diff --git a/dask_cuda/tests/test_spill.py b/dask_cuda/tests/test_spill.py
index 0b3ec54e..5b62406d 100644
--- a/dask_cuda/tests/test_spill.py
+++ b/dask_cuda/tests/test_spill.py
@@ -89,7 +89,7 @@ def delayed_worker_assert(total_size, device_chunk_overhead, serialized_chunk_ov
             "memory_limit": int(800e6),
             "host_target": 0.0,
             "host_spill": 0.0,
-            "host_pause": None,
+            "host_pause": 0.0,
             "spills_to_disk": False,
         },
         {
@@ -97,7 +97,7 @@ def delayed_worker_assert(total_size, device_chunk_overhead, serialized_chunk_ov
             "memory_limit": int(200e6),
             "host_target": 0.0,
             "host_spill": 0.0,
-            "host_pause": None,
+            "host_pause": 0.0,
             "spills_to_disk": True,
         },
         {
@@ -105,7 +105,7 @@ def delayed_worker_assert(total_size, device_chunk_overhead, serialized_chunk_ov
             "memory_limit": 0,
             "host_target": 0.0,
             "host_spill": 0.0,
-            "host_pause": None,
+            "host_pause": 0.0,
             "spills_to_disk": False,
         },
     ],
@@ -167,7 +167,7 @@ def test_device_spill(client, scheduler, worker):
             "memory_limit": int(800e6),
             "host_target": 0.0,
             "host_spill": 0.0,
-            "host_pause": None,
+            "host_pause": 0.0,
             "spills_to_disk": False,
         },
         {
@@ -175,7 +175,7 @@ def test_device_spill(client, scheduler, worker):
             "memory_limit": int(200e6),
             "host_target": 0.0,
             "host_spill": 0.0,
-            "host_pause": None,
+            "host_pause": 0.0,
             "spills_to_disk": True,
         },
         {
@@ -183,7 +183,7 @@ def test_device_spill(client, scheduler, worker):
             "memory_limit": 0,
             "host_target": 0.0,
             "host_spill": 0.0,
-            "host_pause": None,
+            "host_pause": 0.0,
             "spills_to_disk": False,
         },
     ],
@@ -243,7 +243,7 @@ async def test_cupy_cluster_device_spill(params):
             "memory_limit": int(800e6),
             "host_target": 0.0,
             "host_spill": 0.0,
-            "host_pause": None,
+            "host_pause": 0.0,
             "spills_to_disk": False,
         },
         {
@@ -251,7 +251,7 @@ async def test_cupy_cluster_device_spill(params):
             "memory_limit": int(200e6),
             "host_target": 0.0,
             "host_spill": 0.0,
-            "host_pause": None,
+            "host_pause": 0.0,
             "spills_to_disk": True,
         },
         {
@@ -259,7 +259,7 @@ async def test_cupy_cluster_device_spill(params):
             "memory_limit": 0,
             "host_target": 0.0,
             "host_spill": 0.0,
-            "host_pause": None,
+            "host_pause": 0.0,
             "spills_to_disk": False,
         },
     ],
@@ -332,7 +332,7 @@ def test_device_spill(client, scheduler, worker):
             "memory_limit": int(800e6),
             "host_target": 0.0,
             "host_spill": 0.0,
-            "host_pause": None,
+            "host_pause": 0.0,
             "spills_to_disk": False,
         },
         {
@@ -340,7 +340,7 @@ def test_device_spill(client, scheduler, worker):
             "memory_limit": int(200e6),
             "host_target": 0.0,
             "host_spill": 0.0,
-            "host_pause": None,
+            "host_pause": 0.0,
             "spills_to_disk": True,
         },
         {
@@ -348,7 +348,7 @@ def test_device_spill(client, scheduler, worker):
             "memory_limit": 0,
             "host_target": 0.0,
             "host_spill": 0.0,
-            "host_pause": None,
+            "host_pause": 0.0,
             "spills_to_disk": False,
         },
     ],