diff --git a/TODO.txt b/TODO.txt
index f8f67c1..3d20333 100644
--- a/TODO.txt
+++ b/TODO.txt
@@ -1,3 +1,4 @@
 [ ] Add log compaction
 [ ] Add log persistence
-[ ] Add chunk locations to metadata
\ No newline at end of file
+[ ] Add chunk locations to metadata
+[ ] fsync parent directory when renaming log
\ No newline at end of file
diff --git a/src/wal.c b/src/wal.c
index ae7cc24..ad2b09d 100644
--- a/src/wal.c
+++ b/src/wal.c
@@ -266,6 +266,8 @@ int wal_replace(WAL *wal, WALEntry *entries, int count)
     if (rename_file_or_dir(tmp_path, wal_path) < 0)
         return -1;
 
+    // TODO: fsync on parent directory
+
     // Reopen the WAL file and seek to end for future appends.
     Handle new_handle;
     if (file_open(wal_path, &new_handle) < 0)