diff --git a/Cargo-1.65.lock b/Cargo-1.65.lock
index 1600c51..5131014 100644
--- a/Cargo-1.65.lock
+++ b/Cargo-1.65.lock
@@ -128,6 +128,12 @@ version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "904dfeac50f3cdaba28fc6f57fdcddb75f49ed61346676a78c4ffe55877802fd"
 
+[[package]]
+name = "base64"
+version = "0.21.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9d297deb1925b89f2ccc13d7635fa0714f12c87adce1c75356b39ca9b7178567"
+
 [[package]]
 name = "bitflags"
 version = "1.2.1"
@@ -177,9 +183,9 @@ checksum = "c1db59621ec70f09c5e9b597b220c7a2b43611f4710dc03ceb8748637775692c"
 
 [[package]]
 name = "cc"
-version = "1.0.73"
+version = "1.0.90"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2fff2a6927b3bb87f9595d67196a70493f627687a71d87a0d692242c33f58c11"
+checksum = "8cd6604a82acf3039f1144f54b8eb34e91ffba622051189e71b781822d5ee1f5"
 
 [[package]]
 name = "cfg-if"
@@ -283,7 +289,7 @@ dependencies = [
  "openssl-probe",
  "openssl-sys",
  "schannel",
- "socket2",
+ "socket2 0.3.19",
  "winapi",
 ]
 
@@ -322,6 +328,12 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "equivalent"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
+
 [[package]]
 name = "event-listener"
 version = "2.5.2"
@@ -404,17 +416,6 @@ dependencies = [
  "waker-fn",
 ]
 
-[[package]]
-name = "futures-macro"
-version = "0.3.21"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "33c1e13800337f4d4d7a316bf45a567dbcb6ffe087f16424852d97e97a91f512"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "futures-sink"
 version = "0.3.21"
@@ -435,7 +436,6 @@ checksum = "d8b7abd5d659d9b90c8cba917f6ec750a74e2dc23902ef9cd4cc8c8b22e6036a"
 dependencies = [
  "futures-core",
  "futures-io",
- "futures-macro",
  "futures-task",
  "memchr",
  "pin-project-lite",
@@ -455,9 +455,9 @@ dependencies = [
 
 [[package]]
 name = "getrandom"
-version = "0.2.7"
+version = "0.2.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4eb1a864a501629691edf6c15a593b7a51eebaa1e8468e9ddc623de7c9b58ec6"
+checksum = "190092ea657667030ac6a35e305e62fc4dd69fd98ac98631e5d3a2b1575a12b5"
 dependencies = [
  "cfg-if",
  "js-sys",
@@ -480,9 +480,9 @@ dependencies = [
 
 [[package]]
 name = "h2"
-version = "0.3.13"
+version = "0.3.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "37a82c6d637fc9515a4694bbf1cb2457b79d81ce52b3108bdeea58b07dd34a57"
+checksum = "bb2c4422095b67ee78da96fbb51a4cc413b3b25883c7717ff7ca1ab31022c9c9"
 dependencies = [
  "bytes",
  "fnv",
@@ -499,9 +499,9 @@ dependencies = [
 
 [[package]]
 name = "hashbrown"
-version = "0.11.2"
+version = "0.14.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab5ef0d4909ef3724cc8cce6ccc8572c5c817592e9285f5464f8e86f8bd3726e"
+checksum = "290f1a1d9242c78d09ce40a5e87e7554ee637af1351968159f4952f028f75604"
 
 [[package]]
 name = "hermit-abi"
@@ -551,21 +551,21 @@ dependencies = [
 
 [[package]]
 name = "httparse"
-version = "1.7.1"
+version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "496ce29bb5a52785b44e0f7ca2847ae0bb839c9bd28f69acac9b99d461c0c04c"
+checksum = "d897f394bad6a705d5f4104762e116a75639e470d80901eed05a860a95cb1904"
 
 [[package]]
 name = "httpdate"
-version = "0.3.2"
+version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "494b4d60369511e7dea41cf646832512a94e542f68bb9c49e54518e0f468eb47"
+checksum = "df3b46402a9d5adb4c86a0cf463f42e19994e3ee891101b1841f30a545cb49a9"
 
 [[package]]
 name = "hyper"
-version = "0.14.4"
+version = "0.14.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e8e946c2b1349055e0b72ae281b238baf1a3ea7307c7e9f9d64673bdd9c26ac7"
+checksum = "b26ae0a80afebe130861d90abf98e3814a4f28a4c6ffeb5ab8ebb2be311e0ef2"
 dependencies = [
  "bytes",
  "futures-channel",
@@ -576,9 +576,9 @@ dependencies = [
  "http-body",
  "httparse",
  "httpdate",
- "itoa 0.4.8",
- "pin-project",
- "socket2",
+ "itoa 1.0.2",
+ "pin-project-lite",
+ "socket2 0.4.10",
  "tokio",
  "tower-service",
  "tracing",
@@ -587,17 +587,15 @@ dependencies = [
 
 [[package]]
 name = "hyper-rustls"
-version = "0.22.1"
+version = "0.23.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f9f7a97316d44c0af9b0301e65010573a853a9fc97046d7331d7f6bc0fd5a64"
+checksum = "1788965e61b367cd03a62950836d5cd41560c3577d90e40e0819373194d1661c"
 dependencies = [
- "futures-util",
+ "http",
  "hyper",
- "log",
- "rustls",
+ "rustls 0.20.9",
  "tokio",
  "tokio-rustls",
- "webpki",
 ]
 
 [[package]]
@@ -626,11 +624,11 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "1.7.0"
+version = "2.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc633605454125dec4b66843673f01c7df2b89479b32e0ed634e43a91cff62a5"
+checksum = "7b0b929d511467233429c45a44ac1dcaa21ba0f5ba11e4879e6ed28ddb4f9df4"
 dependencies = [
- "autocfg",
+ "equivalent",
  "hashbrown",
 ]
 
@@ -687,9 +685,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.126"
+version = "0.2.153"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "349d5a591cd28b49e1d1037471617a32ddcda5731b99419008085f72d5a53836"
+checksum = "9c198f91728a82281a64e1f4f9eeb25d82cb32a5de251c6bd1b5154d63a8e7bd"
 
 [[package]]
 name = "libz-sys"
@@ -765,9 +763,9 @@ dependencies = [
 
 [[package]]
 name = "native-tls"
-version = "0.2.7"
+version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b8d96b2e1c8da3957d58100b09f102c6d9cfdfced01b7ec5a8974044bb09dbd4"
+checksum = "07226173c32f2926027b63cce4bcd8076c3552846cbe7925f3aaffeac0a3b92e"
 dependencies = [
  "lazy_static",
  "libc",
@@ -788,7 +786,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "670361df1bc2399ee1ff50406a0d422587dd3bb0da596e1978fe8e05dabddf4f"
 dependencies = [
  "libc",
- "socket2",
+ "socket2 0.3.19",
 ]
 
 [[package]]
@@ -835,7 +833,7 @@ version = "5.0.0-alpha.3"
 dependencies = [
  "anyhow",
  "async-std",
- "base64",
+ "base64 0.13.0",
  "chrono",
  "curl",
  "getrandom",
@@ -931,26 +929,6 @@ version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
 
-[[package]]
-name = "pin-project"
-version = "1.0.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "78203e83c48cffbe01e4a2d35d566ca4de445d79a85372fc64e378bfc812a260"
-dependencies = [
- "pin-project-internal",
-]
-
-[[package]]
-name = "pin-project-internal"
-version = "1.0.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "710faf75e1b33345361201d36d04e98ac1ed8909151a017ed384700836104c74"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "pin-project-lite"
 version = "0.2.9"
@@ -1056,15 +1034,16 @@ dependencies = [
 
 [[package]]
 name = "reqwest"
-version = "0.11.0"
+version = "0.11.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd281b1030aa675fb90aa994d07187645bb3c8fc756ca766e7c3070b439de9de"
+checksum = "b75aa69a3f06bbcc66ede33af2af253c6f7a86b1ca0033f60c580a27074fbf92"
 dependencies = [
- "base64",
+ "base64 0.13.0",
  "bytes",
  "encoding_rs",
  "futures-core",
  "futures-util",
+ "h2",
  "http",
  "http-body",
  "hyper",
@@ -1078,17 +1057,20 @@ dependencies = [
  "native-tls",
  "percent-encoding",
  "pin-project-lite",
- "rustls",
+ "rustls 0.20.9",
+ "rustls-pemfile",
  "serde",
+ "serde_json",
  "serde_urlencoded",
  "tokio",
  "tokio-native-tls",
  "tokio-rustls",
+ "tower-service",
  "url",
  "wasm-bindgen",
  "wasm-bindgen-futures",
  "web-sys",
- "webpki-roots",
+ "webpki-roots 0.22.6",
  "winreg",
 ]
 
@@ -1101,23 +1083,59 @@ dependencies = [
  "cc",
  "libc",
  "once_cell",
- "spin",
- "untrusted",
+ "spin 0.5.2",
+ "untrusted 0.7.1",
  "web-sys",
  "winapi",
 ]
 
+[[package]]
+name = "ring"
+version = "0.17.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c17fa4cb658e3583423e915b9f3acc01cceaee1860e33d59ebae66adc3a2dc0d"
+dependencies = [
+ "cc",
+ "cfg-if",
+ "getrandom",
+ "libc",
+ "spin 0.9.8",
+ "untrusted 0.9.0",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "rustls"
 version = "0.19.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "35edb675feee39aec9c99fa5ff985081995a06d594114ae14cbe797ad7b7a6d7"
 dependencies = [
- "base64",
+ "base64 0.13.0",
  "log",
- "ring",
- "sct",
- "webpki",
+ "ring 0.16.20",
+ "sct 0.6.1",
+ "webpki 0.21.4",
+]
+
+[[package]]
+name = "rustls"
+version = "0.20.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b80e3dec595989ea8510028f30c408a4630db12c9cbb8de34203b89d6577e99"
+dependencies = [
+ "log",
+ "ring 0.16.20",
+ "sct 0.7.1",
+ "webpki 0.22.4",
+]
+
+[[package]]
+name = "rustls-pemfile"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1c74cae0a4cf6ccbbf5f359f08efdf8ee7e1dc532573bf0db71968cb56b1448c"
+dependencies = [
+ "base64 0.21.7",
 ]
 
 [[package]]
@@ -1133,7 +1151,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "88d6731146462ea25d9244b2ed5fd1d716d25c52e4d54aa4fb0f3c4e9854dbe2"
 dependencies = [
  "lazy_static",
- "windows-sys",
+ "windows-sys 0.36.1",
 ]
 
 [[package]]
@@ -1148,8 +1166,18 @@ version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b362b83898e0e69f38515b82ee15aa80636befe47c3b6d3d89a911e78fc228ce"
 dependencies = [
- "ring",
- "untrusted",
+ "ring 0.16.20",
+ "untrusted 0.7.1",
+]
+
+[[package]]
+name = "sct"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da046153aa2352493d6cb7da4b6e5c0c057d8a1d0a9aa8560baffdd945acd414"
+dependencies = [
+ "ring 0.17.8",
+ "untrusted 0.9.0",
 ]
 
 [[package]]
@@ -1270,12 +1298,28 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "socket2"
+version = "0.4.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9f7916fc008ca5542385b89a3d3ce689953c143e9304a9bf8beec1de48994c0d"
+dependencies = [
+ "libc",
+ "winapi",
+]
+
 [[package]]
 name = "spin"
 version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
 
+[[package]]
+name = "spin"
+version = "0.9.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6980e8d7511241f8acf4aebddbb1ff938df5eebe98691418c4468d0b72a96a67"
+
 [[package]]
 name = "subtle"
 version = "2.4.1"
@@ -1385,13 +1429,13 @@ dependencies = [
 
 [[package]]
 name = "tokio-rustls"
-version = "0.22.0"
+version = "0.23.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc6844de72e57df1980054b38be3a9f4702aba4858be64dd700181a8a6d0e1b6"
+checksum = "c43ee83903113e03984cb9e5cebe6c04a5116269e900e3ddba8f068a62adda59"
 dependencies = [
- "rustls",
+ "rustls 0.20.9",
  "tokio",
- "webpki",
+ "webpki 0.22.4",
 ]
 
 [[package]]
@@ -1485,20 +1529,26 @@ version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a156c684c91ea7d62626509bce3cb4e1d9ed5c4d978f7b4352658f96a4c26b4a"
 
+[[package]]
+name = "untrusted"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
+
 [[package]]
 name = "ureq"
 version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3131cd6cb18488da91da1d10ed31e966f453c06b65bf010d35638456976a3fd7"
 dependencies = [
- "base64",
+ "base64 0.13.0",
  "chunked_transfer",
  "log",
  "once_cell",
- "rustls",
+ "rustls 0.19.1",
  "url",
- "webpki",
- "webpki-roots",
+ "webpki 0.21.4",
+ "webpki-roots 0.21.1",
 ]
 
 [[package]]
@@ -1580,8 +1630,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b608ecc8f4198fe8680e2ed18eccab5f0cd4caaf3d83516fa5fb2e927fda2586"
 dependencies = [
  "cfg-if",
- "serde",
- "serde_json",
  "wasm-bindgen-macro",
 ]
 
@@ -1657,8 +1705,18 @@ version = "0.21.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b8e38c0608262c46d4a56202ebabdeb094cef7e560ca7a226c6bf055188aa4ea"
 dependencies = [
- "ring",
- "untrusted",
+ "ring 0.16.20",
+ "untrusted 0.7.1",
+]
+
+[[package]]
+name = "webpki"
+version = "0.22.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed63aea5ce73d0ff405984102c42de94fc55a6b75765d621c65262469b3c9b53"
+dependencies = [
+ "ring 0.17.8",
+ "untrusted 0.9.0",
 ]
 
 [[package]]
@@ -1667,7 +1725,16 @@ version = "0.21.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "aabe153544e473b775453675851ecc86863d2a81d786d741f6b76778f2a48940"
 dependencies = [
- "webpki",
+ "webpki 0.21.4",
+]
+
+[[package]]
+name = "webpki-roots"
+version = "0.22.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6c71e40d7d2c34a5106301fb632274ca37242cd0c9d3e64dbece371a40a2d87"
+dependencies = [
+ "webpki 0.22.4",
 ]
 
 [[package]]
@@ -1707,48 +1774,114 @@ version = "0.36.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ea04155a16a59f9eab786fe12a4a450e75cdb175f9e0d80da1e17db09f55b8d2"
 dependencies = [
- "windows_aarch64_msvc",
- "windows_i686_gnu",
- "windows_i686_msvc",
- "windows_x86_64_gnu",
- "windows_x86_64_msvc",
+ "windows_aarch64_msvc 0.36.1",
+ "windows_i686_gnu 0.36.1",
+ "windows_i686_msvc 0.36.1",
+ "windows_x86_64_gnu 0.36.1",
+ "windows_x86_64_msvc 0.36.1",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
+dependencies = [
+ "windows-targets",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.52.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7dd37b7e5ab9018759f893a1952c9420d060016fc19a472b4bb20d1bdd694d1b"
+dependencies = [
+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc 0.52.4",
+ "windows_i686_gnu 0.52.4",
+ "windows_i686_msvc 0.52.4",
+ "windows_x86_64_gnu 0.52.4",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc 0.52.4",
 ]
 
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.52.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bcf46cf4c365c6f2d1cc93ce535f2c8b244591df96ceee75d8e83deb70a9cac9"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.36.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9bb8c3fd39ade2d67e9874ac4f3db21f0d710bee00fe7cab16949ec184eeaa47"
 
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.52.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da9f259dd3bcf6990b55bffd094c4f7235817ba4ceebde8e6d11cd0c5633b675"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.36.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "180e6ccf01daf4c426b846dfc66db1fc518f074baa793aa7d9b9aaeffad6a3b6"
 
+[[package]]
+name = "windows_i686_gnu"
+version = "0.52.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b474d8268f99e0995f25b9f095bc7434632601028cf86590aea5c8a5cb7801d3"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.36.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e2e7917148b2812d1eeafaeb22a97e4813dfa60a3f8f78ebe204bcc88f12f024"
 
+[[package]]
+name = "windows_i686_msvc"
+version = "0.52.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1515e9a29e5bed743cb4415a9ecf5dfca648ce85ee42e15873c3cd8610ff8e02"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.36.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4dcd171b8776c41b97521e5da127a2d86ad280114807d0b2ab1e462bc764d9e1"
 
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.52.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5eee091590e89cc02ad514ffe3ead9eb6b660aedca2183455434b93546371a03"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.52.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77ca79f2451b49fa9e2af39f0747fe999fcda4f5e241b2898624dca97a1f2177"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.36.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c811ca4a8c853ef420abd8592ba53ddbbac90410fab6903b3e79972a631f7680"
 
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.52.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32b752e52a2da0ddfbdbcc6fceadfeede4c939ed16d13e648833a61dfb611ed8"
+
 [[package]]
 name = "winreg"
-version = "0.7.0"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0120db82e8a1e0b9fb3345a539c478767c0048d842860994d96113d5b667bd69"
+checksum = "80d0f4e272c85def139476380b12f9ac60926689dd2e01d4923222f40580869d"
 dependencies = [
  "winapi",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 42490e0..768126b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -52,7 +52,7 @@ base64 = "0.13"
 thiserror = "1.0"
 http = "0.2"
 rand = "0.8"
-reqwest = { version = "0.11", optional = true, default-features = false }
+reqwest = { version = "0.11.11", optional = true, default-features = false }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 sha2 = "0.10"
diff --git a/src/devicecode.rs b/src/devicecode.rs
index 63141ab..dac082a 100644
--- a/src/devicecode.rs
+++ b/src/devicecode.rs
@@ -121,7 +121,7 @@ where
 
 impl<'a, TE> DeviceAuthorizationRequest<'a, TE>
 where
-    TE: ErrorResponse + 'static,
+    TE: ErrorResponse + Send + Sync + 'static,
 {
     /// Appends an extra param to the token request.
     ///
@@ -196,7 +196,7 @@ where
     ) -> Pin<Box<DeviceAuthorizationRequestFuture<'c, C, EF, TE>>>
     where
         Self: 'c,
-        C: AsyncHttpClient<'c>,
+        C: AsyncHttpClient<'c> + Send + Sync,
         EF: ExtraDeviceAuthorizationFields,
     {
         Box::pin(async move { endpoint_response(http_client.call(self.prepare_request()?).await?) })
@@ -331,9 +331,12 @@ where
     >
     where
         Self: 'c,
-        C: AsyncHttpClient<'c>,
-        S: Fn(Duration) -> SF + 'c,
-        SF: Future<Output = ()>,
+        C: AsyncHttpClient<'c> + Send + Sync,
+        EF: Send + Sync,
+        S: Fn(Duration) -> SF + Send + Sync + 'c,
+        SF: Future<Output = ()> + Send + Sync,
+        TR: Send + Sync,
+        TT: Send + Sync,
     {
         Box::pin(async move {
             // Get the request timeout and starting interval
diff --git a/src/endpoint.rs b/src/endpoint.rs
index ffdddf0..fed2dc6 100644
--- a/src/endpoint.rs
+++ b/src/endpoint.rs
@@ -22,18 +22,18 @@ pub type HttpResponse = http::Response<Vec<u8>>;
 /// An asynchronous (future-based) HTTP client.
 pub trait AsyncHttpClient<'c> {
     /// Error type returned by HTTP client.
-    type Error: Error + 'static;
+    type Error: Error + Send + Sync + 'static;
 
     /// Perform a single HTTP request.
     fn call(
         &'c self,
         request: HttpRequest,
-    ) -> Pin<Box<dyn Future<Output = Result<HttpResponse, Self::Error>> + 'c>>;
+    ) -> Pin<Box<dyn Future<Output = Result<HttpResponse, Self::Error>> + Send + Sync + 'c>>;
 }
 impl<'c, E, F, T> AsyncHttpClient<'c> for T
 where
-    E: Error + 'static,
-    F: Future<Output = Result<HttpResponse, E>> + 'c,
+    E: Error + Send + Sync + 'static,
+    F: Future<Output = Result<HttpResponse, E>> + Send + Sync + 'c,
     // We can't implement this for FnOnce because the device authorization flow requires clients to
     // supportmultiple calls.
     T: Fn(HttpRequest) -> F,
@@ -43,7 +43,7 @@ where
     fn call(
         &'c self,
         request: HttpRequest,
-    ) -> Pin<Box<dyn Future<Output = Result<HttpResponse, Self::Error>> + 'c>> {
+    ) -> Pin<Box<dyn Future<Output = Result<HttpResponse, Self::Error>> + Send + Sync + 'c>> {
         Box::pin(self(request))
     }
 }
diff --git a/src/introspection.rs b/src/introspection.rs
index d12a93c..6253c4e 100644
--- a/src/introspection.rs
+++ b/src/introspection.rs
@@ -183,7 +183,10 @@ where
     ) -> Pin<Box<TokenRequestFuture<'c, <C as AsyncHttpClient<'c>>::Error, TE, TIR>>>
     where
         Self: 'c,
-        C: AsyncHttpClient<'c>,
+        C: AsyncHttpClient<'c> + Send + Sync,
+        TE: Send + Sync,
+        TIR: Send + Sync,
+        TT: Send + Sync,
     {
         Box::pin(async move { endpoint_response(http_client.call(self.prepare_request()?).await?) })
     }
diff --git a/src/reqwest_client.rs b/src/reqwest_client.rs
index 594e49d..682db59 100644
--- a/src/reqwest_client.rs
+++ b/src/reqwest_client.rs
@@ -9,7 +9,7 @@ impl<'c> AsyncHttpClient<'c> for reqwest::Client {
     fn call(
         &'c self,
         request: HttpRequest,
-    ) -> Pin<Box<dyn Future<Output = Result<HttpResponse, Self::Error>> + 'c>> {
+    ) -> Pin<Box<dyn Future<Output = Result<HttpResponse, Self::Error>> + Send + Sync + 'c>> {
         Box::pin(async move {
             let response = self
                 .execute(request.try_into().map_err(Box::new)?)
diff --git a/src/revocation.rs b/src/revocation.rs
index 192e751..491c297 100644
--- a/src/revocation.rs
+++ b/src/revocation.rs
@@ -305,7 +305,9 @@ where
     ) -> Pin<Box<TokenRequestFuture<'c, <C as AsyncHttpClient<'c>>::Error, TE, ()>>>
     where
         Self: 'c,
-        C: AsyncHttpClient<'c>,
+        C: AsyncHttpClient<'c> + Send + Sync,
+        RT: Send + Sync,
+        TE: Send + Sync,
     {
         Box::pin(async move { endpoint_response(http_client.call(self.prepare_request()?).await?) })
     }
diff --git a/src/token/mod.rs b/src/token/mod.rs
index 9e57851..db15548 100644
--- a/src/token/mod.rs
+++ b/src/token/mod.rs
@@ -131,7 +131,7 @@ where
 
 /// Future returned by `request_async` methods.
 pub type TokenRequestFuture<'c, RE, TE, TR> =
-    dyn Future<Output = Result<TR, RequestTokenError<RE, TE>>> + 'c;
+    dyn Future<Output = Result<TR, RequestTokenError<RE, TE>>> + Send + Sync + 'c;
 
 /// A request to exchange an authorization code for an access token.
 ///
@@ -240,7 +240,10 @@ where
     ) -> Pin<Box<TokenRequestFuture<'c, <C as AsyncHttpClient<'c>>::Error, TE, TR>>>
     where
         Self: 'c,
-        C: AsyncHttpClient<'c>,
+        C: AsyncHttpClient<'c> + Send + Sync,
+        TE: Send + Sync,
+        TR: Send + Sync,
+        TT: Send + Sync,
     {
         Box::pin(async move { endpoint_response(http_client.call(self.prepare_request()?).await?) })
     }
@@ -325,7 +328,10 @@ where
     ) -> Pin<Box<TokenRequestFuture<'c, <C as AsyncHttpClient<'c>>::Error, TE, TR>>>
     where
         Self: 'c,
-        C: AsyncHttpClient<'c>,
+        C: AsyncHttpClient<'c> + Send + Sync,
+        TE: Send + Sync,
+        TR: Send + Sync,
+        TT: Send + Sync,
     {
         Box::pin(async move { endpoint_response(http_client.call(self.prepare_request()?).await?) })
     }
@@ -432,7 +438,10 @@ where
     ) -> Pin<Box<TokenRequestFuture<'c, <C as AsyncHttpClient<'c>>::Error, TE, TR>>>
     where
         Self: 'c,
-        C: AsyncHttpClient<'c>,
+        C: AsyncHttpClient<'c> + Send + Sync,
+        TE: Send + Sync,
+        TR: Send + Sync,
+        TT: Send + Sync,
     {
         Box::pin(async move { endpoint_response(http_client.call(self.prepare_request()?).await?) })
     }
@@ -538,7 +547,10 @@ where
     ) -> Pin<Box<TokenRequestFuture<'c, <C as AsyncHttpClient<'c>>::Error, TE, TR>>>
     where
         Self: 'c,
-        C: AsyncHttpClient<'c>,
+        C: AsyncHttpClient<'c> + Send + Sync,
+        TE: Send + Sync,
+        TR: Send + Sync,
+        TT: Send + Sync,
     {
         Box::pin(async move { endpoint_response(http_client.call(self.prepare_request()?).await?) })
     }