diff --git a/Cargo.lock b/Cargo.lock
index 8f4b2ae9..8cf86155 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2836,9 +2836,9 @@ dependencies = [
 
 [[package]]
 name = "sha2"
-version = "0.9.2"
+version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6e7aab86fe2149bad8c507606bdb3f4ef5e7b2380eb92350f56122cca72a42a8"
+checksum = "fa827a14b29ab7f44778d14a88d3cb76e949c45083f7dbfa507d0cb699dc12de"
 dependencies = [
  "block-buffer 0.9.0",
  "cfg-if 1.0.0",
diff --git a/zebra-chain/Cargo.toml b/zebra-chain/Cargo.toml
index cc0c7964..5e7fb17c 100644
--- a/zebra-chain/Cargo.toml
+++ b/zebra-chain/Cargo.toml
@@ -30,7 +30,7 @@ ripemd160 = "0.8.0"
 secp256k1 = { version = "0.20.1", features = ["serde"] }
 serde = { version = "1", features = ["serde_derive", "rc"] }
 serde-big-array = "0.3.1"
-sha2 = { version = "0.9.2", features=["compress"] }
+sha2 = { version = "0.9.3", features=["compress"] }
 thiserror = "1"
 x25519-dalek = { version = "1.1", features = ["serde"] }