diff --git a/Cargo.lock b/Cargo.lock
index ccf4c129..51b1b01e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -498,9 +498,9 @@ dependencies = [
 
 [[package]]
 name = "hex-literal"
-version = "0.4.1"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6fe2267d4ed49bc07b63801559be28c718ea06c4738b7a03c94df7386d2cde46"
+checksum = "e712f64ec3850b98572bffac52e2c6f282b29fe6c5fa6d42334b30be438d95c1"
 
 [[package]]
 name = "hkd32"
diff --git a/hkd32/Cargo.toml b/hkd32/Cargo.toml
index 38d4a79b..d0455101 100644
--- a/hkd32/Cargo.toml
+++ b/hkd32/Cargo.toml
@@ -30,7 +30,7 @@ pbkdf2 = { version = "0.12", optional = true, default-features = false, features
 subtle-encoding = { version = "=0.6.0-pre", optional = true, default-features = false, path = "../subtle-encoding" }
 
 [dev-dependencies]
-hex-literal = "0.4"
+hex-literal = "1.1"
 rand_core = { version = "0.6", features = ["std"] }
 
 [features]