diff --git a/units/src/lib.rs b/units/src/lib.rs
index 249e9867b..abd1875f8 100644
--- a/units/src/lib.rs
+++ b/units/src/lib.rs
@@ -27,10 +27,6 @@ extern crate alloc;
 #[cfg(feature = "std")]
 extern crate std;
 
-/// A generic serialization/deserialization framework.
-#[cfg(feature = "serde")]
-pub extern crate serde;
-
 pub mod amount;
 #[cfg(feature = "alloc")]
 pub mod block;