies = [
  "getrandom",
- "redox_syscall",
+ "redox_syscall 0.1.56",
  "rust-argon2",
 ]
 
@@ -1370,7 +1467,7 @@ dependencies = [
  "serde_derive",
  "serde_json",
  "simple_logger",
- "tokio 0.2.21",
+ "tokio 1.5.0",
 ]
 
 [[package]]
@@ -1417,7 +1514,7 @@ dependencies = [
  "serde",
  "serde_json",
  "sha2",
- "tokio 0.2.20",
+ "tokio 0.2.24",
  "xml-rs",
 ]
 
@@ -1446,7 +1543,7 @@ dependencies = [
  "serde",
  "serde_json",
  "sha2",
- "tokio 0.2.21",
+ "tokio 0.2.24",
  "xml-rs",
 ]
 
@@ -1466,7 +1563,7 @@ dependencies = [
  "serde",
  "serde_json",
  "shlex",
- "tokio 0.2.21",
+ "tokio 0.2.24",
  "zeroize",
 ]
 
@@ -1486,7 +1583,7 @@ dependencies = [
  "serde",
  "serde_json",
  "shlex",
- "tokio 0.2.20",
+ "tokio 0.2.24",
  "zeroize",
 ]
 
@@ -1526,7 +1623,7 @@ dependencies = [
  "serde",
  "sha2",
  "time 0.2.14",
- "tokio 0.2.20",
+ "tokio 0.2.24",
 ]
 
 [[package]]
@@ -1551,7 +1648,7 @@ dependencies = [
  "serde",
  "sha2",
  "time 0.2.14",
- "tokio 0.2.21",
+ "tokio 0.2.24",
 ]
 
 [[package]]
@@ -1759,16 +1856,10 @@ dependencies = [
 ]
 
 [[package]]
-name = "socket2"
-version = "0.3.12"
+name = "smallvec"
+version = "1.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "03088793f677dce356f3ccc2edb1b314ad191ab702a5de3faf49304f7e104918"
-dependencies = [
- "cfg-if",
- "libc",
- "redox_syscall",
- "winapi 0.3.8",
-]
+checksum = "fe0f37c9e8f3c5a4a66ad655a93c74daac4ad00c441533bf5c6e7990bb42604e"
 
 [[package]]
 name = "standback"
@@ -1903,10 +1994,10 @@ version = "3.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7a6e24d9338a0a5be79593e2fa15a648add6138caa803e2d5bc782c371732ca9"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "libc",
  "rand 0.7.3",
- "redox_syscall",
+ "redox_syscall 0.1.56",
  "remove_dir_all",
  "winapi 0.3.8",
 ]
@@ -1936,7 +2027,7 @@ version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c19b581e837b3f1a6a211e1d30f11a2da711cc8f6d38c16972eecc0398114446"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "libc",
  "standback",
  "stdweb",
@@ -1976,7 +2067,7 @@ checksum = "5a09c0b5bb588872ab2f09afa13ee6e9dac11e10a0ec9e8e3ba39a5a5d530af6"
 dependencies = [
  "bytes 0.4.12",
  "futures 0.1.29",
- "mio",
+ "mio 0.6.21",
  "num_cpus",
  "tokio-codec",
  "tokio-current-thread",
@@ -1994,9 +2085,9 @@ dependencies = [
 
 [[package]]
 name = "tokio"
-version = "0.2.21"
+version = "0.2.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d099fa27b9702bed751524694adbe393e18b36b204da91eb1cbbbbb4a5ee2d58"
+checksum = "099837d3464c16a808060bb3f02263b412f6fafcb5d01c533d309985fbeebe48"
 dependencies = [
  "bytes 0.5.4",
  "fnv",
@@ -2005,14 +2096,34 @@ dependencies = [
  "lazy_static",
  "libc",
  "memchr",
- "mio",
+ "mio 0.6.21",
  "mio-named-pipes",
  "mio-uds",
  "num_cpus",
- "pin-project-lite",
+ "pin-project-lite 0.1.4",
  "signal-hook-registry",
  "slab",
- "tokio-macros",
+ "tokio-macros 0.2.6",
+ "winapi 0.3.8",
+]
+
+[[package]]
+name = "tokio"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "83f0c8e7c0addab50b663055baf787d0af7f413a46e6e7fb9559a4e4db7137a5"
+dependencies = [
+ "autocfg",
+ "bytes 1.0.1",
+ "libc",
+ "memchr",
+ "mio 0.7.11",
+ "num_cpus",
+ "once_cell",
+ "parking_lot 0.11.1",
+ "pin-project-lite 0.2.6",
+ "signal-hook-registry",
+ "tokio-macros 1.1.0",
  "winapi 0.3.8",
 ]
 
@@ -2082,9 +2193,20 @@ dependencies = [
 
 [[package]]
 name = "tokio-macros"
-version = "0.2.5"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e44da00bfc73a25f814cd8d7e57a68a5c31b74b3152a0a1d1f590c97ed06265a"
+dependencies = [
+ "proc-macro2 1.0.10",
+ "quote 1.0.3",
+ "syn 1.0.18",
+]
+
+[[package]]
+name = "tokio-macros"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0c3acc6aa564495a0f2e1d59fab677cd7f81a19994cfc7f3ad0e64301560389"
+checksum = "caf7b11a536f46a809a8a9f0bb4237020f70ecbf115b842360afb127ea2fda57"
 dependencies = [
  "proc-macro2 1.0.10",
  "quote 1.0.3",
@@ -2101,9 +2223,9 @@ dependencies = [
  "futures 0.1.29",
  "lazy_static",
  "log",
- "mio",
+ "mio 0.6.21",
  "num_cpus",
- "parking_lot",
+ "parking_lot 0.9.0",
  "slab",
  "tokio-executor",
  "tokio-io",
@@ -2129,7 +2251,7 @@ dependencies = [
  "bytes 0.4.12",
  "futures 0.1.29",
  "iovec",
- "mio",
+ "mio 0.6.21",
  "tokio-io",
  "tokio-reactor",
 ]
@@ -2170,7 +2292,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7bde02a3a5291395f59b06ec6945a3077602fac2b07eeeaf0dee2122f3619828"
 dependencies = [
  "native-tls",
- "tokio 0.2.21",
+ "tokio 0.2.24",
 ]
 
 [[package]]
@@ -2182,7 +2304,7 @@ dependencies = [
  "bytes 0.4.12",
  "futures 0.1.29",
  "log",
- "mio",
+ "mio 0.6.21",
  "tokio-codec",
  "tokio-io",
  "tokio-reactor",
@@ -2199,7 +2321,7 @@ dependencies = [
  "iovec",
  "libc",
  "log",
- "mio",
+ "mio 0.6.21",
  "mio-uds",
  "tokio-codec",
  "tokio-io",
@@ -2216,8 +2338,8 @@ dependencies = [
  "futures-core",
  "futures-sink",
  "log",
- "pin-project-lite",
- "tokio 0.2.21",
+ "pin-project-lite 0.1.4",
+ "tokio 0.2.24",
 ]
 
 [[package]]
@@ -2232,7 +2354,7 @@ version = "0.1.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1721cc8cf7d770cc4257872507180f35a4797272f5962f24c806af9e7faf52ab"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "tracing-attributes",
  "tracing-core",
 ]
@@ -2355,7 +2477,7 @@ version = "0.2.62"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e3c7d40d09cdbf0f4895ae58cf57d92e1e57a9dd8ed2e8390514b54a47cc5551"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "wasm-bindgen-macro",
 ]
 
diff --git a/Cargo.toml b/Cargo.toml
index 110ed48..2e9b016 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,7 +10,7 @@ edition = "2018"
 # lambda = { version = "0.2.1", package = "lambda_runtime" }
 lambda = { git = "https://github.com/awslabs/aws-lambda-rust-runtime/", branch = "master" }
 serde_json = "1.0.53"
-tokio = { version = "0.2", features = ["full"] }
+tokio = { version = "1.5", features = ["full"] }
 lambda_runtime_client = "0.2.2"
 serde_derive = "1.0.106"
 serde = "1.0.111"