diff --git a/tests/unit/test_table.py b/tests/unit/test_table.py
index 22c7c048d..9bdd7b596 100644
--- a/tests/unit/test_table.py
+++ b/tests/unit/test_table.py
@@ -3486,7 +3486,11 @@ def test_to_dataframe_w_dtypes_mapper(self):
             create_bqstorage_client=False,
             bool_dtype=pandas.BooleanDtype(),
             int_dtype=pandas.Int32Dtype(),
-            float_dtype=pandas.StringDtype(),
+            float_dtype=(
+                pandas.Float64Dtype()
+                if hasattr(pandas, "Float64Dtype")
+                else pandas.StringDtype()
+            ),
             string_dtype=pandas.StringDtype(),
         )
 
@@ -3494,7 +3498,10 @@ def test_to_dataframe_w_dtypes_mapper(self):
         self.assertEqual(df.complete.dtype.name, "boolean")
         self.assertEqual(df.age.dtype.name, "Int32")
         self.assertEqual(df.seconds.dtype.name, "Int32")
-        self.assertEqual(df.miles.dtype.name, "string")
+        self.assertEqual(
+            df.miles.dtype.name,
+            "Float64" if hasattr(pandas, "Float64Dtype") else "string",
+        )
         self.assertEqual(df.name.dtype.name, "string")
 
     @unittest.skipIf(pandas is None, "Requires `pandas`")