diff --git a/tiled/client/dataframe.py b/tiled/client/dataframe.py
index 7c533cabd..794c7fde1 100644
--- a/tiled/client/dataframe.py
+++ b/tiled/client/dataframe.py
@@ -221,15 +221,6 @@ def write_partition(self, dataframe, partition):
             )
         )
 
-    def append_partition(self, dataframe, partition):
-        handle_error(
-            self.context.http_client.patch(
-                self.item["links"]["partition"].format(index=partition),
-                content=bytes(serialize_arrow(dataframe, {})),
-                headers={"Content-Type": APACHE_ARROW_FILE_MIME_TYPE},
-            )
-        )
-
     def export(self, filepath, columns=None, *, format=None):
         """
         Download data in some format and write to a file.