diff --git a/deps/pybind11 b/deps/pybind11
index 07de0d8..d361ea1 160000
--- a/deps/pybind11
+++ b/deps/pybind11
@@ -1 +1 @@
-Subproject commit 07de0d8627101be53986e841cd4e21ee38c2498a
+Subproject commit d361ea15fb72bfba21f6d3aac9491467a13ebb21
diff --git a/src/metapy_index.cpp b/src/metapy_index.cpp
index fe389d8..cffed87 100644
--- a/src/metapy_index.cpp
+++ b/src/metapy_index.cpp
@@ -158,7 +158,8 @@ void metapy_bind_index(py::module& m)
         },
         "Returns the metadata value for a given field name");
 
-    py::class_<index::disk_index>{m_idx, "DiskIndex"}
+    py::class_<index::disk_index, std::shared_ptr<index::disk_index>>{
+        m_idx, "DiskIndex"}
         .def("index_name", &index::disk_index::index_name)
         .def("num_docs", &index::disk_index::num_docs)
         .def("docs", &index::disk_index::docs)