diff --git a/src/zennit/types.py b/src/zennit/types.py
index 76cf78e..33cdd30 100644
--- a/src/zennit/types.py
+++ b/src/zennit/types.py
@@ -17,7 +17,7 @@
 # along with this library. If not, see <https://www.gnu.org/licenses/>.
 '''Type definitions for convenience.'''
 import torch
-
+import torchvision
 
 class SubclassMeta(type):
     '''Meta class to bundle multiple subclasses.'''
@@ -71,6 +71,7 @@ class BatchNorm(metaclass=SubclassMeta):
         torch.nn.modules.batchnorm.BatchNorm1d,
         torch.nn.modules.batchnorm.BatchNorm2d,
         torch.nn.modules.batchnorm.BatchNorm3d,
+        torchvision.ops.FrozenBatchNorm2d,
     )