diff --git a/fmriprep/utils/transforms.py b/fmriprep/utils/transforms.py
index 0210f90f..7b36eb35 100644
--- a/fmriprep/utils/transforms.py
+++ b/fmriprep/utils/transforms.py
@@ -71,7 +71,10 @@ def load_ants_h5(filename: Path) -> nt.base.TransformBase:
     transform2 = h['TransformGroup']['2']
 
     # Confirm these transformations are applicable
-    if transform2['TransformType'][:][0] != b'DisplacementFieldTransform_float_3_3':
+    if transform2['TransformType'][:][0] not in (
+        b'DisplacementFieldTransform_float_3_3',
+        b'DisplacementFieldTransform_double_3_3',
+    ):
         msg = 'Unknown transform type [2]\n'
         for i in h['TransformGroup'].keys():
             msg += f'[{i}]: {h["TransformGroup"][i]["TransformType"][:][0]}\n'