diff --git a/src/lib.rs b/src/lib.rs
index 91b25ec3e..7f334b04d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -477,6 +477,7 @@ mod weak_ptr;
 
 pub use crate::cxx_vector::CxxVector;
 #[cfg(feature = "alloc")]
+#[cfg_attr(doc_cfg, doc(cfg(feature = "alloc")))]
 pub use crate::exception::Exception;
 pub use crate::extern_type::{kind, ExternType};
 pub use crate::shared_ptr::SharedPtr;