diff --git a/rust/internal.rs b/rust/internal.rs
index 1e0f536..e56c9dc 100644
--- a/rust/internal.rs
+++ b/rust/internal.rs
@@ -51,6 +51,17 @@
         _data: [u8; 0],
         _marker: std::marker::PhantomData<(*mut u8, ::std::marker::PhantomPinned)>,
     }
+
+    /// Opaque pointee for [`RawRepeatedField`]
+    ///
+    /// This type is not meant to be dereferenced in Rust code.
+    /// It is only meant to provide type safety for raw pointers
+    /// which are manipulated behind FFI.
+    #[repr(C)]
+    pub struct RawRepeatedFieldData {
+        _data: [u8; 0],
+        _marker: std::marker::PhantomData<(*mut u8, ::std::marker::PhantomPinned)>,
+    }
 }
 
 /// A raw pointer to the underlying message for this runtime.
@@ -59,6 +70,9 @@
 /// A raw pointer to the underlying arena for this runtime.
 pub type RawArena = NonNull<_opaque_pointees::RawArenaData>;
 
+/// A raw pointer to the underlying repeated field container for this runtime.
+pub type RawRepeatedField = NonNull<_opaque_pointees::RawRepeatedFieldData>;
+
 /// Represents an ABI-stable version of `NonNull<[u8]>`/`string_view` (a
 /// borrowed slice of bytes) for FFI use only.
 ///