diff --git a/cpp/src/community/legacy/spectral_clustering.cu b/cpp/src/community/legacy/spectral_clustering.cu
index 631348f3826..e6d026ad22a 100644
--- a/cpp/src/community/legacy/spectral_clustering.cu
+++ b/cpp/src/community/legacy/spectral_clustering.cu
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020-2021, NVIDIA CORPORATION.
+ * Copyright (c) 2020-2022, NVIDIA CORPORATION.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -92,15 +92,15 @@ void balancedCutClustering_impl(legacy::GraphCSRView<vertex_t, edge_t, weight_t>
   using index_type = vertex_t;
   using value_type = weight_t;
 
-  raft::matrix::sparse_matrix_t<index_type, value_type> const r_csr_m{handle, graph};
+  raft::spectral::matrix::sparse_matrix_t<index_type, value_type> const r_csr_m{handle, graph};
 
-  raft::eigen_solver_config_t<index_type, value_type> eig_cfg{
+  raft::spectral::eigen_solver_config_t<index_type, value_type> eig_cfg{
     n_eig_vects, evs_max_it, restartIter_lanczos, evs_tol, reorthog, seed};
-  raft::lanczos_solver_t<index_type, value_type> eig_solver{eig_cfg};
+  raft::spectral::lanczos_solver_t<index_type, value_type> eig_solver{eig_cfg};
 
-  raft::cluster_solver_config_t<index_type, value_type> clust_cfg{
+  raft::spectral::cluster_solver_config_t<index_type, value_type> clust_cfg{
     n_clusters, kmean_max_it, kmean_tol, seed};
-  raft::kmeans_solver_t<index_type, value_type> cluster_solver{clust_cfg};
+  raft::spectral::kmeans_solver_t<index_type, value_type> cluster_solver{clust_cfg};
 
   raft::spectral::partition(
     handle, r_csr_m, eig_solver, cluster_solver, clustering, eig_vals, eig_vects);
@@ -160,15 +160,15 @@ void spectralModularityMaximization_impl(
   using index_type = vertex_t;
   using value_type = weight_t;
 
-  raft::matrix::sparse_matrix_t<index_type, value_type> const r_csr_m{handle, graph};
+  raft::spectral::matrix::sparse_matrix_t<index_type, value_type> const r_csr_m{handle, graph};
 
-  raft::eigen_solver_config_t<index_type, value_type> eig_cfg{
+  raft::spectral::eigen_solver_config_t<index_type, value_type> eig_cfg{
     n_eig_vects, evs_max_it, restartIter_lanczos, evs_tol, reorthog, seed};
-  raft::lanczos_solver_t<index_type, value_type> eig_solver{eig_cfg};
+  raft::spectral::lanczos_solver_t<index_type, value_type> eig_solver{eig_cfg};
 
-  raft::cluster_solver_config_t<index_type, value_type> clust_cfg{
+  raft::spectral::cluster_solver_config_t<index_type, value_type> clust_cfg{
     n_clusters, kmean_max_it, kmean_tol, seed};
-  raft::kmeans_solver_t<index_type, value_type> cluster_solver{clust_cfg};
+  raft::spectral::kmeans_solver_t<index_type, value_type> cluster_solver{clust_cfg};
 
   // not returned...
   // auto result =
@@ -192,7 +192,7 @@ void analyzeModularityClustering_impl(legacy::GraphCSRView<vertex_t, edge_t, wei
   using index_type = vertex_t;
   using value_type = weight_t;
 
-  raft::matrix::sparse_matrix_t<index_type, value_type> const r_csr_m{handle, graph};
+  raft::spectral::matrix::sparse_matrix_t<index_type, value_type> const r_csr_m{handle, graph};
 
   weight_t mod;
   raft::spectral::analyzeModularity(handle, r_csr_m, n_clusters, clustering, mod);
@@ -218,7 +218,7 @@ void analyzeBalancedCut_impl(legacy::GraphCSRView<vertex_t, edge_t, weight_t> co
   using index_type = vertex_t;
   using value_type = weight_t;
 
-  raft::matrix::sparse_matrix_t<index_type, value_type> const r_csr_m{handle, graph};
+  raft::spectral::matrix::sparse_matrix_t<index_type, value_type> const r_csr_m{handle, graph};
 
   raft::spectral::analyzePartition(handle, r_csr_m, n_clusters, clustering, edge_cut, cost);
 
diff --git a/cpp/src/linear_assignment/hungarian.cu b/cpp/src/linear_assignment/hungarian.cu
index 27e3e230920..dc7c3bdc38c 100644
--- a/cpp/src/linear_assignment/hungarian.cu
+++ b/cpp/src/linear_assignment/hungarian.cu
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020-2021, NVIDIA CORPORATION.
+ * Copyright (c) 2020-2022, NVIDIA CORPORATION.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,7 +16,7 @@
 #include <cugraph/legacy/graph.hpp>
 #include <cugraph/utilities/error.hpp>
 
-#include <raft/lap/lap.cuh>
+#include <raft/lap/lap.hpp>
 
 #include <rmm/cuda_stream_view.hpp>
 #include <rmm/device_uvector.hpp>
diff --git a/cpp/src/utilities/spmv_1D.cu b/cpp/src/utilities/spmv_1D.cu
index 5506d32f965..3ea7b3f256d 100644
--- a/cpp/src/utilities/spmv_1D.cu
+++ b/cpp/src/utilities/spmv_1D.cu
@@ -51,7 +51,7 @@ MGcsrmv<vertex_t, edge_t, weight_t>::~MGcsrmv()
 template <typename vertex_t, typename edge_t, typename weight_t>
 void MGcsrmv<vertex_t, edge_t, weight_t>::run(weight_t* x)
 {
-  using namespace raft::matrix;
+  using namespace raft::spectral::matrix;
 
   weight_t h_one  = 1.0;
   weight_t h_zero = 0.0;
@@ -64,11 +64,11 @@ void MGcsrmv<vertex_t, edge_t, weight_t>::run(weight_t* x)
                                           static_cast<vertex_t>(v_glob_),  // n_cols
                                           static_cast<vertex_t>(e_loc_)};  // nnz
 
-  mat.mv(h_one,                             // alpha
-         x,                                 // x
-         h_zero,                            // beta
-         y_loc_.data().get(),               // y
-         sparse_mv_alg_t::SPARSE_MV_ALG2);  // SpMV algorithm
+  mat.mv(h_one,                                                     // alpha
+         x,                                                         // x
+         h_zero,                                                    // beta
+         y_loc_.data().get(),                                       // y
+         raft::spectral::matrix::sparse_mv_alg_t::SPARSE_MV_ALG2);  // SpMV algorithm
 
   auto stream = handle_.get_stream();