diff --git a/Cargo.lock b/Cargo.lock
index 450da94..63edc34 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,12 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "adler"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
+
 [[package]]
 name = "aho-corasick"
 version = "0.7.18"
@@ -81,6 +87,24 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
 
+[[package]]
+name = "aws_lambda_events"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4c1e41ff8f5750dabfd3e940de42a12bdb842369d0985630a424db0a96721c6e"
+dependencies = [
+ "base64",
+ "bytes",
+ "chrono",
+ "http",
+ "http-body",
+ "http-serde",
+ "query_map",
+ "serde",
+ "serde_derive",
+ "serde_json",
+]
+
 [[package]]
 name = "base64"
 version = "0.13.0"
@@ -99,11 +123,20 @@ version = "3.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8f1e260c3a9040a7c19a12468758f4c16f31a81a1fe087482be9570ec864bb6c"
 
+[[package]]
+name = "byteorder"
+version = "1.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
+
 [[package]]
 name = "bytes"
 version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c4872d67bab6358e59559027aa3b9157c53d9358c51423c17554809a8858e0f8"
+dependencies = [
+ "serde",
+]
 
 [[package]]
 name = "cache-padded"
@@ -123,6 +156,20 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "chrono"
+version = "0.4.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "670ad68c9088c2a963aaa298cb369688cf3f9465ce5e2d4ca10e6e0098a1ce73"
+dependencies = [
+ "libc",
+ "num-integer",
+ "num-traits",
+ "serde",
+ "time",
+ "winapi",
+]
+
 [[package]]
 name = "concurrent-queue"
 version = "1.2.2"
@@ -139,10 +186,29 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "19b076e143e1d9538dde65da30f8481c2a6c44040edb8e02b9bf1351edb92ce3"
 dependencies = [
  "lazy_static",
- "nom",
+ "nom 5.1.2",
  "serde",
 ]
 
+[[package]]
+name = "crc32fast"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b540bd8bc810d3885c6ea91e2018302f68baba2129ab3e88f32389ee9370880d"
+dependencies = [
+ "cfg-if",
+]
+
+[[package]]
+name = "crossbeam-channel"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e54ea8bc3fb1ee042f5aace6e3c6e025d3874866da222930f70ce62aceba0bfa"
+dependencies = [
+ "cfg-if",
+ "crossbeam-utils",
+]
+
 [[package]]
 name = "crossbeam-queue"
 version = "0.3.2"
@@ -201,6 +267,18 @@ dependencies = [
  "instant",
 ]
 
+[[package]]
+name = "flate2"
+version = "1.0.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e6988e897c1c9c485f43b47a529cef42fde0547f9d8d41a7062518f1d8fc53f"
+dependencies = [
+ "cfg-if",
+ "crc32fast",
+ "libc",
+ "miniz_oxide",
+]
+
 [[package]]
 name = "fnv"
 version = "1.0.7"
@@ -340,7 +418,18 @@ checksum = "8fc3cb4d91f53b50155bdcfd23f6a4c39ae1969c2ae85982b135750cccaf5fce"
 dependencies = [
  "cfg-if",
  "libc",
- "wasi",
+ "wasi 0.9.0+wasi-snapshot-preview1",
+]
+
+[[package]]
+name = "getrandom"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d39cd93900197114fa1fcb7ae84ca742095eed9442088988ae74fa744e930e77"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi 0.10.2+wasi-snapshot-preview1",
 ]
 
 [[package]]
@@ -358,7 +447,7 @@ dependencies = [
  "indexmap",
  "slab",
  "tokio",
- "tokio-util",
+ "tokio-util 0.6.9",
  "tracing",
 ]
 
@@ -368,6 +457,20 @@ version = "0.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ab5ef0d4909ef3724cc8cce6ccc8572c5c817592e9285f5464f8e86f8bd3726e"
 
+[[package]]
+name = "hdrhistogram"
+version = "7.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "31672b7011be2c4f7456c4ddbcb40e7e9a4a9fad8efe49a6ebaf5f307d0109c0"
+dependencies = [
+ "base64",
+ "byteorder",
+ "crossbeam-channel",
+ "flate2",
+ "nom 7.1.0",
+ "num-traits",
+]
+
 [[package]]
 name = "hermit-abi"
 version = "0.1.19"
@@ -399,6 +502,16 @@ dependencies = [
  "pin-project-lite",
 ]
 
+[[package]]
+name = "http-serde"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6d98b3d9662de70952b14c4840ee0f37e23973542a363e2275f4b9d024ff6cca"
+dependencies = [
+ "http",
+ "serde",
+]
+
 [[package]]
 name = "http-types"
 version = "2.12.0"
@@ -412,7 +525,7 @@ dependencies = [
  "http",
  "infer",
  "pin-project-lite",
- "rand",
+ "rand 0.7.3",
  "serde",
  "serde_json",
  "serde_qs",
@@ -528,13 +641,17 @@ dependencies = [
 
 [[package]]
 name = "lambda_http"
-version = "0.4.1"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f10599c844cf7584c0dfbf6030df7c174cd5c91f2515412f8875de2a0f2b3fc5"
+checksum = "4bb7c9afbcde2a0fce839a6d6b773e35b100b4cb5d32d26fbc99dd9534d03687"
 dependencies = [
+ "aws_lambda_events",
  "base64",
+ "bytes",
  "http",
+ "http-body",
  "lambda_runtime",
+ "query_map",
  "serde",
  "serde_json",
  "serde_urlencoded",
@@ -542,22 +659,33 @@ dependencies = [
 
 [[package]]
 name = "lambda_runtime"
-version = "0.4.1"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "17ed88d8421123f9546cbd0c4235386803859c4a20b80a6eb613a652b486df8e"
+checksum = "23cbc35fd60573f46fa6c6292a4539198bc094efe4b7691a7ff8c173a56e0382"
 dependencies = [
  "async-stream",
  "bytes",
- "futures",
  "http",
  "hyper",
+ "lambda_runtime_api_client",
  "serde",
  "serde_json",
  "tokio",
  "tokio-stream",
- "tower-service",
+ "tower",
  "tracing",
- "tracing-error",
+]
+
+[[package]]
+name = "lambda_runtime_api_client"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e921024b5eb4e2f0800a5d6e25c7ed554562aa62f02cf5f60a48c26c8a678974"
+dependencies = [
+ "http",
+ "hyper",
+ "tokio",
+ "tower-service",
 ]
 
 [[package]]
@@ -621,6 +749,22 @@ version = "0.3.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2a60c7ce501c71e03a9c9c0d35b861413ae925bd979cc7a4e30d060069aaac8d"
 
+[[package]]
+name = "minimal-lexical"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
+
+[[package]]
+name = "miniz_oxide"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a92518e98c078586bc6c934028adcca4c92a53d6a958196de835170a01d84e4b"
+dependencies = [
+ "adler",
+ "autocfg",
+]
+
 [[package]]
 name = "mio"
 version = "0.7.14"
@@ -654,6 +798,17 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "nom"
+version = "7.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b1d11e1ef389c76fe5b81bcaf2ea32cf88b62bc494e19f493d0b30e7a930109"
+dependencies = [
+ "memchr",
+ "minimal-lexical",
+ "version_check",
+]
+
 [[package]]
 name = "ntapi"
 version = "0.3.6"
@@ -663,6 +818,25 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "num-integer"
+version = "0.1.44"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2cc698a63b549a70bc047073d2949cce27cd1c7b0a4a862d08a8031bc2801db"
+dependencies = [
+ "autocfg",
+ "num-traits",
+]
+
+[[package]]
+name = "num-traits"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a64b1ec5cda2586e284722486d802acf1f7dbdc623e2bfc57e65ca1cd099290"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "num_cpus"
 version = "1.13.0"
@@ -716,6 +890,26 @@ version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
 
+[[package]]
+name = "pin-project"
+version = "1.0.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "58ad3879ad3baf4e44784bc6a718a8698867bb991f8ce24d1bcbe2cfb4c3a75e"
+dependencies = [
+ "pin-project-internal",
+]
+
+[[package]]
+name = "pin-project-internal"
+version = "1.0.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "744b6f092ba29c3650faf274db506afd39944f48420f6c86b17cfe0ee1cb36bb"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "pin-project-lite"
 version = "0.2.7"
@@ -755,6 +949,17 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "query_map"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "af9b3184a42d995e58fefd23c04d277a2b4d51efb5df7ad4efbe0a43d77b5923"
+dependencies = [
+ "form_urlencoded",
+ "serde",
+ "serde_derive",
+]
+
 [[package]]
 name = "quote"
 version = "1.0.10"
@@ -770,13 +975,24 @@ version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6a6b1679d49b24bbfe0c803429aa1874472f50d9b363131f0e89fc356b544d03"
 dependencies = [
- "getrandom",
+ "getrandom 0.1.16",
  "libc",
- "rand_chacha",
- "rand_core",
+ "rand_chacha 0.2.2",
+ "rand_core 0.5.1",
  "rand_hc",
 ]
 
+[[package]]
+name = "rand"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+dependencies = [
+ "libc",
+ "rand_chacha 0.3.1",
+ "rand_core 0.6.3",
+]
+
 [[package]]
 name = "rand_chacha"
 version = "0.2.2"
@@ -784,7 +1000,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f4c8ed856279c9737206bf725bf36935d8666ead7aa69b52be55af369d193402"
 dependencies = [
  "ppv-lite86",
- "rand_core",
+ "rand_core 0.5.1",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
+dependencies = [
+ "ppv-lite86",
+ "rand_core 0.6.3",
 ]
 
 [[package]]
@@ -793,7 +1019,16 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "90bde5296fc891b0cef12a6d03ddccc162ce7b2aff54160af9338f8d40df6d19"
 dependencies = [
- "getrandom",
+ "getrandom 0.1.16",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d34f1408f55294453790c48b2f1ebbb1c5b4b7563eb1f418bcfcfdbb06ebb4e7"
+dependencies = [
+ "getrandom 0.2.5",
 ]
 
 [[package]]
@@ -802,7 +1037,7 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ca3129af7b92a17112d59ad498c6f81eaf463253766b90396d39ea7a39d6613c"
 dependencies = [
- "rand_core",
+ "rand_core 0.5.1",
 ]
 
 [[package]]
@@ -841,7 +1076,7 @@ dependencies = [
  "reqwest",
  "tokio",
  "tracing",
- "tracing-subscriber 0.3.2",
+ "tracing-subscriber",
  "wiremock",
 ]
 
@@ -1078,6 +1313,16 @@ dependencies = [
  "once_cell",
 ]
 
+[[package]]
+name = "time"
+version = "0.1.43"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca8a50ef2360fbd1eeb0ecd46795a87a19024eb4b53c5dc916ca1fd95fe62438"
+dependencies = [
+ "libc",
+ "winapi",
+]
+
 [[package]]
 name = "tinyvec"
 version = "1.5.1"
@@ -1156,6 +1401,47 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "tokio-util"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "64910e1b9c1901aaf5375561e35b9c057d95ff41a44ede043a03e09279eabaf1"
+dependencies = [
+ "bytes",
+ "futures-core",
+ "futures-sink",
+ "log",
+ "pin-project-lite",
+ "tokio",
+]
+
+[[package]]
+name = "tower"
+version = "0.4.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a89fd63ad6adf737582df5db40d286574513c69a11dac5214dc3b5603d6713e"
+dependencies = [
+ "futures-core",
+ "futures-util",
+ "hdrhistogram",
+ "indexmap",
+ "pin-project",
+ "pin-project-lite",
+ "rand 0.8.5",
+ "slab",
+ "tokio",
+ "tokio-util 0.7.0",
+ "tower-layer",
+ "tower-service",
+ "tracing",
+]
+
+[[package]]
+name = "tower-layer"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "343bc9466d3fe6b0f960ef45960509f84480bf4fd96f92901afe7ff3df9d3a62"
+
 [[package]]
 name = "tower-service"
 version = "0.3.1"
@@ -1195,16 +1481,6 @@ dependencies = [
  "lazy_static",
 ]
 
-[[package]]
-name = "tracing-error"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b4d7c0b83d4a500748fa5879461652b361edf5c9d51ede2a2ac03875ca185e24"
-dependencies = [
- "tracing",
- "tracing-subscriber 0.2.25",
-]
-
 [[package]]
 name = "tracing-log"
 version = "0.1.2"
@@ -1216,17 +1492,6 @@ dependencies = [
  "tracing-core",
 ]
 
-[[package]]
-name = "tracing-subscriber"
-version = "0.2.25"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0e0d2eaa99c3c2e41547cfa109e910a68ea03823cccad4a0525dcbc9b01e8c71"
-dependencies = [
- "sharded-slab",
- "thread_local",
- "tracing-core",
-]
-
 [[package]]
 name = "tracing-subscriber"
 version = "0.3.2"
@@ -1316,6 +1581,12 @@ version = "0.9.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
 
+[[package]]
+name = "wasi"
+version = "0.10.2+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+
 [[package]]
 name = "wasm-bindgen"
 version = "0.2.78"
diff --git a/Cargo.toml b/Cargo.toml
index eb0f4bf..41f4249 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,7 +15,7 @@ categories = ["web-programming::http-client", "network-programming"]
 
 [dependencies]
 bytes = "1.1.0"
-lambda_http = "0.4.1"
+lambda_http = "0.5.0"
 tokio = "1.16.1"
 lazy_static = "1.4.0"