diff --git a/src/lib.rs b/src/lib.rs
index ae91eb65..7ba5c6e8 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -19,7 +19,7 @@
 //!
 //! ## OAEP encryption
 //! ```
-//! use rsa::{RsaPrivateKey, RsaPublicKey, Oaep};
+//! use rsa::{RsaPrivateKey, RsaPublicKey, Oaep, sha2::Sha256};
 //!
 //! let mut rng = rand::thread_rng();
 //!