diff --git a/raster_geometry/raster.py b/raster_geometry/raster.py
index 223d67a..cc38e40 100755
--- a/raster_geometry/raster.py
+++ b/raster_geometry/raster.py
@@ -2457,7 +2457,7 @@ def multi_render(
         n_dim=None,
         affine_kws=(('order', 0),),
         smoothing=False,
-        dtype=np.float_):
+        dtype=np.float64):
     """
     Render multiple geometrical objects into a single array.