diff --git a/Cargo.toml b/Cargo.toml
index 9799420..a322787 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -46,7 +46,7 @@ rand_core = "0.4.0"
 unicode-normalization = { version = "=0.1.9", optional = true }
 rand = { version = "0.6.0", optional = true }
 serde = { version = "1.0", default-features = false, optional = true }
-zeroize = {version = "1.2", features = ["zeroize_derive"], optional = true}
+zeroize = {version = "1.5", features = ["zeroize_derive"], optional = true}
 
 [dev-dependencies]
 rand = { version = "0.6.0", optional = false }
diff --git a/src/lib.rs b/src/lib.rs
index 1aedcd7..7e007a8 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -56,7 +56,7 @@ use unicode_normalization::UnicodeNormalization;
 #[cfg(feature = "zeroize")]
 extern crate zeroize;
 #[cfg(feature = "zeroize")]
-use zeroize::Zeroize;
+use zeroize::{Zeroize, ZeroizeOnDrop};
 
 #[macro_use]
 mod internal_macros;
@@ -157,7 +157,7 @@ impl error::Error for Error {}
 ///
 /// Supported number of words are 12, 18 and 24.
 #[derive(Clone, Debug, Hash, PartialEq, Eq, PartialOrd, Ord)]
-#[cfg_attr(feature = "zeroize", derive(Zeroize), zeroize(drop))]
+#[cfg_attr(feature = "zeroize", derive(Zeroize, ZeroizeOnDrop))]
 pub struct Mnemonic {
 	/// The language the mnemonic.
 	lang: Language,