diff --git a/Cargo.lock b/Cargo.lock
index 8b0adf9..0fa0f67 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -204,9 +204,9 @@ 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 = "memchr"
diff --git a/Cargo.toml b/Cargo.toml
index ef4a60e..9ef40ab 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -51,7 +51,7 @@ unstable = []
 std = []
 
 [dev-dependencies]
-hex-literal = "0.4"
+hex-literal = "1.0"
 pretty_assertions = "1.0"
 test-case = "3.0"