diff --git a/Cargo.lock b/Cargo.lock
index 56239f59258e..3ea85d0352f6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -184,7 +184,7 @@ version = "0.3.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b72c1f1154e234325b50864a349b9c8e56939e266a4c307c0f159812df2f9537"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "flate2",
  "futures-core",
  "memchr",
@@ -249,7 +249,7 @@ dependencies = [
  "backup-service",
  "bcs",
  "byteorder",
- "bytes",
+ "bytes 1.2.1",
  "diem-config",
  "diem-crypto",
  "diem-infallible",
@@ -290,7 +290,7 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "bcs",
- "bytes",
+ "bytes 1.2.1",
  "diem-config",
  "diem-crypto",
  "diem-logger",
@@ -583,6 +583,12 @@ name = "bytes"
 version = "0.5.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0e4cec68f03f32e44924783795810fa50a7035d8c8ebe78580ad7e6c703fba38"
+
+[[package]]
+name = "bytes"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec8a7b6a70fde80372154c65702f00a0f56f3e1c36abbc6c440484be248856db"
 dependencies = [
  "serde",
 ]
@@ -912,7 +918,7 @@ dependencies = [
  "async-trait",
  "bcs",
  "byteorder",
- "bytes",
+ "bytes 1.2.1",
  "channel",
  "consensus-types",
  "diem-config",
@@ -1278,7 +1284,7 @@ name = "debug-interface"
 version = "0.1.0"
 dependencies = [
  "anyhow",
- "bytes",
+ "bytes 1.2.1",
  "diem-logger",
  "diem-metrics",
  "diem-workspace-hack",
@@ -1358,7 +1364,7 @@ dependencies = [
  "bcs",
  "bitvec",
  "byteorder",
- "bytes",
+ "bytes 1.2.1",
  "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)",
@@ -2170,7 +2176,7 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "bcs",
- "bytes",
+ "bytes 1.2.1",
  "chrono",
  "diem-crypto",
  "diem-crypto-derive",
@@ -2283,7 +2289,7 @@ name = "diem-workspace-hack"
 version = "0.1.0"
 dependencies = [
  "byteorder",
- "bytes",
+ "bytes 1.2.1",
  "cc",
  "chrono",
  "itertools 0.9.0",
@@ -3216,7 +3222,7 @@ 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",
@@ -3264,7 +3270,7 @@ checksum = "ed18eb2459bf1a09ad2d6b1547840c3e5e62882fa09b9a6a20b1de8e3228848f"
 dependencies = [
  "base64 0.12.3",
  "bitflags",
- "bytes",
+ "bytes 0.5.6",
  "headers-core",
  "http",
  "mime",
@@ -3352,7 +3358,7 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "84129d298a6d57d246960ff8eb831ca4af3f96d29e2e28848dae275408658e26"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "fnv",
  "itoa",
 ]
@@ -3363,7 +3369,7 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "13d5ff830006f7646652e057693569bfe0d51760c0085a071769d142a205111b"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "http",
 ]
 
@@ -3400,7 +3406,7 @@ 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",
@@ -3424,7 +3430,7 @@ 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 0.2.22",
@@ -3491,7 +3497,7 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "19a8a95243d5a0398cae618ec29477c6e3cb631152be5c19481f80bc71559754"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
 ]
 
 [[package]]
@@ -3668,7 +3674,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dcaa8ea719de24e21fe6fddb2ea996ca4e312d467c119f827551c4768d97dc5c"
 dependencies = [
  "base64 0.13.0",
- "bytes",
+ "bytes 0.5.6",
  "chrono",
  "serde",
  "serde-value",
@@ -3699,7 +3705,7 @@ checksum = "6585da8efec1a3b5df0fb12b357e2f3921cd7436a6d10f1ea06377d4cbd85032"
 dependencies = [
  "Inflector",
  "base64 0.12.3",
- "bytes",
+ "bytes 0.5.6",
  "chrono",
  "dirs-next",
  "either",
@@ -3924,7 +3930,7 @@ dependencies = [
 name = "memsocket"
 version = "0.1.0"
 dependencies = [
- "bytes",
+ "bytes 1.2.1",
  "diem-infallible",
  "diem-workspace-hack",
  "futures 0.3.8",
@@ -4398,7 +4404,7 @@ dependencies = [
 name = "netcore"
 version = "0.1.0"
 dependencies = [
- "bytes",
+ "bytes 1.2.1",
  "diem-logger",
  "diem-network-address",
  "diem-types",
@@ -4418,7 +4424,7 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "bcs",
- "bytes",
+ "bytes 1.2.1",
  "channel",
  "criterion",
  "diem-bitvec",
@@ -5126,7 +5132,7 @@ version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ce49aefe0a6144a45de32927c77bd2859a5f7677b55f220ae5b744e87389c212"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "prost-derive",
 ]
 
@@ -5136,7 +5142,7 @@ 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",
@@ -5167,7 +5173,7 @@ version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1834f67c0697c001304b75be76f67add9c89742eda3a085ad8ee0bb38c3417aa"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "prost",
 ]
 
@@ -5548,7 +5554,7 @@ checksum = "0718f81a8e14c4dbb3b34cf23dc6aaf9ab8a0dfec160c534b3dbca1aaa21f47c"
 dependencies = [
  "async-compression",
  "base64 0.13.0",
- "bytes",
+ "bytes 0.5.6",
  "encoding_rs",
  "futures-core",
  "futures-util",
@@ -5625,7 +5631,7 @@ 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",
@@ -5640,7 +5646,7 @@ checksum = "e977941ee0658df96fca7291ecc6fc9a754600b21ad84b959eb1dbbc9d5abcc7"
 dependencies = [
  "async-trait",
  "base64 0.12.3",
- "bytes",
+ "bytes 0.5.6",
  "crc32fast",
  "futures 0.3.8",
  "http",
@@ -5687,7 +5693,7 @@ 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",
@@ -5700,7 +5706,7 @@ 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",
@@ -5725,7 +5731,7 @@ 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",
@@ -6405,7 +6411,7 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "bcs",
- "bytes",
+ "bytes 1.2.1",
  "channel",
  "compiled-stdlib",
  "diem-config",
@@ -6979,7 +6985,7 @@ 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",
@@ -7047,7 +7053,7 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7edc5a2b13a713b9134debc9aa1265b0a1ccf6a81fa05af2ba26e4aee56cdf1a"
 dependencies = [
- "bytes",
+ "bytes 0.5.6",
  "futures-core",
  "tokio 0.3.6",
 ]
@@ -7093,7 +7099,7 @@ 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",
@@ -7221,7 +7227,7 @@ checksum = "f0308d80d86700c5878b9ef6321f020f29b1bb9d5ff3cab25e75e23f3a492a23"
 dependencies = [
  "base64 0.12.3",
  "byteorder",
- "bytes",
+ "bytes 0.5.6",
  "http",
  "httparse",
  "input_buffer",
@@ -7496,7 +7502,7 @@ 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",
diff --git a/common/debug-interface/Cargo.toml b/common/debug-interface/Cargo.toml
index 58f70a121f92..ebc17f79ac84 100644
--- a/common/debug-interface/Cargo.toml
+++ b/common/debug-interface/Cargo.toml
@@ -11,7 +11,7 @@ edition = "2018"
 
 [dependencies]
 anyhow = "1.0.36"
-bytes = "0.5.6"
+bytes = "1.2.1"
 tokio = { version = "0.2.22", features = ["full"] }
 reqwest = { version = "0.10.10", features = ["blocking", "json"], default_features = false }
 warp = "0.2.5"
diff --git a/common/workspace-hack/Cargo.toml b/common/workspace-hack/Cargo.toml
index c29744c7aabf..2db702a1287e 100644
--- a/common/workspace-hack/Cargo.toml
+++ b/common/workspace-hack/Cargo.toml
@@ -11,7 +11,7 @@ edition = "2018"
 
 [dependencies]
 byteorder = { version = "1.3.4", features = ["i128", "std"] }
-bytes = { version = "0.5.6", features = ["serde", "std"] }
+bytes = { version = "1.2.1", features = ["serde", "std"] }
 cc = { version = "1.0.66", features = ["jobserver", "parallel"] }
 chrono = "0.4.19"
 itertools = "0.9.0"
diff --git a/consensus/Cargo.toml b/consensus/Cargo.toml
index 8e16bb239c1a..3aa244cb45e6 100644
--- a/consensus/Cargo.toml
+++ b/consensus/Cargo.toml
@@ -13,7 +13,7 @@ edition = "2018"
 anyhow = "1.0.36"
 async-trait = "0.1.42"
 byteorder = { version = "1.3.4", default-features = false }
-bytes = "0.5.6"
+bytes = "1.2.1"
 fail = "0.4.0"
 futures = "0.3.8"
 itertools = { version = "0.9.0", default-features = false }
diff --git a/crypto/crypto/Cargo.toml b/crypto/crypto/Cargo.toml
index df29d1bde45c..90acbfa70a38 100644
--- a/crypto/crypto/Cargo.toml
+++ b/crypto/crypto/Cargo.toml
@@ -11,7 +11,7 @@ edition = "2018"
 
 [dependencies]
 anyhow = "1.0.36"
-bytes = "0.5.6"
+bytes = "1.2.1"
 vanilla-curve25519-dalek = { version = "3", package = 'curve25519-dalek', default-features = false, features = ["std"], optional = true }
 curve25519-dalek = { git = "https://github.com/novifinancial/curve25519-dalek.git", branch = "fiat3", version = "3", default-features = false, features = ["std", "fiat_u64_backend"], optional = true }
 digest = "0.9.0"
diff --git a/network/Cargo.toml b/network/Cargo.toml
index 29b6e8894291..1fef56b8c206 100644
--- a/network/Cargo.toml
+++ b/network/Cargo.toml
@@ -11,7 +11,7 @@ edition = "2018"
 
 [dependencies]
 anyhow = "1.0.36"
-bytes = { version = "0.5.6", features = ["serde"] }
+bytes = { version = "1.2.1", features = ["serde"] }
 futures = "0.3.8"
 futures-util = "0.3.8"
 hex = "0.4.2"
diff --git a/network/memsocket/Cargo.toml b/network/memsocket/Cargo.toml
index 0fae0cb46e29..fcb50aa6e2ff 100644
--- a/network/memsocket/Cargo.toml
+++ b/network/memsocket/Cargo.toml
@@ -11,7 +11,7 @@ publish = false
 
 [dependencies]
 futures = "0.3.8"
-bytes = "0.5.6"
+bytes = "1.2.1"
 once_cell = "1.4.1"
 diem-infallible = { path = "../../common/infallible", version = "0.1.0" }
 diem-workspace-hack = { path = "../../common/workspace-hack", version = "0.1.0" }
diff --git a/network/netcore/Cargo.toml b/network/netcore/Cargo.toml
index cc318f805f81..6eedd4dbaeac 100644
--- a/network/netcore/Cargo.toml
+++ b/network/netcore/Cargo.toml
@@ -10,7 +10,7 @@ publish = false
 edition = "2018"
 
 [dependencies]
-bytes = "0.5.6"
+bytes = "1.2.1"
 futures = "0.3.8"
 pin-project = "1.0.2"
 serde = { version = "1.0.117", default-features = false }
diff --git a/state-synchronizer/Cargo.toml b/state-synchronizer/Cargo.toml
index 0f7b0b070c2f..f2e00011802a 100644
--- a/state-synchronizer/Cargo.toml
+++ b/state-synchronizer/Cargo.toml
@@ -43,7 +43,7 @@ bcs = "0.1.2"
 vm-genesis = { path = "../language/tools/vm-genesis", version = "0.1.0", optional = true }
 
 [dev-dependencies]
-bytes = "0.5.6"
+bytes = "1.2.1"
 proptest = "0.10.1"
 
 channel = { path = "../common/channel", version = "0.1.0" }
diff --git a/storage/backup/backup-cli/Cargo.toml b/storage/backup/backup-cli/Cargo.toml
index 8052425d1c83..885072726a9a 100644
--- a/storage/backup/backup-cli/Cargo.toml
+++ b/storage/backup/backup-cli/Cargo.toml
@@ -12,7 +12,7 @@ edition = "2018"
 anyhow = "1.0.36"
 async-trait = "0.1.42"
 byteorder = "1.3.4"
-bytes = "0.5.6"
+bytes = "1.2.1"
 futures = "0.3.8"
 hex = "0.4.2"
 itertools = "0.9.0"
diff --git a/storage/backup/backup-service/Cargo.toml b/storage/backup/backup-service/Cargo.toml
index 806fa96ff832..784c6ab0d058 100644
--- a/storage/backup/backup-service/Cargo.toml
+++ b/storage/backup/backup-service/Cargo.toml
@@ -10,7 +10,7 @@ edition = "2018"
 
 [dependencies]
 anyhow = "1.0.36"
-bytes = "0.5.6"
+bytes = "1.2.1"
 futures = "0.3.8"
 hyper = "0.13.9"
 once_cell = "1.4.1"
diff --git a/types/Cargo.toml b/types/Cargo.toml
index a57729c27d59..2a3cd137cedf 100644
--- a/types/Cargo.toml
+++ b/types/Cargo.toml
@@ -11,7 +11,7 @@ edition = "2018"
 
 [dependencies]
 anyhow = "1.0.36"
-bytes = "0.5.6"
+bytes = "1.2.1"
 chrono = { version = "0.4.19", default-features = false, features = ["clock"] }
 hex = "0.4.2"
 itertools = { version = "0.9.0", default-features = false }