diff --git a/ci/test_python.sh b/ci/test_python.sh
index 5892c37e35b..2b8a6347066 100755
--- a/ci/test_python.sh
+++ b/ci/test_python.sh
@@ -63,7 +63,16 @@ pytest \
   tests
 popd
 
-# FIXME: TEMPORARILY disable single-GPU "MG" testing
+# Test runs that include tests that use dask require
+# --import-mode=append. Those tests start a LocalCUDACluster that inherits
+# changes from pytest's modifications to PYTHONPATH (which defaults to
+# prepending source tree paths to PYTHONPATH).  This causes the
+# LocalCUDACluster subprocess to import cugraph from the source tree instead of
+# the install location, and in most cases, the source tree does not have
+# extensions built in-place and will result in ImportErrors.
+#
+# FIXME: TEMPORARILY disable MG PropertyGraph tests (experimental) tests and
+# bulk sampler IO tests (hangs in CI)
 rapids-logger "pytest cugraph"
 pushd python/cugraph/cugraph
 DASK_WORKER_DEVICES="0" \
@@ -72,6 +81,7 @@ DASK_DISTRIBUTED__COMM__TIMEOUTS__CONNECT="1000s" \
 DASK_CUDA_WAIT_WORKERS_MIN_TIMEOUT="1000s" \
 pytest \
   -v \
+  --import-mode=append \
   --benchmark-disable \
   --cache-clear \
   --junitxml="${RAPIDS_TESTS_DIR}/junit-cugraph.xml" \
@@ -79,7 +89,7 @@ pytest \
   --cov=cugraph \
   --cov-report=xml:"${RAPIDS_COVERAGE_DIR}/cugraph-coverage.xml" \
   --cov-report=term \
-  -k "not test_property_graph_mg" \
+  -k "not test_property_graph_mg and not test_bulk_sampler_io" \
   tests
 popd
 
diff --git a/ci/test_wheel.sh b/ci/test_wheel.sh
index 428efd4ed21..8c5832e412f 100755
--- a/ci/test_wheel.sh
+++ b/ci/test_wheel.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
-# Copyright (c) 2023, NVIDIA CORPORATION.
+# Copyright (c) 2023-2024, NVIDIA CORPORATION.
 
 set -eoxu pipefail
 
@@ -21,10 +21,21 @@ arch=$(uname -m)
 if [[ "${arch}" == "aarch64" && ${RAPIDS_BUILD_TYPE} == "pull-request" ]]; then
     python ./ci/wheel_smoke_test_${package_name}.py
 else
-    # FIXME: TEMPORARILY disable single-GPU "MG" testing
+    # Test runs that include tests that use dask require
+    # --import-mode=append. See test_python.sh for details.
+    # FIXME: Adding PY_IGNORE_IMPORTMISMATCH=1 to workaround conftest.py import
+    # mismatch error seen by nx-cugraph after using pytest 8 and
+    # --import-mode=append.
     RAPIDS_DATASET_ROOT_DIR=`pwd`/datasets \
+    PY_IGNORE_IMPORTMISMATCH=1 \
+    DASK_WORKER_DEVICES="0" \
     DASK_DISTRIBUTED__SCHEDULER__WORKER_TTL="1000s" \
     DASK_DISTRIBUTED__COMM__TIMEOUTS__CONNECT="1000s" \
     DASK_CUDA_WAIT_WORKERS_MIN_TIMEOUT="1000s" \
-    python -m pytest ./python/${package_name}/${python_package_name}/tests
+    python -m pytest \
+       -v \
+       --import-mode=append \
+       --benchmark-disable \
+       -k "not test_property_graph_mg and not test_bulk_sampler_io" \
+       ./python/${package_name}/${python_package_name}/tests
 fi
diff --git a/cpp/cmake/thirdparty/get_raft.cmake b/cpp/cmake/thirdparty/get_raft.cmake
index 015b5b07920..8f56372c81a 100644
--- a/cpp/cmake/thirdparty/get_raft.cmake
+++ b/cpp/cmake/thirdparty/get_raft.cmake
@@ -1,5 +1,5 @@
 #=============================================================================
-# Copyright (c) 2022-2023, NVIDIA CORPORATION.
+# Copyright (c) 2022-2024, NVIDIA CORPORATION.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -52,6 +52,7 @@ function(find_and_configure_raft)
                 "RAFT_COMPILE_LIBRARY ${PKG_COMPILE_RAFT_LIB}"
                 "BUILD_TESTS OFF"
                 "BUILD_BENCH OFF"
+                "BUILD_CAGRA_HNSWLIB OFF"
     )
 
     if(raft_ADDED)
diff --git a/python/nx-cugraph/nx_cugraph/interface.py b/python/nx-cugraph/nx_cugraph/interface.py
index 04591c0e9e3..a57074aabb0 100644
--- a/python/nx-cugraph/nx_cugraph/interface.py
+++ b/python/nx-cugraph/nx_cugraph/interface.py
@@ -80,18 +80,26 @@ def key(testpath):
         nxver = parse(nx.__version__)
 
         if nxver.major == 3 and nxver.minor <= 2:
-            # Networkx versions prior to 3.2.1 have tests written to expect
-            # sp.sparse.linalg.ArpackNoConvergence exceptions raised on no
-            # convergence in HITS. Newer versions since the merge of
-            # https://github.com/networkx/networkx/pull/7084 expect
-            # nx.PowerIterationFailedConvergence, which is what nx_cugraph.hits
-            # raises, so we mark them as xfail for previous versions of NX.
             xfail.update(
                 {
+                    # NetworkX versions prior to 3.2.1 have tests written to
+                    # expect sp.sparse.linalg.ArpackNoConvergence exceptions
+                    # raised on no convergence in HITS. Newer versions since
+                    # the merge of
+                    # https://github.com/networkx/networkx/pull/7084 expect
+                    # nx.PowerIterationFailedConvergence, which is what
+                    # nx_cugraph.hits raises, so we mark them as xfail for
+                    # previous versions of NX.
                     key(
                         "test_hits.py:TestHITS.test_hits_not_convergent"
                     ): "nx_cugraph.hits raises updated exceptions not caught in "
                     "these tests",
+                    # NetworkX versions 3.2 and older contain tests that fail
+                    # with pytest>=8. Assume pytest>=8 and mark xfail.
+                    key(
+                        "test_strongly_connected.py:"
+                        "TestStronglyConnected.test_connected_raise"
+                    ): "test is incompatible with pytest>=8",
                 }
             )