diff --git a/diary.md b/diary.md
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--- a/diary.md
+++ b/diary.md
@@ -1,5 +1,6 @@
 ## Sun 09 Mar 2025
 - Optimise `permanent_data.py` with better batched uploading and asynchronous API calls.
+- Optimise `transient_data.py` with better batched uploading and asynchronous API calls.
 
 ## Sat 08 Mar 2025
 - Make CSS more responsive for smaller screens.