diff --git a/Cargo.toml b/Cargo.toml
index 5ac4219..b5fff6b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,7 +12,7 @@ A Win32 command-line password manager.
 clap = "2.31"
 clipboard-win = "2.1"
 failure = "0.1"
-hex = "0.3"
+hex = "0.4"
 memsec = "0.5"
 seckey = "0.9"
 serde = "1.0"