diff --git a/hugr-persistent/src/lib.rs b/hugr-persistent/src/lib.rs
index 3dfa1d5147..1a320c88fd 100644
--- a/hugr-persistent/src/lib.rs
+++ b/hugr-persistent/src/lib.rs
@@ -1,3 +1,5 @@
+#![doc(hidden)] // TODO: remove when stable
+
 //! Persistent data structure for HUGR mutations.
 //!
 //! This crate provides a persistent data structure [`PersistentHugr`] that
diff --git a/hugr/src/lib.rs b/hugr/src/lib.rs
index 2cda839bfa..ce460ce404 100644
--- a/hugr/src/lib.rs
+++ b/hugr/src/lib.rs
@@ -141,7 +141,7 @@ pub use hugr_passes as algorithms;
 pub use hugr_llvm as llvm;
 
 #[cfg(feature = "persistent_unstable")]
-#[doc(inline)]
+#[doc(hidden)] // TODO: remove when stable
 pub use hugr_persistent as persistent;
 
 // Modules with hand-picked re-exports.