diff --git a/cranelift/src/cton-util.rs b/cranelift/src/cton-util.rs
index 4e18001a0b..b940947523 100644
--- a/cranelift/src/cton-util.rs
+++ b/cranelift/src/cton-util.rs
@@ -3,7 +3,6 @@ extern crate cretonne;
 extern crate cton_reader;
 extern crate cretonne_wasm;
 extern crate docopt;
-extern crate serde;
 #[macro_use]
 extern crate serde_derive;
 extern crate filecheck;