diff --git a/nipype/interfaces/ants/legacy.py b/nipype/interfaces/ants/legacy.py
index 3019f27c22..f545f3ed08 100644
--- a/nipype/interfaces/ants/legacy.py
+++ b/nipype/interfaces/ants/legacy.py
@@ -129,8 +129,8 @@ class GenWarpFields(antsIntroduction):
 
 
 class buildtemplateparallelInputSpec(ANTSCommandInputSpec):
-    dimension = traits.Enum(3, 2, argstr='-d %d', usedefault=True,
-                            desc='image dimension (2 or 3)', position=1)
+    dimension = traits.Enum(3, 2, 4, argstr='-d %d', usedefault=True,
+                            desc='image dimension (2, 3 or 4)', position=1)
     out_prefix = traits.Str('antsTMPL_', argstr='-o %s', usedefault=True,
                             desc=('Prefix that is prepended to all output '
                                   'files (default = antsTMPL_)'))
diff --git a/nipype/interfaces/ants/segmentation.py b/nipype/interfaces/ants/segmentation.py
index aff6f2c6c0..042303227a 100644
--- a/nipype/interfaces/ants/segmentation.py
+++ b/nipype/interfaces/ants/segmentation.py
@@ -238,9 +238,9 @@ def _list_outputs(self):
 
 
 class N4BiasFieldCorrectionInputSpec(ANTSCommandInputSpec):
-    dimension = traits.Enum(3, 2, argstr='-d %d',
+    dimension = traits.Enum(3, 2, 4, argstr='-d %d',
                             usedefault=True,
-                            desc='image dimension (2 or 3)')
+                            desc='image dimension (2, 3 or 4)')
     input_image = File(argstr='--input-image %s', mandatory=True,
                        desc=('image to apply transformation to (generally a '
                              'coregistered functional)'))