diff --git a/Cargo.lock b/Cargo.lock
index 729f93ee..7be79d4d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2423,9 +2423,9 @@ checksum = "830b246a0e5f20af87141b25c173cd1b609bd7779a4617d6ec582abaf90870f3"
 
 [[package]]
 name = "once_cell"
-version = "1.14.0"
+version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2f7254b99e31cad77da24b08ebf628882739a608578bb1bcdfc1f9c21260d7c0"
+checksum = "e82dad04139b71a90c080c8463fe0dc7902db5192d939bd0950f074d014339e1"
 
 [[package]]
 name = "oorandom"
diff --git a/ethers-addressbook/Cargo.toml b/ethers-addressbook/Cargo.toml
index eb5e0d96..a7a58264 100644
--- a/ethers-addressbook/Cargo.toml
+++ b/ethers-addressbook/Cargo.toml
@@ -11,7 +11,7 @@ repository = "https://github.com/gakonst/ethers-rs"
 keywords = ["ethereum", "web3", "celo", "ethers"]
 
 [dependencies]
-once_cell = "1.14.0"
+once_cell = "1.15.0"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 
diff --git a/ethers-contract/Cargo.toml b/ethers-contract/Cargo.toml
index 988ac4dc..d6512ab6 100644
--- a/ethers-contract/Cargo.toml
+++ b/ethers-contract/Cargo.toml
@@ -20,7 +20,7 @@ ethers-derive-eip712 = { version = "^0.17.0", path = "../ethers-core/ethers-deri
 serde = { version = "1.0.124", default-features = false }
 serde_json = { version = "1.0.64", default-features = false }
 thiserror = { version = "1.0", default-features = false }
-once_cell = { version = "1.14.0" }
+once_cell = { version = "1.15.0" }
 pin-project = { version = "1.0.11", default-features = false }
 futures-util = { version = "^0.3" }
 hex = { version = "0.4.3", default-features = false, features = ["std"] }
diff --git a/ethers-core/Cargo.toml b/ethers-core/Cargo.toml
index b2f0ef27..06233003 100644
--- a/ethers-core/Cargo.toml
+++ b/ethers-core/Cargo.toml
@@ -31,7 +31,7 @@ serde_json = { version = "1.0.64", default-features = false }
 thiserror = { version = "1.0", default-features = false }
 bytes = { version = "1.2.1", features = ["serde"] }
 hex = { version = "0.4.3", default-features = false, features = ["std"] }
-once_cell = { version = "1.14.0", optional = true }
+once_cell = { version = "1.15.0", optional = true }
 unicode-xid = "0.2.4"
 strum = { version = "0.24", features = ["derive"] }
 
@@ -47,7 +47,7 @@ rust_decimal = { version = "1.26.1", features = ["maths"] }
 [dev-dependencies]
 serde_json = { version = "1.0.64", default-features = false }
 bincode = { version = "1.3.3", default-features = false }
-once_cell = { version = "1.14.0" }
+once_cell = { version = "1.15.0" }
 hex-literal = "0.3.4"
 rand = "0.8.5"
 
diff --git a/ethers-middleware/Cargo.toml b/ethers-middleware/Cargo.toml
index 5fd9e868..c807d5ca 100644
--- a/ethers-middleware/Cargo.toml
+++ b/ethers-middleware/Cargo.toml
@@ -47,7 +47,7 @@ ethers-providers = { version = "^0.17.0", path = "../ethers-providers", default-
     "ws",
     "rustls"
 ] }
-once_cell = "1.14.0"
+once_cell = "1.15.0"
 ethers-solc = { version = "^0.17.0", path = "../ethers-solc" }
 serial_test = "0.9.0"
 
diff --git a/ethers-providers/Cargo.toml b/ethers-providers/Cargo.toml
index 021ee7a6..92c50b91 100644
--- a/ethers-providers/Cargo.toml
+++ b/ethers-providers/Cargo.toml
@@ -40,7 +40,7 @@ tracing = { version = "0.1.36", default-features = false }
 tracing-futures = { version = "0.2.5", default-features = false, features = ["std-future"] }
 
 bytes = { version = "1.2.1", default-features = false, optional = true }
-once_cell = "1.14.0"
+once_cell = "1.15.0"
 hashers = "1.0.1"
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
diff --git a/ethers-solc/Cargo.toml b/ethers-solc/Cargo.toml
index 47936a6b..3ab74023 100644
--- a/ethers-solc/Cargo.toml
+++ b/ethers-solc/Cargo.toml
@@ -23,7 +23,7 @@ semver = { version = "1.0.14", features = ["serde"] }
 walkdir = "2.3.2"
 tokio = { version = "1.18", default-features = false, features = ["rt"] }
 futures-util = { version = "^0.3", optional = true }
-once_cell = "1.14.0"
+once_cell = "1.15.0"
 regex = "1.6.0"
 md-5 = "0.10.4"
 thiserror = "1.0"