diff --git a/serde_with_macros/src/lib.rs b/serde_with_macros/src/lib.rs
index 88870091..01b19553 100644
--- a/serde_with_macros/src/lib.rs
+++ b/serde_with_macros/src/lib.rs
@@ -27,9 +27,6 @@
 //!
 //! [`serde_with`]: https://crates.io/crates/serde_with/
 
-#[allow(unused_extern_crates)]
-extern crate proc_macro;
-
 mod apply;
 mod utils;