diff --git a/python/docs/source/conf.py b/python/docs/source/conf.py
index 72a6cd929d..c11b808659 100644
--- a/python/docs/source/conf.py
+++ b/python/docs/source/conf.py
@@ -66,6 +66,7 @@ def get_release_version() -> str:
     ("py:class", "pyarrow._dataset_parquet.ParquetFileWriteOptions"),
     ("py:class", "pathlib.Path"),
     ("py:class", "datetime.datetime"),
+    ("py:class", "datetime.timedelta"),
 ]
 
 # Add any paths that contain templates here, relative to this directory.