diff --git a/crates/proc-macro-api/src/lib.rs b/crates/proc-macro-api/src/lib.rs
index 68b3afc3e8..e83ddb8594 100644
--- a/crates/proc-macro-api/src/lib.rs
+++ b/crates/proc-macro-api/src/lib.rs
@@ -10,7 +10,7 @@
     feature = "sysroot-abi",
     feature(proc_macro_internals, proc_macro_diagnostic, proc_macro_span)
 )]
-#![allow(internal_features)]
+#![allow(internal_features, unused_features)]
 #![cfg_attr(feature = "in-rust-tree", feature(rustc_private))]
 
 #[cfg(feature = "in-rust-tree")]
diff --git a/crates/proc-macro-srv/src/lib.rs b/crates/proc-macro-srv/src/lib.rs
index 65de804404..734cb4ecc1 100644
--- a/crates/proc-macro-srv/src/lib.rs
+++ b/crates/proc-macro-srv/src/lib.rs
@@ -18,7 +18,8 @@
     internal_features,
     clippy::disallowed_types,
     clippy::print_stderr,
-    unused_crate_dependencies
+    unused_crate_dependencies,
+    unused_features
 )]
 #![deny(deprecated_safe, clippy::undocumented_unsafe_blocks)]