diff --git a/benchmarks/kmeans/consolidate_result_csv.py b/benchmarks/kmeans/consolidate_result_csv.py
index 00ef838..81e9a50 100644
--- a/benchmarks/kmeans/consolidate_result_csv.py
+++ b/benchmarks/kmeans/consolidate_result_csv.py
@@ -2,7 +2,6 @@
 from functools import partial
 from io import BytesIO
 from itertools import zip_longest
-from operator import attrgetter
 
 import numpy as np
 import pandas as pd
@@ -403,7 +402,7 @@ def _gspread_sync(source, gspread_url, gspread_auth_key):
         )
         # ensure worksheets are sorted anti-alphabetically
         sheet.reorder_worksheets(
-            sorted(sheet.worksheets(), key=attrgetter("title"), reverse=True)
+            sorted(sheet.worksheets(), key=lambda worksheet: worksheet.title.lower())
         )
 
     # upload all values
diff --git a/benchmarks/pca/consolidate_result_csv.py b/benchmarks/pca/consolidate_result_csv.py
index e4e1a3f..fc34b3f 100644
--- a/benchmarks/pca/consolidate_result_csv.py
+++ b/benchmarks/pca/consolidate_result_csv.py
@@ -2,7 +2,6 @@
 from functools import partial
 from io import BytesIO
 from itertools import zip_longest
-from operator import attrgetter
 
 import numpy as np
 import pandas as pd
@@ -401,7 +400,7 @@ def _gspread_sync(source, gspread_url, gspread_auth_key):
         )
         # ensure worksheets are sorted anti-alphabetically
         sheet.reorder_worksheets(
-            sorted(sheet.worksheets(), key=attrgetter("title"), reverse=True)
+            sorted(sheet.worksheets(), key=lambda worksheet: worksheet.title.lower())
         )
 
     # upload all values
diff --git a/benchmarks/ridge/consolidate_result_csv.py b/benchmarks/ridge/consolidate_result_csv.py
index fd5cc2f..a991669 100644
--- a/benchmarks/ridge/consolidate_result_csv.py
+++ b/benchmarks/ridge/consolidate_result_csv.py
@@ -407,9 +407,7 @@ def _gspread_sync(source, gspread_url, gspread_auth_key):
             GOOGLE_WORKSHEET_NAME, rows=n_rows + 1, cols=n_cols
         )
         # ensure worksheets are sorted anti-alphabetically
-        sheet.reorder_worksheets(
-            sorted(sheet.worksheets(), key=attrgetter("title"), reverse=True)
-        )
+        sheet.reorder_worksheets(sorted(sheet.worksheets(), key=attrgetter("title")))
 
     # upload all values
     worksheet.update(