diff --git a/src/rust/engine/Cargo.lock b/src/rust/engine/Cargo.lock
index 47842e53e2f..a0096cd47c0 100644
--- a/src/rust/engine/Cargo.lock
+++ b/src/rust/engine/Cargo.lock
@@ -1154,9 +1154,9 @@ dependencies = [
 
 [[package]]
 name = "hex"
-version = "0.3.2"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "805026a5d0141ffc30abb3be3173848ad46a1b1664fe632428479619a3644d77"
+checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 
 [[package]]
 name = "http"
diff --git a/src/rust/engine/hashing/Cargo.toml b/src/rust/engine/hashing/Cargo.toml
index f17d479d499..2cfdc78a8d3 100644
--- a/src/rust/engine/hashing/Cargo.toml
+++ b/src/rust/engine/hashing/Cargo.toml
@@ -9,7 +9,7 @@ publish = false
 byteorder = "1.3"
 digest = "0.9"
 generic-array = "0.14"
-hex = "0.3.1"
+hex = "0.4.3"
 sha2 = "0.9"
 serde = { version = "1.0", features = ["derive"] }