diff --git a/rust/bssl-crypto/src/lib.rs b/rust/bssl-crypto/src/lib.rs
index c538467..99140b7 100644
--- a/rust/bssl-crypto/src/lib.rs
+++ b/rust/bssl-crypto/src/lib.rs
@@ -32,6 +32,9 @@
 /// AES block operations.
 pub mod aes;
 
+/// Ciphers.
+pub mod cipher;
+
 /// Hash functions.
 pub mod digest;