diff --git a/Cargo.lock b/Cargo.lock
index 33e1de69..ca64aec0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -485,9 +485,9 @@ dependencies = [
 
 [[package]]
 name = "hex-literal"
-version = "0.4.1"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6fe2267d4ed49bc07b63801559be28c718ea06c4738b7a03c94df7386d2cde46"
+checksum = "bcaaec4551594c969335c98c903c1397853d4198408ea609190f420500f6be71"
 
 [[package]]
 name = "hkd32"
diff --git a/hkd32/Cargo.toml b/hkd32/Cargo.toml
index 38d4a79b..ec4ca04c 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 = "1.0"
 rand_core = { version = "0.6", features = ["std"] }
 
 [features]