diff --git a/Cargo.lock b/Cargo.lock
index 1d19399..c3f6567 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -273,9 +273,9 @@ checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
 
 [[package]]
 name = "bytes"
-version = "1.2.1"
+version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec8a7b6a70fde80372154c65702f00a0f56f3e1c36abbc6c440484be248856db"
+checksum = "89b2fd2a0dcf38d7971e2194b6b6eebab45ae01067456a7fd93d5547a61b70be"
 dependencies = [
  "serde",
 ]
diff --git a/mvclient/Cargo.toml b/mvclient/Cargo.toml
index 68211e7..89703d3 100644
--- a/mvclient/Cargo.toml
+++ b/mvclient/Cargo.toml
@@ -20,7 +20,7 @@ url = "2.3.1"
 hex = "0.4.3"
 serde = { version = "1", features = ["derive"] }
 rmp-serde = "1.1.0"
-bytes = { version = "1.2.1", features = ["serde"] }
+bytes = { version = "1.4.0", features = ["serde"] }
 tokio-util = { version = "0.7.3", features = ["io", "codec"] }
 futures = "0.3"
 serde_json = "1"
diff --git a/mvfs/Cargo.toml b/mvfs/Cargo.toml
index 3f14fc8..1f129e5 100644
--- a/mvfs/Cargo.toml
+++ b/mvfs/Cargo.toml
@@ -21,4 +21,4 @@ serde_json = "1"
 lazy_static = "1.4.0"
 reqwest = { version = "0.11.11", default-features = false } # the dependent crate should set its own features
 moka = { version = "0.9.4" }
-bytes = "1.2.1"
+bytes = "1.4.0"
diff --git a/mvstore-stress/Cargo.toml b/mvstore-stress/Cargo.toml
index 185e095..2103008 100644
--- a/mvstore-stress/Cargo.toml
+++ b/mvstore-stress/Cargo.toml
@@ -17,7 +17,7 @@ url = "2.3.1"
 hex = "0.4.3"
 serde = { version = "1", features = ["derive"] }
 rmp-serde = "1.1.0"
-bytes = "1.2.1"
+bytes = "1.4.0"
 tokio-util = { version = "0.7.3", features = ["io", "codec"] }
 futures = "0.3"
 serde_json = "1"
diff --git a/mvstore/Cargo.toml b/mvstore/Cargo.toml
index ac9d8f7..035320b 100644
--- a/mvstore/Cargo.toml
+++ b/mvstore/Cargo.toml
@@ -33,7 +33,7 @@ url = "2.3.1"
 hex = "0.4.3"
 serde = { version = "1", features = ["derive"] }
 rmp-serde = "1.1.0"
-bytes = { version = "1.2.1", features = ["serde"] }
+bytes = { version = "1.4.0", features = ["serde"] }
 tokio-util = { version = "0.7.3", features = ["io", "codec"] }
 futures = "0.3"
 blake3 = "1.3.1"