diff --git a/dcs/frames/__init__.py b/dcs/frames/__init__.py
index 754ba8e..a1a8023 100644
--- a/dcs/frames/__init__.py
+++ b/dcs/frames/__init__.py
@@ -21,6 +21,7 @@
 from .ch06_filter import Ch06FilterWindow
 from .ch06_mixer import Ch06MixerWindow
 from .ch06_down_sampling import Ch06DownSamplingWindow
+from .ch06_up_sampling import Ch06UpSamplingWindow
 
 
 def get_windows() -> List[Type[base.Window]]:
@@ -39,6 +40,7 @@
         Ch06FilterWindow,
         Ch06MixerWindow,
         Ch06DownSamplingWindow,
+        Ch06UpSamplingWindow,
     ]