diff --git a/diary.md b/diary.md
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@@ -1,3 +1,6 @@
+## Sun 09 Mar 2025
+- Optimise `permanent_data.py` with better batched uploading and asynchronous API calls.
+
 ## Sat 08 Mar 2025
 - Make CSS more responsive for smaller screens.
 - Make `return_all_data` accept a list of `objectType`s.