diff --git a/Cargo.lock b/Cargo.lock
index 9efa3ec0..4ad6b6da 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -694,10 +694,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "245097e9a4535ee1e3e3931fcfcd55a796a44c643e8596ff6566d68f09b87bbc"
 
 [[package]]
-name = "cpuid-bool"
-version = "0.1.2"
+name = "cpufeatures"
+version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8aebca1129a03dc6dc2b127edd729435bbc4a37e1d5f4d7513165089ceb02634"
+checksum = "5cd5a7748210e7ec1a9696610b1015e6e31fbf58f77a160801f124bd1c36592a"
 
 [[package]]
 name = "crc32fast"
@@ -3214,13 +3214,13 @@ dependencies = [
 
 [[package]]
 name = "sha2"
-version = "0.9.3"
+version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fa827a14b29ab7f44778d14a88d3cb76e949c45083f7dbfa507d0cb699dc12de"
+checksum = "d8f6b75b17576b792bef0db1bcc4b8b8bcdf9506744cf34b974195487af6cff2"
 dependencies = [
  "block-buffer",
  "cfg-if 1.0.0",
- "cpuid-bool",
+ "cpufeatures",
  "digest",
  "opaque-debug",
 ]
diff --git a/zebra-chain/Cargo.toml b/zebra-chain/Cargo.toml
index f3bea73a..5e2980b9 100644
--- a/zebra-chain/Cargo.toml
+++ b/zebra-chain/Cargo.toml
@@ -40,7 +40,7 @@ ripemd160 = "0.9"
 secp256k1 = { version = "0.20.2", features = ["serde"] }
 serde = { version = "1", features = ["serde_derive", "rc"] }
 serde-big-array = "0.3.2"
-sha2 = { version = "0.9.3", features=["compress"] }
+sha2 = { version = "0.9.4", features=["compress"] }
 thiserror = "1"
 x25519-dalek = { version = "1.1", features = ["serde"] }