diff --git a/torchvision/ops/__init__.py b/torchvision/ops/__init__.py
index a047f26c321..0acd5fe990f 100644
--- a/torchvision/ops/__init__.py
+++ b/torchvision/ops/__init__.py
@@ -24,6 +24,7 @@
 
 
 __all__ = [
+    "masks_to_boxes",
     "deform_conv2d",
     "DeformConv2d",
     "nms",