diff --git a/Cargo.lock b/Cargo.lock
index fefd0e1d..e9600d09 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2183,9 +2183,9 @@ checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
 
 [[package]]
 name = "tokio"
-version = "1.2.0"
+version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e8190d04c665ea9e6b6a0dc45523ade572c088d2e6566244c1122671dbf4ae3a"
+checksum = "134af885d758d645f0f0505c9a8b3f9bf8a348fd822e112ab5248138348f1722"
 dependencies = [
  "autocfg",
  "bytes",
diff --git a/ethers-contract/Cargo.toml b/ethers-contract/Cargo.toml
index 80720150..1af1e3b0 100644
--- a/ethers-contract/Cargo.toml
+++ b/ethers-contract/Cargo.toml
@@ -27,7 +27,7 @@ hex = { version = "0.4.3", default-features = false, features = ["std"] }
 [dev-dependencies]
 ethers = { version = "0.2", path = "../ethers" }
 ethers-providers = { version = "0.2", path = "../ethers-providers", default-features = false, features = ["ws"] }
-tokio = { version = "1.2", default-features = false, features = ["macros"] }
+tokio = { version = "1.4", default-features = false, features = ["macros"] }
 
 ethers-signers = { version = "0.2", path = "../ethers-signers" }
 ethers-middleware = { version = "0.2", path = "../ethers-middleware" }
diff --git a/ethers-core/Cargo.toml b/ethers-core/Cargo.toml
index 578efb0a..fb463b48 100644
--- a/ethers-core/Cargo.toml
+++ b/ethers-core/Cargo.toml
@@ -37,7 +37,7 @@ hex = { version = "0.4.3", default-features = false, features = ["std"] }
 funty = "=1.1.0"
 
 # async
-tokio = { version = "1.2", default-features = false, optional = true}
+tokio = { version = "1.4", default-features = false, optional = true}
 futures-util = { version = "0.3.13", default-features = false, optional = true}
 
 [dev-dependencies]
diff --git a/ethers-middleware/Cargo.toml b/ethers-middleware/Cargo.toml
index d6c752f5..4f7acb21 100644
--- a/ethers-middleware/Cargo.toml
+++ b/ethers-middleware/Cargo.toml
@@ -32,14 +32,14 @@ reqwest = { version = "0.11.2", default-features = false, features = ["json", "r
 url = { version = "2.2.1", default-features = false }
 
 serde_json = { version = "1.0.64", default-features = false }
-tokio = { version = "1.2" }
+tokio = { version = "1.4" }
 
 [dev-dependencies]
 ethers = { version = "0.2", path = "../ethers" }
 futures-executor = { version = "0.3.13", features = ["thread-pool"] }
 hex = { version = "0.4.3", default-features = false, features = ["std"] }
 rand = { version = "0.7.3", default-features = false }
-tokio = { version = "1.2", default-features = false, features = ["rt", "macros", "time"] }
+tokio = { version = "1.4", default-features = false, features = ["rt", "macros", "time"] }
 
 [features]
 celo = ["ethers-core/celo", "ethers-providers/celo", "ethers-signers/celo"]
diff --git a/ethers-providers/Cargo.toml b/ethers-providers/Cargo.toml
index f4837c3f..56bb45d1 100644
--- a/ethers-providers/Cargo.toml
+++ b/ethers-providers/Cargo.toml
@@ -37,12 +37,12 @@ tracing = { version = "0.1.25", default-features = false }
 tracing-futures = { version = "0.2.5", default-features = false, features = ["std-future"] }
 
 # tokio
-tokio = { version = "1.2", default-features = false, optional = true }
+tokio = { version = "1.4", default-features = false, optional = true }
 tokio-tungstenite = { version = "0.13.0", default-features = false, features = ["connect", "tls"], optional = true }
 
 [dev-dependencies]
 ethers = { version = "0.2", path = "../ethers" }
-tokio = { version = "1.2", default-features = false, features = ["rt", "macros"] }
+tokio = { version = "1.4", default-features = false, features = ["rt", "macros"] }
 
 [features]
 default = ["ws"]
diff --git a/ethers-signers/Cargo.toml b/ethers-signers/Cargo.toml
index e25aa730..f9283ec0 100644
--- a/ethers-signers/Cargo.toml
+++ b/ethers-signers/Cargo.toml
@@ -33,7 +33,7 @@ ethers = { version = "0.2", path = "../ethers" }
 yubihsm = { version = "0.38.0", features = ["secp256k1", "usb", "mockhsm"] }
 
 tempfile = "3.2.0"
-tokio = { version = "1.2", default-features = false, features = ["macros"] }
+tokio = { version = "1.4", default-features = false, features = ["macros"] }
 serde_json = { version = "1.0.64", default-features = false }
 
 [features]
diff --git a/ethers/Cargo.toml b/ethers/Cargo.toml
index ed664243..b484911e 100644
--- a/ethers/Cargo.toml
+++ b/ethers/Cargo.toml
@@ -47,4 +47,4 @@ anyhow = "1.0.38"
 rand = "0.7"
 serde = { version = "1.0.124", features = ["derive"] }
 serde_json = "1.0.64"
-tokio = { version = "1.2", features = ["macros", "rt-multi-thread"] }
+tokio = { version = "1.4", features = ["macros", "rt-multi-thread"] }