diff --git a/tests/test_boost.py b/tests/test_boost.py
index 7ee5d44..352205a 100644
--- a/tests/test_boost.py
+++ b/tests/test_boost.py
@@ -568,6 +568,7 @@ def test_boost_output_pickles():
     o = dask.compute(h)
     pickle.dumps(o)
 
+
 def test_155_boost_factory():
     import boost_histogram as bh
     import dask_awkward as dak
@@ -576,9 +577,9 @@ def test_155_boost_factory():
     import dask_histogram as dh
 
     arr = dak.from_lists([list(range(10))] * 3)
-    axis = bh.axis.Regular(10, 0., 10.)
+    axis = bh.axis.Regular(10, 0.0, 10.0)
     hist = dh.factory(
         arr,
         axes=(axis,),
     ).compute()
-    assert np.all(hist.values() == [3., 3., 3., 3., 3., 3., 3., 3., 3., 3.])
+    assert np.all(hist.values() == [3.0, 3.0, 3.0, 3.0, 3.0, 3.0, 3.0, 3.0, 3.0, 3.0])