diff --git a/tests/ed25519.rs b/tests/ed25519.rs
index ff89b90..c7e358a 100644
--- a/tests/ed25519.rs
+++ b/tests/ed25519.rs
@@ -11,7 +11,6 @@
 
 #[cfg(all(test, feature = "serde"))]
 extern crate bincode;
-extern crate clear_on_drop;
 extern crate ed25519_dalek;
 extern crate hex;
 extern crate rand;