diff --git a/cpp/src/neighbors/cagra.cuh b/cpp/src/neighbors/cagra.cuh
index 80e2f2a07e..d84f69bb87 100644
--- a/cpp/src/neighbors/cagra.cuh
+++ b/cpp/src/neighbors/cagra.cuh
@@ -475,42 +475,6 @@ void extend(raft::resources const& handle,
   extend_core<T, IdxT, DatasetViewT>(handle, index, params, extended_dataset, new_start_row);
 }
 
-template <class T, class IdxT, cuvs::neighbors::ann_dataset_view DatasetViewT>
-void extend(raft::resources const& handle,
-            const cagra::extend_params& params,
-            cuvs::neighbors::device_standard_dataset_view<T, int64_t> extended_dataset,
-            int64_t new_start_row,
-            cuvs::neighbors::cagra::index<T, IdxT, DatasetViewT>& index)
-{
-  RAFT_FAIL(
-    "cagra::extend requires a padded extended dataset view. "
-    "Concatenate the original and additional vectors into a padded dataset and pass that view.");
-}
-
-template <class T, class IdxT, cuvs::neighbors::ann_dataset_view DatasetViewT>
-void extend(raft::resources const& handle,
-            const cagra::extend_params& params,
-            cuvs::neighbors::host_padded_dataset_view<T, int64_t> extended_dataset,
-            int64_t new_start_row,
-            cuvs::neighbors::cagra::index<T, IdxT, DatasetViewT>& index)
-{
-  RAFT_FAIL(
-    "cagra::extend requires a device-padded extended dataset view. "
-    "Concatenate on the device (or copy the concatenated host matrix to device) before extend.");
-}
-
-template <class T, class IdxT, cuvs::neighbors::ann_dataset_view DatasetViewT>
-void extend(raft::resources const& handle,
-            const cagra::extend_params& params,
-            cuvs::neighbors::host_standard_dataset_view<T, int64_t> extended_dataset,
-            int64_t new_start_row,
-            cuvs::neighbors::cagra::index<T, IdxT, DatasetViewT>& index)
-{
-  RAFT_FAIL(
-    "cagra::extend requires a device-padded extended dataset view. "
-    "Concatenate the original and additional vectors into a padded device dataset first.");
-}
-
 template <class T, class IdxT, cuvs::neighbors::ann_dataset_view DatasetViewT>
 cuvs::neighbors::cagra::index<T, IdxT, DatasetViewT> merge(
   raft::resources const& handle,