diff --git a/Cargo.lock b/Cargo.lock
index 0f5119832..9b2da0153 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2987,9 +2987,9 @@ dependencies = [
 
 [[package]]
 name = "secp256k1"
-version = "0.20.2"
+version = "0.20.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ee5070fdc6f26ca5be6dcfc3d07c76fdb974a63a8b246b459854274145f5a258"
+checksum = "97d03ceae636d0fed5bae6a7f4f664354c5f4fcedf6eef053fef17e49f837d0a"
 dependencies = [
  "secp256k1-sys",
  "serde",
diff --git a/zebra-chain/Cargo.toml b/zebra-chain/Cargo.toml
index a89f91607..faade7b6f 100644
--- a/zebra-chain/Cargo.toml
+++ b/zebra-chain/Cargo.toml
@@ -36,7 +36,7 @@ jubjub = "0.6.0"
 lazy_static = "1.4.0"
 rand_core = "0.6"
 ripemd160 = "0.9"
-secp256k1 = { version = "0.20.2", features = ["serde"] }
+secp256k1 = { version = "0.20.3", features = ["serde"] }
 serde = { version = "1", features = ["serde_derive", "rc"] }
 serde-big-array = "0.3.2"
 sha2 = { version = "0.9.5", features=["compress"] }