diff --git a/Cargo.lock b/Cargo.lock
index 3f063de..3b3cb82 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -71,6 +71,12 @@ version = "0.5.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0e4cec68f03f32e44924783795810fa50a7035d8c8ebe78580ad7e6c703fba38"
 
+[[package]]
+name = "bytes"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e0dcbc35f504eb6fc275a6d20e4ebcda18cf50d40ba6fabff8c711fa16cb3b16"
+
 [[package]]
 name = "cc"
 version = "1.0.60"
@@ -343,7 +349,7 @@ version = "0.2.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "993f9e0baeed60001cf565546b0d3dbe6a6ad23f2bd31644a133c641eccf6d53"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "fnv",
  "futures-core",
  "futures-sink",
@@ -351,7 +357,7 @@ dependencies = [
  "http",
  "indexmap",
  "slab",
- "tokio",
+ "tokio 0.2.22",
  "tokio-util",
  "tracing",
 ]
@@ -377,7 +383,7 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "28d569972648b2c512421b5f2a405ad6ac9666547189d0c5477a3f200f3e02f9"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "fnv",
  "itoa",
 ]
@@ -388,7 +394,7 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "13d5ff830006f7646652e057693569bfe0d51760c0085a071769d142a205111b"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "http",
 ]
 
@@ -419,7 +425,7 @@ version = "0.13.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2f3afcfae8af5ad0576a31e768415edb627824129e8e5a29b8bfccb2f234e835"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "futures-channel",
  "futures-core",
  "futures-util",
@@ -431,7 +437,7 @@ dependencies = [
  "itoa",
  "pin-project",
  "socket2",
- "tokio",
+ "tokio 0.2.22",
  "tower-service",
  "tracing",
  "want",
@@ -443,12 +449,12 @@ version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "37743cc83e8ee85eacfce90f2f4102030d9ff0a95244098d781e9bee4a90abb6"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "futures-util",
  "hyper",
  "log",
  "rustls",
- "tokio",
+ "tokio 0.2.22",
  "tokio-rustls",
  "webpki",
 ]
@@ -459,10 +465,10 @@ version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d979acc56dcb5b8dddba3917601745e877576475aa046df3226eabdecef78eed"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "hyper",
  "native-tls",
- "tokio",
+ "tokio 0.2.22",
  "tokio-tls",
 ]
 
@@ -629,26 +635,16 @@ dependencies = [
 ]
 
 [[package]]
-name = "mio-named-pipes"
-version = "0.1.7"
+name = "mio"
+version = "0.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0840c1c50fd55e521b247f949c241c9997709f23bd7f023b9762cd561e935656"
+checksum = "f8f1c83949125de4a582aa2da15ae6324d91cf6a58a70ea407643941ff98f558"
 dependencies = [
- "log",
- "mio",
- "miow 0.3.5",
- "winapi 0.3.9",
-]
-
-[[package]]
-name = "mio-uds"
-version = "0.6.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "afcb699eb26d4332647cc848492bbc15eafb26f08d0304550d5aa1f612e066f0"
-dependencies = [
- "iovec",
  "libc",
- "mio",
+ "log",
+ "miow 0.3.5",
+ "ntapi",
+ "winapi 0.3.9",
 ]
 
 [[package]]
@@ -702,6 +698,15 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "ntapi"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a31937dea023539c72ddae0e3571deadc1414b300483fa7aaec176168cfa9d2"
+dependencies = [
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "num_cpus"
 version = "1.13.0"
@@ -1001,7 +1006,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e9eaa17ac5d7b838b7503d118fa16ad88f440498bf9ffe5424e621f93190d61e"
 dependencies = [
  "base64",
- "bytes",
+ "bytes 0.5.6",
  "encoding_rs",
  "futures-core",
  "futures-util",
@@ -1023,7 +1028,7 @@ dependencies = [
  "serde",
  "serde_json",
  "serde_urlencoded",
- "tokio",
+ "tokio 0.2.22",
  "tokio-rustls",
  "tokio-tls",
  "url",
@@ -1049,7 +1054,7 @@ dependencies = [
  "serde_derive",
  "serde_json",
  "sled",
- "tokio",
+ "tokio 0.3.1",
  "toml",
 ]
 
@@ -1369,17 +1374,33 @@ version = "0.2.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5d34ca54d84bf2b5b4d7d31e901a8464f7b60ac145a284fba25ceb801f2ddccd"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "fnv",
  "futures-core",
  "iovec",
  "lazy_static",
+ "memchr",
+ "mio 0.6.22",
+ "num_cpus",
+ "pin-project-lite",
+ "slab",
+]
+
+[[package]]
+name = "tokio"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1911a203c5c240fd237e23a42e48846475f3d3b1e1dad3f17e6cc17a775b707c"
+dependencies = [
+ "bytes 0.6.0",
+ "fnv",
+ "futures-core",
+ "lazy_static",
  "libc",
  "memchr",
- "mio",
- "mio-named-pipes",
- "mio-uds",
+ "mio 0.7.4",
  "num_cpus",
+ "parking_lot",
  "pin-project-lite",
  "signal-hook-registry",
  "slab",
@@ -1389,9 +1410,9 @@ dependencies = [
 
 [[package]]
 name = "tokio-macros"
-version = "0.2.5"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0c3acc6aa564495a0f2e1d59fab677cd7f81a19994cfc7f3ad0e64301560389"
+checksum = "d48caa7b66c7a6ec943edf78d21a594fbeb24e536c781da67d5c32edec54103f"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1406,7 +1427,7 @@ checksum = "e12831b255bcfa39dc0436b01e19fea231a37db570686c06ee72c423479f889a"
 dependencies = [
  "futures-core",
  "rustls",
- "tokio",
+ "tokio 0.2.22",
  "webpki",
 ]
 
@@ -1417,7 +1438,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9a70f4fcd7b3b24fb194f837560168208f669ca8cb70d0c4b862944452396343"
 dependencies = [
  "native-tls",
- "tokio",
+ "tokio 0.2.22",
 ]
 
 [[package]]
@@ -1426,12 +1447,12 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "be8242891f2b6cbef26a2d7e8605133c2c554cd35b3e4948ea892d6d68436499"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "futures-core",
  "futures-sink",
  "log",
  "pin-project-lite",
- "tokio",
+ "tokio 0.2.22",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 17dc6a5..88e3f44 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,7 +10,7 @@ toml = "0.5.7"
 serde_derive = "1.0.112"
 serde = "1.0.117"
 reqwest = { version = "0.10", default-features = false, features = ["json", "rustls-tls"] }
-tokio = { version = "0.2", features = ["full"] }
+tokio = { version = "0.3", features = ["full"] }
 serde_json = "1.0.59"
 log = "0.4"
 pretty_env_logger = "0.4.0"