diff --git a/Cargo.lock b/Cargo.lock
index 83c9b049..28aaf502 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2976,9 +2976,9 @@ dependencies = [
 
 [[package]]
 name = "secp256k1"
-version = "0.20.3"
+version = "0.21.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "97d03ceae636d0fed5bae6a7f4f664354c5f4fcedf6eef053fef17e49f837d0a"
+checksum = "ab7883017d5b21f011ef8040ea9c6c7ac90834c0df26a69e4c0b06276151f125"
 dependencies = [
  "secp256k1-sys",
  "serde",
@@ -2986,9 +2986,9 @@ dependencies = [
 
 [[package]]
 name = "secp256k1-sys"
-version = "0.4.0"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "67e4b6455ee49f5901c8985b88f98fb0a0e1d90a6661f5a03f4888bd987dad29"
+checksum = "957da2573cde917463ece3570eab4a0b3f19de6f1646cde62e6fd3868f566036"
 dependencies = [
  "cc",
 ]
diff --git a/zebra-chain/Cargo.toml b/zebra-chain/Cargo.toml
index 9b6a08cd..7c7b372a 100644
--- a/zebra-chain/Cargo.toml
+++ b/zebra-chain/Cargo.toml
@@ -36,7 +36,7 @@ jubjub = "0.8.0"
 lazy_static = "1.4.0"
 rand_core = "0.6"
 ripemd160 = "0.9"
-secp256k1 = { version = "0.20.3", features = ["serde"] }
+secp256k1 = { version = "0.21.2", features = ["serde"] }
 serde = { version = "1", features = ["serde_derive", "rc"] }
 serde-big-array = "0.3.2"
 sha2 = { version = "0.9.8", features=["compress"] }