diff --git a/Cargo.lock b/Cargo.lock
index 1c897bc..e976db5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -129,15 +129,14 @@ checksum = "f46ad14479a25103f283c0f10005961cf086d8dc42205bb44c46ac563475dca6"
 
 [[package]]
 name = "const-hex"
-version = "1.14.1"
+version = "1.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "83e22e0ed40b96a48d3db274f72fd365bd78f67af39b6bbd47e8a15e1c6207ff"
+checksum = "b6407bff74dea37e0fa3dc1c1c974e5d46405f0c987bf9997a0762adce71eda6"
 dependencies = [
  "cfg-if",
  "cpufeatures",
- "hex",
  "proptest",
- "serde",
+ "serde_core",
 ]
 
 [[package]]
@@ -542,10 +541,11 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.219"
+version = "1.0.223"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f0e2c6ed6606019b4e29e69dbaba95b11854410e5347d525002456dbbb786b6"
+checksum = "a505d71960adde88e293da5cb5eda57093379f64e61cf77bf0e6a63af07a7bac"
 dependencies = [
+ "serde_core",
  "serde_derive",
 ]
 
@@ -558,11 +558,20 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "serde_core"
+version = "1.0.223"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "20f57cbd357666aa7b3ac84a90b4ea328f1d4ddb6772b430caa5d9e1309bb9e9"
+dependencies = [
+ "serde_derive",
+]
+
 [[package]]
 name = "serde_derive"
-version = "1.0.219"
+version = "1.0.223"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5b0276cf7f2c73365f7157c8123c21cd9a50fbbd844757af28ca1f5925fc2a00"
+checksum = "3d428d07faf17e306e699ec1e91996e5a165ba5d6bce5b5155173e91a8a01a56"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/Cargo.toml b/Cargo.toml
index 7e45ba6..25482d4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -46,7 +46,7 @@ thiserror   = { version = "2.0", default-features = false }
 
 [dev-dependencies]
 # crates.io
-const-hex  = { version = "1.14" }
+const-hex  = { version = "1.16" }
 criterion  = { version = "0.6" }
 faster-hex = { version = "0.10" }
 hex_crate  = { package = "hex", version = "0.4" }