diff --git a/audio/audiotools/post.py b/audio/audiotools/post.py
index 7e950892f..f913d1000 100644
--- a/audio/audiotools/post.py
+++ b/audio/audiotools/post.py
@@ -41,11 +41,13 @@ import tempfile
 import typing
 import zipfile
 from pathlib import Path
+from typing import TYPE_CHECKING
 
+if TYPE_CHECKING:
+    from audiotools import AudioSignal
 import markdown2 as md
 import matplotlib.pyplot as plt
 import paddle
-from audiotools import AudioSignal
 from IPython.display import HTML