diff --git a/Cargo.lock b/Cargo.lock
index 70784252..32942cb9 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -25,9 +25,9 @@ checksum = "55cc3b69f167a1ef2e161439aa98aed94e6028e5f9a59be9a6ffb47aef1651f9"
 
 [[package]]
 name = "arbitrary"
-version = "1.4.1"
+version = "1.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dde20b3d026af13f561bdd0f15edf01fc734f0dafcedbaf42bba506a9517f223"
+checksum = "c3d036a3c4ab069c7b410a2ce876bd74808d2d0888a82667669f8e783a898bf1"
 dependencies = [
  "derive_arbitrary",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 79432890..2b870419 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -18,7 +18,7 @@ bitvec = { version = "1", default-features = false, features = ["alloc"], option
 bytes = { version = "1", default-features = false, optional = true }
 byte-slice-cast = { version = "1.2.3", default-features = false }
 generic-array = { version = "0.14.7", optional = true }
-arbitrary = { version = "1.4.1", features = ["derive"], optional = true }
+arbitrary = { version = "1.4.2", features = ["derive"], optional = true }
 impl-trait-for-tuples = "0.2.3"
 const_format = { version = "0.2.34" }
 
diff --git a/fuzzer/Cargo.toml b/fuzzer/Cargo.toml
index 65babac4..4f584546 100644
--- a/fuzzer/Cargo.toml
+++ b/fuzzer/Cargo.toml
@@ -9,5 +9,5 @@ publish = false
 [dependencies]
 parity-scale-codec = { path = "..", features = ["derive", "bit-vec", "fuzz"] }
 honggfuzz = "0.5.57"
-arbitrary = { version = "1.4.1", features = ["derive"] }
+arbitrary = { version = "1.4.2", features = ["derive"] }
 bitvec = { version = "1", features = ["alloc"] }