diff --git a/Cargo.lock b/Cargo.lock
index ee0de5c7e5c8..d598d820885f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -178,13 +178,34 @@ version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fb1ff21a63d3262af46b9f33a826a8d134e2d0d9b2179c86034948b732ea8b2a"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "flate2",
  "futures-core",
  "memchr",
  "pin-project-lite 0.1.11",
 ]
 
+[[package]]
+name = "async-stream"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3670df70cbc01729f901f94c887814b3c68db038aad1329a418bae178bc5295c"
+dependencies = [
+ "async-stream-impl",
+ "futures-core",
+]
+
+[[package]]
+name = "async-stream-impl"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a3548b8efc9f8e8a5a0a2808c5bd8451a9031b9e5b879a79590304ae928b0a70"
+dependencies = [
+ "proc-macro2 1.0.24",
+ "quote 1.0.7",
+ "syn 1.0.53",
+]
+
 [[package]]
 name = "async-trait"
 version = "0.1.42"
@@ -243,7 +264,7 @@ dependencies = [
  "backup-service",
  "bcs",
  "byteorder",
- "bytes",
+ "bytes 0.5.6",
  "diem-config",
  "diem-crypto",
  "diem-infallible",
@@ -273,8 +294,8 @@ dependencies = [
  "serde_json",
  "storage-interface",
  "structopt 0.3.21",
- "tokio",
- "tokio-util",
+ "tokio 0.2.22",
+ "tokio-util 0.6.0",
  "toml",
 ]
 
@@ -284,7 +305,7 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "bcs",
- "bytes",
+ "bytes 0.5.6",
  "diem-config",
  "diem-crypto",
  "diem-logger",
@@ -299,7 +320,7 @@ dependencies = [
  "reqwest",
  "serde",
  "storage-interface",
- "tokio",
+ "tokio 0.2.22",
  "warp",
 ]
 
@@ -460,7 +481,7 @@ version = "0.1.0"
 dependencies = [
  "diem-workspace-hack",
  "futures 0.3.8",
- "tokio",
+ "tokio 0.2.22",
 ]
 
 [[package]]
@@ -581,6 +602,12 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "bytes"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ad1f8e949d755f9d79112b5bb46938e0ef9d3804a0b16dfab13aafcaa5f0fa72"
+
 [[package]]
 name = "c_linked_list"
 version = "1.1.1"
@@ -657,7 +684,7 @@ dependencies = [
  "diem-types",
  "diem-workspace-hack",
  "futures 0.3.8",
- "tokio",
+ "tokio 0.2.22",
 ]
 
 [[package]]
@@ -747,7 +774,7 @@ dependencies = [
  "rustyline",
  "serde",
  "structopt 0.3.21",
- "tokio",
+ "tokio 0.2.22",
  "transaction-builder",
  "walkdir",
 ]
@@ -815,7 +842,7 @@ dependencies = [
  "state-synchronizer",
  "structopt 0.3.21",
  "termion",
- "tokio",
+ "tokio 0.2.22",
  "toml",
  "transaction-builder",
 ]
@@ -906,7 +933,7 @@ dependencies = [
  "async-trait",
  "bcs",
  "byteorder",
- "bytes",
+ "bytes 0.5.6",
  "channel",
  "consensus-types",
  "diem-config",
@@ -945,7 +972,7 @@ dependencies = [
  "tempfile",
  "termion",
  "thiserror",
- "tokio",
+ "tokio 0.2.22",
  "vm-genesis",
  "vm-validator",
 ]
@@ -1276,12 +1303,12 @@ name = "debug-interface"
 version = "0.1.0"
 dependencies = [
  "anyhow",
- "bytes",
+ "bytes 0.5.6",
  "diem-logger",
  "diem-metrics",
  "diem-workspace-hack",
  "reqwest",
- "tokio",
+ "tokio 0.2.22",
  "warp",
 ]
 
@@ -1356,7 +1383,7 @@ dependencies = [
  "bcs",
  "bitvec",
  "byteorder",
- "bytes",
+ "bytes 0.5.6",
  "criterion",
  "curve25519-dalek 3.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "curve25519-dalek 3.0.0 (git+https://github.com/novifinancial/curve25519-dalek.git?branch=fiat3)",
@@ -1446,7 +1473,7 @@ dependencies = [
  "hex",
  "reqwest",
  "structopt 0.3.21",
- "tokio",
+ "tokio 0.2.22",
 ]
 
 [[package]]
@@ -1471,7 +1498,7 @@ dependencies = [
  "serde_json",
  "structopt 0.3.21",
  "tempfile",
- "tokio",
+ "tokio 0.2.22",
  "transaction-builder-generated",
  "warp",
 ]
@@ -1648,7 +1675,7 @@ dependencies = [
  "serde",
  "serde_json",
  "storage-interface",
- "tokio",
+ "tokio 0.2.22",
  "transaction-builder-generated",
  "vm-genesis",
  "vm-validator",
@@ -1673,7 +1700,7 @@ dependencies = [
  "reqwest",
  "serde",
  "serde_json",
- "tokio",
+ "tokio 0.2.22",
  "warp",
 ]
 
@@ -1726,7 +1753,7 @@ dependencies = [
  "serde",
  "storage-interface",
  "thiserror",
- "tokio",
+ "tokio 0.2.22",
  "transaction-builder-generated",
  "vm-validator",
 ]
@@ -1816,7 +1843,7 @@ dependencies = [
  "storage-interface",
  "storage-service",
  "subscription-service",
- "tokio",
+ "tokio 0.2.22",
  "vm-validator",
 ]
 
@@ -1835,7 +1862,7 @@ dependencies = [
  "prometheus",
  "rusty-fork",
  "serde_json",
- "tokio",
+ "tokio 0.2.22",
 ]
 
 [[package]]
@@ -1925,7 +1952,7 @@ dependencies = [
  "storage-service",
  "structopt 0.3.21",
  "subscription-service",
- "tokio",
+ "tokio 0.2.22",
 ]
 
 [[package]]
@@ -1971,7 +1998,7 @@ version = "0.1.0"
 dependencies = [
  "diem-logger",
  "diem-workspace-hack",
- "tokio",
+ "tokio 0.2.22",
 ]
 
 [[package]]
@@ -1995,7 +2022,7 @@ dependencies = [
  "serde_json",
  "storage-interface",
  "thiserror",
- "tokio",
+ "tokio 0.2.22",
  "ureq",
  "vm-validator",
 ]
@@ -2131,7 +2158,7 @@ dependencies = [
  "serde",
  "serde_json",
  "structopt 0.3.21",
- "tokio",
+ "tokio 0.2.22",
 ]
 
 [[package]]
@@ -2166,7 +2193,7 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "bcs",
- "bytes",
+ "bytes 0.5.6",
  "chrono",
  "diem-crypto",
  "diem-crypto-derive",
@@ -2279,7 +2306,7 @@ name = "diem-workspace-hack"
 version = "0.1.0"
 dependencies = [
  "byteorder",
- "bytes",
+ "bytes 0.5.6",
  "cc",
  "chrono",
  "itertools 0.9.0",
@@ -3200,7 +3227,7 @@ version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5e4728fd124914ad25e99e3d15a9361a879f6620f63cb56bbb08f95abb97a535"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "fnv",
  "futures-core",
  "futures-sink",
@@ -3208,8 +3235,8 @@ dependencies = [
  "http",
  "indexmap",
  "slab",
- "tokio",
- "tokio-util",
+ "tokio 0.2.22",
+ "tokio-util 0.3.1",
  "tracing",
  "tracing-futures",
 ]
@@ -3248,7 +3275,7 @@ checksum = "ed18eb2459bf1a09ad2d6b1547840c3e5e62882fa09b9a6a20b1de8e3228848f"
 dependencies = [
  "base64 0.12.3",
  "bitflags",
- "bytes",
+ "bytes 0.5.6",
  "headers-core",
  "http",
  "mime",
@@ -3336,7 +3363,7 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "28d569972648b2c512421b5f2a405ad6ac9666547189d0c5477a3f200f3e02f9"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "fnv",
  "itoa",
 ]
@@ -3347,7 +3374,7 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "13d5ff830006f7646652e057693569bfe0d51760c0085a071769d142a205111b"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "http",
 ]
 
@@ -3384,7 +3411,7 @@ version = "0.13.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f6ad767baac13b44d4529fcf58ba2cd0995e36e7b435bc5b039de6f47e880dbf"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "futures-channel",
  "futures-core",
  "futures-util",
@@ -3396,7 +3423,7 @@ dependencies = [
  "itoa",
  "pin-project 1.0.2",
  "socket2",
- "tokio",
+ "tokio 0.2.22",
  "tower-service",
  "tracing",
  "want",
@@ -3408,10 +3435,10 @@ 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",
 ]
 
@@ -3475,7 +3502,7 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "19a8a95243d5a0398cae618ec29477c6e3cb631152be5c19481f80bc71559754"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
 ]
 
 [[package]]
@@ -3639,7 +3666,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "57f95fd36c08ce592e67400a0f1a66f432196997d5a7e9a97e8743c33d8a9312"
 dependencies = [
  "base64 0.12.3",
- "bytes",
+ "bytes 0.5.6",
  "chrono",
  "serde",
  "serde-value",
@@ -3670,7 +3697,7 @@ checksum = "f4f52dbe2c0e7ca54e43f1bc7b77b916750e63d7694e5a18c09b11307acc6b9d"
 dependencies = [
  "Inflector",
  "base64 0.12.3",
- "bytes",
+ "bytes 0.5.6",
  "chrono",
  "dirs 3.0.1",
  "either",
@@ -3688,7 +3715,7 @@ dependencies = [
  "static_assertions",
  "thiserror",
  "time 0.2.23",
- "tokio",
+ "tokio 0.2.22",
  "url",
 ]
 
@@ -3894,7 +3921,7 @@ dependencies = [
 name = "memsocket"
 version = "0.1.0"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "diem-infallible",
  "diem-workspace-hack",
  "futures 0.3.8",
@@ -4208,7 +4235,7 @@ dependencies = [
  "shell-words",
  "simplelog",
  "spec-lang",
- "tokio",
+ "tokio 0.2.22",
  "toml",
  "vm",
 ]
@@ -4366,7 +4393,7 @@ dependencies = [
 name = "netcore"
 version = "0.1.0"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "diem-logger",
  "diem-network-address",
  "diem-types",
@@ -4375,7 +4402,7 @@ dependencies = [
  "memsocket",
  "pin-project 1.0.2",
  "serde",
- "tokio",
+ "tokio 0.2.22",
  "url",
 ]
 
@@ -4385,7 +4412,7 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "bcs",
- "bytes",
+ "bytes 0.5.6",
  "channel",
  "criterion",
  "diem-bitvec",
@@ -4418,9 +4445,9 @@ dependencies = [
  "short-hex-str",
  "socket-bench-server",
  "thiserror",
- "tokio",
+ "tokio 0.2.22",
  "tokio-retry",
- "tokio-util",
+ "tokio-util 0.6.0",
 ]
 
 [[package]]
@@ -4446,7 +4473,7 @@ dependencies = [
  "rand 0.7.3",
  "serde",
  "subscription-service",
- "tokio",
+ "tokio 0.2.22",
  "tokio-retry",
 ]
 
@@ -4470,7 +4497,7 @@ dependencies = [
  "network",
  "once_cell",
  "subscription-service",
- "tokio",
+ "tokio 0.2.22",
 ]
 
 [[package]]
@@ -5093,7 +5120,7 @@ version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ce49aefe0a6144a45de32927c77bd2859a5f7677b55f220ae5b744e87389c212"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "prost-derive",
 ]
 
@@ -5103,7 +5130,7 @@ version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "02b10678c913ecbd69350e8535c3aef91a8676c0773fc1d7b95cdd196d7f2f26"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "heck",
  "itertools 0.8.2",
  "log",
@@ -5134,7 +5161,7 @@ version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1834f67c0697c001304b75be76f67add9c89742eda3a085ad8ee0bb38c3417aa"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "prost",
 ]
 
@@ -5507,7 +5534,7 @@ checksum = "fb15d6255c792356a0f578d8a645c677904dc02e862bebe2ecc18e0c01b9a0ce"
 dependencies = [
  "async-compression",
  "base64 0.13.0",
- "bytes",
+ "bytes 0.5.6",
  "encoding_rs",
  "futures-core",
  "futures-util",
@@ -5527,7 +5554,7 @@ dependencies = [
  "serde",
  "serde_json",
  "serde_urlencoded 0.7.0",
- "tokio",
+ "tokio 0.2.22",
  "tokio-tls",
  "url",
  "wasm-bindgen",
@@ -5585,7 +5612,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7af1c42491edaa3b2582c6f3a0221f5ef4ed7a02c71cf1f614bb12877e1d44dd"
 dependencies = [
  "async-trait",
- "bytes",
+ "bytes 0.5.6",
  "futures 0.3.8",
  "rusoto_core",
  "serde_urlencoded 0.6.1",
@@ -5600,7 +5627,7 @@ checksum = "e977941ee0658df96fca7291ecc6fc9a754600b21ad84b959eb1dbbc9d5abcc7"
 dependencies = [
  "async-trait",
  "base64 0.12.3",
- "bytes",
+ "bytes 0.5.6",
  "crc32fast",
  "futures 0.3.8",
  "http",
@@ -5616,7 +5643,7 @@ dependencies = [
  "rustc_version",
  "serde",
  "serde_json",
- "tokio",
+ "tokio 0.2.22",
  "xml-rs",
 ]
 
@@ -5636,7 +5663,7 @@ dependencies = [
  "serde",
  "serde_json",
  "shlex",
- "tokio",
+ "tokio 0.2.22",
  "zeroize",
 ]
 
@@ -5647,7 +5674,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1146e37a7c1df56471ea67825fe09bbbd37984b5f6e201d8b2e0be4ee15643d8"
 dependencies = [
  "async-trait",
- "bytes",
+ "bytes 0.5.6",
  "futures 0.3.8",
  "rusoto_core",
  "xml-rs",
@@ -5660,7 +5687,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "97a740a88dde8ded81b6f2cff9cd5e054a5a2e38a38397260f7acdd2c85d17dd"
 dependencies = [
  "base64 0.12.3",
- "bytes",
+ "bytes 0.5.6",
  "futures 0.3.8",
  "hex",
  "hmac 0.8.1",
@@ -5675,7 +5702,7 @@ dependencies = [
  "serde",
  "sha2",
  "time 0.2.23",
- "tokio",
+ "tokio 0.2.22",
 ]
 
 [[package]]
@@ -5685,7 +5712,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3815b8c0fc1c50caf9e87603f23daadfedb18d854de287b361c69f68dc9d49e0"
 dependencies = [
  "async-trait",
- "bytes",
+ "bytes 0.5.6",
  "chrono",
  "futures 0.3.8",
  "rusoto_core",
@@ -6277,7 +6304,7 @@ dependencies = [
  "rust_decimal",
  "rusty-fork",
  "statistical",
- "tokio",
+ "tokio 0.2.22",
  "transaction-builder",
 ]
 
@@ -6297,8 +6324,8 @@ dependencies = [
  "network",
  "network-builder",
  "rand 0.7.3",
- "tokio",
- "tokio-util",
+ "tokio 0.2.22",
+ "tokio-util 0.6.0",
 ]
 
 [[package]]
@@ -6359,7 +6386,7 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "bcs",
- "bytes",
+ "bytes 0.5.6",
  "channel",
  "compiled-stdlib",
  "diem-config",
@@ -6393,7 +6420,7 @@ dependencies = [
  "storage-interface",
  "storage-service",
  "subscription-service",
- "tokio",
+ "tokio 0.2.22",
  "transaction-builder",
  "vm-genesis",
 ]
@@ -6546,7 +6573,7 @@ dependencies = [
  "rand 0.7.3",
  "storage-client",
  "storage-interface",
- "tokio",
+ "tokio 0.2.22",
 ]
 
 [[package]]
@@ -6909,7 +6936,7 @@ 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",
@@ -6927,6 +6954,16 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "tokio"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9f4bfdcbd00fa893ac0549b38aa27080636a0104b0d0c38475a99439405e1df8"
+dependencies = [
+ "autocfg 1.0.1",
+ "pin-project-lite 0.2.0",
+]
+
 [[package]]
 name = "tokio-executor"
 version = "0.1.10"
@@ -6959,6 +6996,18 @@ dependencies = [
  "tokio-timer",
 ]
 
+[[package]]
+name = "tokio-stream"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f3be913b74b13210c8fe04b17ab833f5a124f45b93d0f99f59fff621f64392a"
+dependencies = [
+ "async-stream",
+ "futures-core",
+ "pin-project-lite 0.2.0",
+ "tokio 1.0.0",
+]
+
 [[package]]
 name = "tokio-timer"
 version = "0.2.13"
@@ -6978,7 +7027,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9a70f4fcd7b3b24fb194f837560168208f669ca8cb70d0c4b862944452396343"
 dependencies = [
  "native-tls",
- "tokio",
+ "tokio 0.2.22",
 ]
 
 [[package]]
@@ -6990,7 +7039,7 @@ dependencies = [
  "futures-util",
  "log",
  "pin-project 0.4.27",
- "tokio",
+ "tokio 0.2.22",
  "tungstenite",
 ]
 
@@ -7000,13 +7049,28 @@ 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-io",
  "futures-sink",
  "log",
  "pin-project-lite 0.1.11",
- "tokio",
+ "tokio 0.2.22",
+]
+
+[[package]]
+name = "tokio-util"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "36135b7e7da911f5f8b9331209f7fab4cc13498f3fff52f72a710c78187e3148"
+dependencies = [
+ "bytes 1.0.0",
+ "futures-core",
+ "futures-io",
+ "futures-sink",
+ "log",
+ "pin-project-lite 0.2.0",
+ "tokio 1.0.0",
+ "tokio-stream",
 ]
 
 [[package]]
@@ -7128,7 +7192,7 @@ checksum = "f0308d80d86700c5878b9ef6321f020f29b1bb9d5ff3cab25e75e23f3a492a23"
 dependencies = [
  "base64 0.12.3",
  "byteorder",
- "bytes",
+ "bytes 0.5.6",
  "http",
  "httparse",
  "input_buffer",
@@ -7403,7 +7467,7 @@ version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f41be6df54c97904af01aa23e613d4521eed7ab23537cede692d4058f6449407"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "futures 0.3.8",
  "headers",
  "http",
@@ -7417,7 +7481,7 @@ dependencies = [
  "serde",
  "serde_json",
  "serde_urlencoded 0.6.1",
- "tokio",
+ "tokio 0.2.22",
  "tokio-tungstenite",
  "tower-service",
  "tracing",
diff --git a/network/Cargo.toml b/network/Cargo.toml
index 1e8922225ce8..5f8176de71aa 100644
--- a/network/Cargo.toml
+++ b/network/Cargo.toml
@@ -26,7 +26,7 @@ serde_bytes = "0.11.5"
 thiserror = "1.0.22"
 tokio = { version = "0.2.22", features = ["full"] }
 tokio-retry = "0.2.0"
-tokio-util = { version = "0.3.1", features = ["codec"] }
+tokio-util = { version = "0.6.0", features = ["codec"] }
 
 bitvec = { path = "../common/bitvec", version = "0.1.0", package = "diem-bitvec" }
 channel = { path = "../common/channel", version = "0.1.0" }
diff --git a/network/socket-bench-server/Cargo.toml b/network/socket-bench-server/Cargo.toml
index 21e30f8edc60..ecb6cdeb8a47 100644
--- a/network/socket-bench-server/Cargo.toml
+++ b/network/socket-bench-server/Cargo.toml
@@ -12,7 +12,7 @@ edition = "2018"
 [dependencies]
 futures = "0.3.8"
 tokio = { version = "0.2.22", features = ["full"] }
-tokio-util = { version = "0.3.1", features = ["codec"] }
+tokio-util = { version = "0.6.0", features = ["codec"] }
 
 diem-crypto = { path = "../../crypto/crypto" }
 diem-config = { path = "../../config" }
diff --git a/storage/backup/backup-cli/Cargo.toml b/storage/backup/backup-cli/Cargo.toml
index 0881f975ca99..10ade272ebd3 100644
--- a/storage/backup/backup-cli/Cargo.toml
+++ b/storage/backup/backup-cli/Cargo.toml
@@ -27,7 +27,7 @@ serde_json = "1.0.60"
 structopt = "0.3.21"
 toml = "0.5.7"
 tokio = { version = "0.2.22", features = ["full"] }
-tokio-util = { version = "0.3.1", features = ["compat"] }
+tokio-util = { version = "0.6.0", features = ["compat"] }
 
 executor = { path = "../../../execution/executor", version = "0.1.0" }
 executor-test-helpers = { path = "../../../execution/executor-test-helpers", version = "0.1.0", optional = true }