diff --git a/src/tools/build-manifest/src/main.rs b/src/tools/build-manifest/src/main.rs
index 5e8559725f1..9d88ac8dd04 100644
--- a/src/tools/build-manifest/src/main.rs
+++ b/src/tools/build-manifest/src/main.rs
@@ -1,8 +1,7 @@
 #![deny(rust_2018_idioms)]
 
 use toml;
-#[macro_use]
-extern crate serde_derive;
+use serde_derive::Serialize;
 
 use std::collections::BTreeMap;
 use std::env;