diff --git a/Cargo.lock b/Cargo.lock
index af3fd6d5bd..7a9fb20764 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -460,9 +460,9 @@ checksum = "e3b5ca7a04898ad4bcd41c90c5285445ff5b791899bb1b0abdd2a2aa791211d7"
 
 [[package]]
 name = "byteorder"
-version = "1.3.4"
+version = "1.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08c48aae112d48ed9f069b33538ea9e3e90aa263cfa3d1c24309612b1f7472de"
+checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
 
 [[package]]
 name = "bytes"
diff --git a/comit/Cargo.toml b/comit/Cargo.toml
index 6e3796c30d..c4217f432c 100644
--- a/comit/Cargo.toml
+++ b/comit/Cargo.toml
@@ -11,7 +11,7 @@ async-trait = "0.1"
 base64 = "0.13"
 bitcoin = { version = "0.25", features = [ "rand", "use-serde" ] }
 blockchain_contracts = "0.4"
-byteorder = "1.3"
+byteorder = "1.4"
 conquer-once = "0.3"
 derivative = "2"
 ethbloom = "0.9"