diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1a69295..0551341 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,7 +18,7 @@ jobs:
           - stable
           - beta
           - nightly
-          - 1.51.0
+          - 1.68.2
     steps:
       - uses: actions/checkout@v2.3.4
       - uses: actions-rs/toolchain@v1.0.7
diff --git a/Cargo.lock b/Cargo.lock
index c8b2aae..f9ff88b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -9,14 +9,14 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "465a6172cf69b960917811022d8f29bc0b7fa1398bc4f78b3c466673db1213b6"
 dependencies = [
  "quote",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
 name = "actix-rt"
-version = "2.7.0"
+version = "2.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7ea16c295198e958ef31930a6ef37d0fb64e9ca3b6116e6b93a8bdae96ee1000"
+checksum = "15265b6b8e2347670eb363c47fc8c75208b4a4994b27192f345fcbe707804f3e"
 dependencies = [
  "actix-macros",
  "futures-core",
@@ -33,21 +33,10 @@ dependencies = [
 ]
 
 [[package]]
-name = "arc-swap"
-version = "0.4.0"
+name = "autocfg"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6e43c468bcaa343ddcad9e46806e066e39f62434898b20f5af21261da910d5c7"
-
-[[package]]
-name = "atty"
-version = "0.2.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8352656fd42c30a0c3c89d26dea01e3b77c0ab2af18230835c15e2e13cd51859"
-dependencies = [
- "libc",
- "termion",
- "winapi",
-]
+checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 
 [[package]]
 name = "bitflags"
@@ -57,15 +46,15 @@ checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
 name = "bumpalo"
-version = "3.2.1"
+version = "3.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12ae9db68ad7fac5fe51304d20f016c911539251075a214f8e663babefa35187"
+checksum = "0d261e256854913907f67ed06efbc3338dfe6179796deefc1ff763fc1aee5535"
 
 [[package]]
-name = "cfg-if"
-version = "0.1.3"
+name = "cc"
+version = "1.0.79"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "405216fd8fe65f718daa7102ea808a946b6ce40c742998fbfd3463645552de18"
+checksum = "50d30906286121d95be3d479533b458f87493b30a4b5f79a607db8f5d11aa91f"
 
 [[package]]
 name = "cfg-if"
@@ -79,51 +68,77 @@ version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a06aeb73f470f66dcdbf7223caeebb85984942f22f1adb2a088cf9668146bbbc"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "wasm-bindgen",
 ]
 
 [[package]]
 name = "dashmap"
-version = "5.1.0"
+version = "5.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c0834a35a3fce649144119e18da2a4d8ed12ef3862f47183fd46f625d072d96c"
+checksum = "907076dfda823b0b36d2a1bb5f90c96660a5bbcd7729e10727f07858f22c4edc"
 dependencies = [
- "cfg-if 1.0.0",
- "num_cpus",
- "parking_lot",
+ "cfg-if",
+ "hashbrown",
+ "lock_api",
+ "once_cell",
+ "parking_lot_core",
 ]
 
 [[package]]
 name = "document-features"
-version = "0.2.0"
+version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b0145598eea78b706096d9d2c574031ce2fd988daac32f44338a62897bf9e520"
+checksum = "e493c573fce17f00dcab13b6ac057994f3ce17d1af4dc39bfd482b83c6eb6157"
+dependencies = [
+ "litrs",
+]
 
 [[package]]
 name = "either"
-version = "1.0.0"
+version = "1.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5845bf77d497f79416df39462df26d4a8b71dd6440246848ee63709476dbb9a6"
+checksum = "7fcaabb2fef8c910e7f4c7ce9f67a1283a1715879a7c230ca9d6d1ae31f16d91"
 
 [[package]]
 name = "env_logger"
-version = "0.9.3"
+version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a12e6657c4c97ebab115a42dcee77225f7f482cdd841cf7088c657a42e9e00e7"
+checksum = "85cdab6a89accf66733ad5a1693a4dcced6aeff64602b634530dd73c1f3ee9f0"
 dependencies = [
- "atty",
  "humantime",
+ "is-terminal",
  "log",
  "regex",
  "termcolor",
 ]
 
+[[package]]
+name = "errno"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "50d6a0976c999d473fe89ad888d5a284e55366d9dc9038b1ba2aa15128c4afa0"
+dependencies = [
+ "errno-dragonfly",
+ "libc",
+ "windows-sys",
+]
+
+[[package]]
+name = "errno-dragonfly"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa68f1b12764fab894d2755d2518754e71b4fd80ecfb822714a1206c2aab39bf"
+dependencies = [
+ "cc",
+ "libc",
+]
+
 [[package]]
 name = "fslock"
-version = "0.2.0"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "31bbcaaf785e09a604b93b15b9ccb41cbf4716fa04c788748d157cb3134d717b"
+checksum = "04412b8935272e3a9bae6f48c7bfff74c2911f60525404edfdd28e49884c3bfb"
 dependencies = [
  "libc",
  "winapi",
@@ -131,9 +146,9 @@ dependencies = [
 
 [[package]]
 name = "futures"
-version = "0.3.21"
+version = "0.3.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f73fe65f54d1e12b726f517d3e2135ca3125a437b6d998caf1962961f7172d9e"
+checksum = "531ac96c6ff5fd7c62263c5e3c67a603af4fcaee2e1a0ae5565ba3a11e69e549"
 dependencies = [
  "futures-channel",
  "futures-core",
@@ -146,9 +161,9 @@ dependencies = [
 
 [[package]]
 name = "futures-channel"
-version = "0.3.21"
+version = "0.3.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3083ce4b914124575708913bca19bfe887522d6e2e6d0952943f5eac4a74010"
+checksum = "164713a5a0dcc3e7b4b1ed7d3b433cabc18025386f9339346e8daf15963cf7ac"
 dependencies = [
  "futures-core",
  "futures-sink",
@@ -156,15 +171,15 @@ dependencies = [
 
 [[package]]
 name = "futures-core"
-version = "0.3.21"
+version = "0.3.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0c09fd04b7e4073ac7156a9539b57a484a8ea920f79c7c675d05d289ab6110d3"
+checksum = "86d7a0c1aa76363dac491de0ee99faf6941128376f1cf96f07db7603b7de69dd"
 
 [[package]]
 name = "futures-executor"
-version = "0.3.21"
+version = "0.3.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9420b90cfa29e327d0429f19be13e7ddb68fa1cccb09d65e5706b8c7a749b8a6"
+checksum = "1997dd9df74cdac935c76252744c1ed5794fac083242ea4fe77ef3ed60ba0f83"
 dependencies = [
  "futures-core",
  "futures-task",
@@ -173,27 +188,27 @@ dependencies = [
 
 [[package]]
 name = "futures-io"
-version = "0.3.21"
+version = "0.3.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc4045962a5a5e935ee2fdedaa4e08284547402885ab326734432bed5d12966b"
+checksum = "89d422fa3cbe3b40dca574ab087abb5bc98258ea57eea3fd6f1fa7162c778b91"
 
 [[package]]
 name = "futures-sink"
-version = "0.3.21"
+version = "0.3.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "21163e139fa306126e6eedaf49ecdb4588f939600f0b1e770f4205ee4b7fa868"
+checksum = "ec93083a4aecafb2a80a885c9de1f0ccae9dbd32c2bb54b0c3a65690e0b8d2f2"
 
 [[package]]
 name = "futures-task"
-version = "0.3.21"
+version = "0.3.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "57c66a976bf5909d801bbef33416c41372779507e7a6b3a5e25e4749c58f776a"
+checksum = "fd65540d33b37b16542a0438c12e6aeead10d4ac5d05bd3f805b8f35ab592879"
 
 [[package]]
 name = "futures-util"
-version = "0.3.21"
+version = "0.3.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d8b7abd5d659d9b90c8cba917f6ec750a74e2dc23902ef9cd4cc8c8b22e6036a"
+checksum = "3ef6b17e481503ec85211fed8f39d1970f128935ca1f814cd32ac4a6842e84ab"
 dependencies = [
  "futures-channel",
  "futures-core",
@@ -206,67 +221,106 @@ dependencies = [
  "slab",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
+
 [[package]]
 name = "hermit-abi"
-version = "0.1.3"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fed44880c466736ef9a5c5b5facefb5ed0785676d0c02d612db14e54f0d84286"
+
+[[package]]
+name = "humantime"
+version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "307c3c9f937f38e3534b1d6447ecf090cafcc9744e4a6360e8b037b2cf5af120"
+checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
+
+[[package]]
+name = "io-lifetimes"
+version = "1.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09270fd4fa1111bc614ed2246c7ef56239a3063d5be0d1ec3b589c505d400aeb"
 dependencies = [
+ "hermit-abi",
  "libc",
+ "windows-sys",
 ]
 
 [[package]]
-name = "humantime"
-version = "2.0.0"
+name = "is-terminal"
+version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b9b6c53306532d3c8e8087b44e6580e10db51a023cf9b433cea2ac38066b92da"
+checksum = "256017f749ab3117e93acb91063009e1f1bb56d03965b14c2c8df4eb02c524d8"
+dependencies = [
+ "hermit-abi",
+ "io-lifetimes",
+ "rustix",
+ "windows-sys",
+]
 
 [[package]]
 name = "itertools"
-version = "0.10.0"
+version = "0.10.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "37d572918e350e82412fe766d24b15e6682fb2ed2bbe018280caa810397cb319"
+checksum = "b0fd2260e829bddf4cb6ea802289de2f86d6a7a690192fbe91b3f46e0f2c8473"
 dependencies = [
  "either",
 ]
 
 [[package]]
 name = "js-sys"
-version = "0.3.58"
+version = "0.3.61"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3fac17f7123a73ca62df411b1bf727ccc805daa070338fda671c86dac1bdc27"
+checksum = "445dde2150c55e483f3d8416706b97ec8e8237c307e5b7b4b8dd15e6af2a0730"
 dependencies = [
  "wasm-bindgen",
 ]
 
 [[package]]
 name = "lazy_static"
-version = "1.2.0"
+version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a374c89b9db55895453a74c1e38861d9deec0b01b405a82516e9d5de4820dea1"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.138"
+version = "0.2.140"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "99227334921fae1a979cf0bfdfcc6b3e5ce376ef57e16fb6fb3ea2ed6095f80c"
+
+[[package]]
+name = "linux-raw-sys"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "db6d7e329c562c5dfab7a46a2afabc8b987ab9a4834c9d1ca04dc54c1546cef8"
+checksum = "cd550e73688e6d578f0ac2119e32b797a327631a42f9433e59d02e139c8df60d"
+
+[[package]]
+name = "litrs"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f9275e0933cf8bb20f008924c0cb07a0692fe54d8064996520bf998de9eb79aa"
 
 [[package]]
 name = "lock_api"
-version = "0.4.6"
+version = "0.4.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "88943dd7ef4a2e5a4bfa2753aaab3013e34ce2533d1996fb18ef591e315e2b3b"
+checksum = "435011366fe56583b16cf956f9df0095b405b82d76425bc8981c0e22e60ec4df"
 dependencies = [
+ "autocfg",
  "scopeguard",
 ]
 
 [[package]]
 name = "log"
-version = "0.4.8"
+version = "0.4.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "14b6052be84e6b71ab17edffc2eeabf5c2c3ae1fdb464aae35ac50c67a44e1f7"
+checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
 dependencies = [
- "cfg-if 0.1.3",
+ "cfg-if",
 ]
 
 [[package]]
@@ -277,31 +331,27 @@ checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
 
 [[package]]
 name = "mio"
-version = "0.8.5"
+version = "0.8.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e5d732bc30207a6423068df043e3d02e0735b155ad7ce1a6f76fe2baa5b158de"
+checksum = "5b9d9a46eff5b4ff64b45a9e316a6d1e0bc719ef429cbec4dc630684212bfdf9"
 dependencies = [
  "libc",
  "log",
  "wasi",
- "windows-sys 0.42.0",
+ "windows-sys",
 ]
 
 [[package]]
-name = "num_cpus"
-version = "1.13.1"
+name = "once_cell"
+version = "1.17.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "19e64526ebdee182341572e50e9ad03965aa510cd94427a4549448f285e957a1"
-dependencies = [
- "hermit-abi",
- "libc",
-]
+checksum = "b7e5500299e16ebb147ae15a00a942af264cf3688f47923b8fc2cd5858f23ad3"
 
 [[package]]
 name = "parking_lot"
-version = "0.12.0"
+version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "87f5ec2493a61ac0506c0f4199f99070cbe83857b0337006a30f3e6719b8ef58"
+checksum = "3742b2c103b9f06bc9fff0a37ff4912935851bee6d36f3c02bcc755bcfec228f"
 dependencies = [
  "lock_api",
  "parking_lot_core",
@@ -309,22 +359,22 @@ dependencies = [
 
 [[package]]
 name = "parking_lot_core"
-version = "0.9.0"
+version = "0.9.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b2f4f894f3865f6c0e02810fc597300f34dc2510f66400da262d8ae10e75767d"
+checksum = "9069cbb9f99e3a5083476ccb29ceb1de18b9118cafa53e90c9551235de2b9521"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "libc",
- "redox_syscall 0.2.8",
+ "redox_syscall",
  "smallvec",
- "windows-sys 0.29.0",
+ "windows-sys",
 ]
 
 [[package]]
 name = "pin-project-lite"
-version = "0.2.5"
+version = "0.2.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0cf491442e4b033ed1c722cb9f0df5fcfcf4de682466c46469c36bc47dc5548a"
+checksum = "e0a7ae3ac2f1173085d398531c705756c94a4c56843785df85a60c1a0afac116"
 
 [[package]]
 name = "pin-utils"
@@ -334,51 +384,36 @@ checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.23"
+version = "1.0.52"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "51ef7cd2518ead700af67bf9d1a658d90b6037d77110fd9c0445429d0ba1c6c9"
+checksum = "1d0e1ae9e836cc3beddd63db0df682593d7e2d3d891ae8c9083d2113e1744224"
 dependencies = [
- "unicode-xid",
+ "unicode-ident",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.3"
+version = "1.0.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2bdc6c187c65bca4260c9011c9e3132efe4909da44726bad24cf7572ae338d7f"
+checksum = "4424af4bf778aae2051a77b60283332f386554255d722233d09fbfc7e30da2fc"
 dependencies = [
  "proc-macro2",
 ]
 
 [[package]]
 name = "redox_syscall"
-version = "0.1.38"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0a12d51a5b5fd700e6c757f15877685bfa04fd7eb60c108f01d045cafa0073c2"
-
-[[package]]
-name = "redox_syscall"
-version = "0.2.8"
+version = "0.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "742739e41cd49414de871ea5e549afb7e2a3ac77b589bcbebe8c82fab37147fc"
+checksum = "fb5a58c1855b4b6819d59012155603f0b22ad30cad752600aadfcb695265519a"
 dependencies = [
  "bitflags",
 ]
 
-[[package]]
-name = "redox_termios"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc495930de8d330f14856cface52561b7d79a072c76e438cf8f34d7233a35fa7"
-dependencies = [
- "redox_syscall 0.1.38",
-]
-
 [[package]]
 name = "regex"
-version = "1.7.0"
+version = "1.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e076559ef8e241f2ae3479e36f97bd5741c0330689e217ad51ce2c76808b868a"
+checksum = "48aaa5748ba571fb95cd2c85c09f629215d3a6ece942baa100950af03a34f733"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -391,6 +426,20 @@ version = "0.6.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "456c603be3e8d448b072f410900c09faf164fbce2d480456f50eea6e25f9c848"
 
+[[package]]
+name = "rustix"
+version = "0.37.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0e78cc525325c06b4a7ff02db283472f3c042b7ff0c391f96c6d5ac6f4f91b75"
+dependencies = [
+ "bitflags",
+ "errno",
+ "io-lifetimes",
+ "libc",
+ "linux-raw-sys",
+ "windows-sys",
+]
+
 [[package]]
 name = "scoped-tls"
 version = "1.0.0"
@@ -426,7 +475,7 @@ dependencies = [
  "env_logger",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.4",
 ]
 
 [[package]]
@@ -446,31 +495,33 @@ dependencies = [
 
 [[package]]
 name = "signal-hook-registry"
-version = "1.1.1"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1797d48f38f91643908bb14e35e79928f9f4b3cefb2420a564dde0991b4358dc"
+checksum = "d8229b473baa5980ac72ef434c4415e70c4b5e71b423043adb4ba059f89c99a1"
 dependencies = [
- "arc-swap",
  "libc",
 ]
 
 [[package]]
 name = "slab"
-version = "0.4.2"
+version = "0.4.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
+checksum = "6528351c9bc8ab22353f9d776db39a20288e8d6c37ef8cfe3317cf875eecfc2d"
+dependencies = [
+ "autocfg",
+]
 
 [[package]]
 name = "smallvec"
-version = "1.6.1"
+version = "1.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fe0f37c9e8f3c5a4a66ad655a93c74daac4ad00c441533bf5c6e7990bb42604e"
+checksum = "a507befe795404456341dfab10cef66ead4c041f62b8b11bbb92bffe5d0953e0"
 
 [[package]]
 name = "socket2"
-version = "0.4.4"
+version = "0.4.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "66d72b759436ae32898a2af0a14218dbf55efde3feeb170eb623637db85ee1e0"
+checksum = "64a4a911eed85daf18834cfaa86a79b7d266ff93ff5ba14005426219480ed662"
 dependencies = [
  "libc",
  "winapi",
@@ -478,41 +529,42 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.67"
+version = "1.0.109"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6498a9efc342871f91cc2d0d694c674368b4ceb40f62b65a7a08c3792935e702"
+checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
 dependencies = [
  "proc-macro2",
  "quote",
- "unicode-xid",
+ "unicode-ident",
 ]
 
 [[package]]
-name = "termcolor"
-version = "1.1.3"
+name = "syn"
+version = "2.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bab24d30b911b2376f3a13cc2cd443142f0c81dda04c118693e35b3835757755"
+checksum = "2c622ae390c9302e214c31013517c2061ecb2699935882c60a9b37f82f8625ae"
 dependencies = [
- "winapi-util",
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
 ]
 
 [[package]]
-name = "termion"
-version = "1.5.0"
+name = "termcolor"
+version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8affd752d0f2c7127d6d5f1b98182a5471606b48b1a955165d39eb5e4887ceba"
+checksum = "be55cf8942feac5c765c2c993422806843c9a9a45d4d5c407ad6dd2ea95eb9b6"
 dependencies = [
- "libc",
- "redox_syscall 0.1.38",
- "redox_termios",
+ "winapi-util",
 ]
 
 [[package]]
 name = "tokio"
-version = "1.18.5"
+version = "1.27.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0e050c618355082ae5a89ec63bbf897225d5ffe84c7c4e036874e4d185a5044e"
+checksum = "d0de47a4eecbe11f498978a9b29d792f0d2692d1dd003650c24c76510e3bc001"
 dependencies = [
+ "autocfg",
  "libc",
  "mio",
  "parking_lot",
@@ -520,25 +572,25 @@ dependencies = [
  "signal-hook-registry",
  "socket2",
  "tokio-macros",
- "winapi",
+ "windows-sys",
 ]
 
 [[package]]
 name = "tokio-macros"
-version = "1.7.0"
+version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b557f72f448c511a979e2564e55d74e6c4432fc96ff4f6241bc6bded342643b7"
+checksum = "61a573bdc87985e9d6ddeed1b3d864e8a302c847e40d647746df2f1de209d1ce"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.4",
 ]
 
 [[package]]
-name = "unicode-xid"
-version = "0.2.0"
+name = "unicode-ident"
+version = "1.0.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
+checksum = "e5464a87b239f13a63a501f2701565754bae92d243d4bb7eb12f6d57d2269bf4"
 
 [[package]]
 name = "wasi"
@@ -548,36 +600,36 @@ checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
 [[package]]
 name = "wasm-bindgen"
-version = "0.2.81"
+version = "0.2.84"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7c53b543413a17a202f4be280a7e5c62a1c69345f5de525ee64f8cfdbc954994"
+checksum = "31f8dcbc21f30d9b8f2ea926ecb58f6b91192c17e9d33594b3df58b2007ca53b"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "wasm-bindgen-macro",
 ]
 
 [[package]]
 name = "wasm-bindgen-backend"
-version = "0.2.81"
+version = "0.2.84"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5491a68ab4500fa6b4d726bd67408630c3dbe9c4fe7bda16d5c82a1fd8c7340a"
+checksum = "95ce90fd5bcc06af55a641a86428ee4229e44e07033963a2290a8e241607ccb9"
 dependencies = [
  "bumpalo",
- "lazy_static",
  "log",
+ "once_cell",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
  "wasm-bindgen-shared",
 ]
 
 [[package]]
 name = "wasm-bindgen-futures"
-version = "0.4.31"
+version = "0.4.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "de9a9cec1733468a8c657e57fa2413d2ae2c0129b95e87c5b72b8ace4d13f31f"
+checksum = "f219e0d211ba40266969f6dbdd90636da12f75bee4fc9d6c23d1260dadb51454"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "js-sys",
  "wasm-bindgen",
  "web-sys",
@@ -585,9 +637,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.81"
+version = "0.2.84"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c441e177922bc58f1e12c022624b6216378e5febc2f0533e41ba443d505b80aa"
+checksum = "4c21f77c0bedc37fd5dc21f897894a5ca01e7bb159884559461862ae90c0b4c5"
 dependencies = [
  "quote",
  "wasm-bindgen-macro-support",
@@ -595,28 +647,28 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.81"
+version = "0.2.84"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7d94ac45fcf608c1f45ef53e748d35660f168490c10b23704c7779ab8f5c3048"
+checksum = "2aff81306fcac3c7515ad4e177f521b5c9a15f2b08f4e32d823066102f35a5f6"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.81"
+version = "0.2.84"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a89911bd99e5f3659ec4acf9c4d93b0a90fe4a2a11f15328472058edc5261be"
+checksum = "0046fef7e28c3804e5e38bfa31ea2a0f73905319b677e57ebe37e49358989b5d"
 
 [[package]]
 name = "wasm-bindgen-test"
-version = "0.3.31"
+version = "0.3.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "68b30cf2cba841a812f035c40c50f53eb9c56181192a9dd2c71b65e6a87a05ba"
+checksum = "6db36fc0f9fb209e88fb3642590ae0205bb5a56216dabd963ba15879fe53a30b"
 dependencies = [
  "console_error_panic_hook",
  "js-sys",
@@ -628,9 +680,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-test-macro"
-version = "0.3.31"
+version = "0.3.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "88ad594bf33e73cafcac2ae9062fc119d4f75f9c77e25022f91c9a64bd5b6463"
+checksum = "0734759ae6b3b1717d661fe4f016efcfb9828f5edb4520c18eaee05af3b43be9"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -638,9 +690,9 @@ dependencies = [
 
 [[package]]
 name = "web-sys"
-version = "0.3.36"
+version = "0.3.61"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "721c6263e2c66fd44501cc5efbfa2b7dfa775d13e4ea38c46299646ed1f9c70a"
+checksum = "e33b99f4b23ba3eec1a53ac264e35a755f00e966e0065077d6027c0f575b0b97"
 dependencies = [
  "js-sys",
  "wasm-bindgen",
@@ -679,100 +731,66 @@ checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
 [[package]]
 name = "windows-sys"
-version = "0.29.0"
+version = "0.45.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ceb069ac8b2117d36924190469735767f0990833935ab430155e71a44bafe148"
+checksum = "75283be5efb2831d37ea142365f009c02ec203cd29a3ebecbc093d52315b66d0"
 dependencies = [
- "windows_aarch64_msvc 0.29.0",
- "windows_i686_gnu 0.29.0",
- "windows_i686_msvc 0.29.0",
- "windows_x86_64_gnu 0.29.0",
- "windows_x86_64_msvc 0.29.0",
+ "windows-targets",
 ]
 
 [[package]]
-name = "windows-sys"
-version = "0.42.0"
+name = "windows-targets"
+version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a3e1820f08b8513f676f7ab6c1f99ff312fb97b553d30ff4dd86f9f15728aa7"
+checksum = "8e5180c00cd44c9b1c88adb3693291f1cd93605ded80c250a75d472756b4d071"
 dependencies = [
  "windows_aarch64_gnullvm",
- "windows_aarch64_msvc 0.42.0",
- "windows_i686_gnu 0.42.0",
- "windows_i686_msvc 0.42.0",
- "windows_x86_64_gnu 0.42.0",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
  "windows_x86_64_gnullvm",
- "windows_x86_64_msvc 0.42.0",
+ "windows_x86_64_msvc",
 ]
 
 [[package]]
 name = "windows_aarch64_gnullvm"
-version = "0.42.0"
+version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "41d2aa71f6f0cbe00ae5167d90ef3cfe66527d6f613ca78ac8024c3ccab9a19e"
+checksum = "597a5118570b68bc08d8d59125332c54f1ba9d9adeedeef5b99b02ba2b0698f8"
 
 [[package]]
 name = "windows_aarch64_msvc"
-version = "0.29.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3d027175d00b01e0cbeb97d6ab6ebe03b12330a35786cbaca5252b1c4bf5d9b"
-
-[[package]]
-name = "windows_aarch64_msvc"
-version = "0.42.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dd0f252f5a35cac83d6311b2e795981f5ee6e67eb1f9a7f64eb4500fbc4dcdb4"
-
-[[package]]
-name = "windows_i686_gnu"
-version = "0.29.0"
+version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8793f59f7b8e8b01eda1a652b2697d87b93097198ae85f823b969ca5b89bba58"
+checksum = "e08e8864a60f06ef0d0ff4ba04124db8b0fb3be5776a5cd47641e942e58c4d43"
 
 [[package]]
 name = "windows_i686_gnu"
-version = "0.42.0"
+version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fbeae19f6716841636c28d695375df17562ca208b2b7d0dc47635a50ae6c5de7"
+checksum = "c61d927d8da41da96a81f029489353e68739737d3beca43145c8afec9a31a84f"
 
 [[package]]
 name = "windows_i686_msvc"
-version = "0.29.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8602f6c418b67024be2996c512f5f995de3ba417f4c75af68401ab8756796ae4"
-
-[[package]]
-name = "windows_i686_msvc"
-version = "0.42.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "84c12f65daa39dd2babe6e442988fc329d6243fdce47d7d2d155b8d874862246"
-
-[[package]]
-name = "windows_x86_64_gnu"
-version = "0.29.0"
+version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f3d615f419543e0bd7d2b3323af0d86ff19cbc4f816e6453f36a2c2ce889c354"
+checksum = "44d840b6ec649f480a41c8d80f9c65108b92d89345dd94027bfe06ac444d1060"
 
 [[package]]
 name = "windows_x86_64_gnu"
-version = "0.42.0"
+version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bf7b1b21b5362cbc318f686150e5bcea75ecedc74dd157d874d754a2ca44b0ed"
+checksum = "8de912b8b8feb55c064867cf047dda097f92d51efad5b491dfb98f6bbb70cb36"
 
 [[package]]
 name = "windows_x86_64_gnullvm"
-version = "0.42.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09d525d2ba30eeb3297665bd434a54297e4170c7f1a44cad4ef58095b4cd2028"
-
-[[package]]
-name = "windows_x86_64_msvc"
-version = "0.29.0"
+version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "11d95421d9ed3672c280884da53201a5c46b7b2765ca6faf34b0d71cf34a3561"
+checksum = "26d41b46a36d453748aedef1486d5c7a85db22e56aff34643984ea85514e94a3"
 
 [[package]]
 name = "windows_x86_64_msvc"
-version = "0.42.0"
+version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f40009d85759725a34da6d89a94e63d7bdc50a862acf0dbc7c8e488f1edcb6f5"
+checksum = "9aec5da331524158c6d1a4ac0ab1541149c0b9505fde06423b02f5ef0106b9f0"
diff --git a/README.md b/README.md
index e0b081d..10b9e93 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 [![Docs](https://docs.rs/serial_test/badge.svg)](https://docs.rs/serial_test/)
 [![MIT license](https://img.shields.io/crates/l/serial_test.svg)](./LICENSE)
 [![Build Status](https://github.com/palfrey/serial_test/workflows/Continuous%20integration/badge.svg?branch=main)](https://github.com/palfrey/serial_test/actions)
-[![MSRV: 1.51.0](https://flat.badgen.net/badge/MSRV/1.51.0/purple)](https://blog.rust-lang.org/2021/03/25/Rust-1.51.0.html)
+[![MSRV: 1.68.2](https://flat.badgen.net/badge/MSRV/1.68.2/purple)](https://blog.rust-lang.org/2023/03/28/Rust-1.68.2.html)
 
 `serial_test` allows for the creation of serialised Rust tests using the `serial` attribute
 e.g.
@@ -34,7 +34,7 @@ similar properties but based off file locking. Note that there are no guarantees
 `file_serial` as they lock using different methods, and `parallel` doesn't support `file_serial` yet (patches welcomed!).
 
 ## Usage
-We require at least Rust 1.51. Upgrades to this will require at a major version bump.
+The minimum supported Rust version here is 1.68.2. Note this is minimum _supported_, as it may well compile with lower versions, but they're not supported at all. Upgrades to this will require at a major version bump. 1.x supports 1.51 if you need a lower version than that.
 
 Add to your Cargo.toml
 ```toml
@@ -42,11 +42,6 @@ Add to your Cargo.toml
 serial_test = "*"
 ```
 
-plus `use serial_test::serial;` (for Rust 2018) or
-```rust
-#[macro_use]
-extern crate serial_test;
-```
-for earlier versions.
+plus `use serial_test::serial;` in your imports section.
 
 You can then either add `#[serial]` or `#[serial(some_text)]` to tests as required.
diff --git a/serial_test/Cargo.toml b/serial_test/Cargo.toml
index 8e0b6ad..f6743d9 100644
--- a/serial_test/Cargo.toml
+++ b/serial_test/Cargo.toml
@@ -24,7 +24,7 @@ dashmap = { version = "5"}
 
 [dev-dependencies]
 itertools = "0.10"
-tokio = { version = "^1.18", features = ["macros", "rt"] }
+tokio = { version = "^1.27", features = ["macros", "rt"] }
 
 [features]
 default = ["logging", "async"]
diff --git a/serial_test_derive/Cargo.toml b/serial_test_derive/Cargo.toml
index f1f54a9..71af1eb 100644
--- a/serial_test_derive/Cargo.toml
+++ b/serial_test_derive/Cargo.toml
@@ -14,11 +14,11 @@ proc-macro = true
 
 [dependencies]
 quote = "1.0"
-syn = { version="1.0", features=["full"] }
+syn = { version="2", features=["full"] }
 proc-macro2 = "1.0"
 
 [dev-dependencies]
-env_logger = "0.9"
+env_logger = "0.10"
 
 [features]
 async = []
\ No newline at end of file
diff --git a/serial_test_test/Cargo.toml b/serial_test_test/Cargo.toml
index cd4a7da..43491f7 100644
--- a/serial_test_test/Cargo.toml
+++ b/serial_test_test/Cargo.toml
@@ -5,19 +5,19 @@ license = "MIT"
 version = "1.0.0"
 authors = ["Tom Parker-Shemilt <palfrey@tevp.net>"]
 edition = "2018"
-rust-version = "1.51.0"
+rust-version = "1.68.2"
 
 [dependencies]
 serial_test = { path="../serial_test", default_features = false }
 lazy_static = "^1.2"
-env_logger = "^0.9"
+env_logger = "^0.10"
 parking_lot = "^0.12"
 wasm-bindgen-test = {version="0.3.0", optional=true}
-scoped-tls = {version="=1.0.0", optional=true} # Locked down for 1.51 compat
+scoped-tls = {version="1", optional=true}
 
 [dev-dependencies]
-tokio = { version = "^1.18", features = ["macros", "rt"] }
-actix-rt = { version = "^2.7", features = ["macros"] }
+tokio = { version = "^1.27", features = ["macros", "rt"] }
+actix-rt = { version = "^2.8", features = ["macros"] }
 futures-util = {version = "^0.3", default_features = false }
 
 [features]