diff --git a/Cargo.lock b/Cargo.lock
index 8048c5b5..664f8fb7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -498,9 +498,9 @@ dependencies = [
 
 [[package]]
 name = "blake2b_simd"
-version = "1.0.1"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3c2f0dc9a68c6317d884f97cc36cf5a3d20ba14ce404227df55e1af708ab04bc"
+checksum = "23285ad32269793932e830392f2fe2f83e26488fd3ec778883a93c8323735780"
 dependencies = [
  "arrayref",
  "arrayvec",
@@ -509,9 +509,9 @@ dependencies = [
 
 [[package]]
 name = "blake2s_simd"
-version = "1.0.1"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6637f448b9e61dfadbdcbae9a885fadee1f3eaffb1f8d3c1965d3ade8bdfd44f"
+checksum = "94230421e395b9920d23df13ea5d77a20e1725331f90fbbf6df6040b33f756ae"
 dependencies = [
  "arrayref",
  "arrayvec",
@@ -898,9 +898,9 @@ dependencies = [
 
 [[package]]
 name = "constant_time_eq"
-version = "0.2.6"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "21a53c0a4d288377e7415b53dcfc3c04da5cdc2cc95c8d5ac178b58f0b861ad6"
+checksum = "f7144d30dcf0fafbce74250a3963025d8d52177934239851c917d29f1df280c2"
 
 [[package]]
 name = "core-foundation-sys"
diff --git a/zebra-chain/Cargo.toml b/zebra-chain/Cargo.toml
index ff2645be..085bfb69 100644
--- a/zebra-chain/Cargo.toml
+++ b/zebra-chain/Cargo.toml
@@ -56,8 +56,8 @@ bench = ["zebra-test"]
 bitvec = "1.0.1"
 bitflags = "2.4.0"
 bitflags-serde-legacy = "0.1.1"
-blake2b_simd = "1.0.1"
-blake2s_simd = "1.0.1"
+blake2b_simd = "1.0.2"
+blake2s_simd = "1.0.2"
 bridgetree = "0.3.0"
 bs58 = { version = "0.5.0", features = ["check"] }
 byteorder = "1.4.3"
diff --git a/zebra-consensus/Cargo.toml b/zebra-consensus/Cargo.toml
index 4e73e474..32760e77 100644
--- a/zebra-consensus/Cargo.toml
+++ b/zebra-consensus/Cargo.toml
@@ -35,7 +35,7 @@ getblocktemplate-rpcs = [
 proptest-impl = ["proptest", "proptest-derive", "zebra-chain/proptest-impl", "zebra-state/proptest-impl"]
 
 [dependencies]
-blake2b_simd = "1.0.1"
+blake2b_simd = "1.0.2"
 bellman = "0.14.0"
 bls12_381 = "0.8.0"
 halo2 = { package = "halo2_proofs", version = "0.3.0" }