diff --git a/participation/models.py b/participation/models.py
index c1f46e7..1406330 100644
--- a/participation/models.py
+++ b/participation/models.py
@@ -478,10 +478,11 @@ class Tournament(models.Model):
         if worksheet.index != self.pools.count():
             worksheet.update_index(self.pools.count())
 
-        header = [[_("Team"), _("Scores day 1"), _("Tweaks day 1"), _("Scores day 2"), _("Tweaks day 2")]
-                  + ([_("Total D1 + D2"), _("Scores day 3"), _("Tweaks day 3")]
+        header = [[str(_("Team")), str(_("Scores day 1")), str(_("Tweaks day 1")),
+                   str(_("Scores day 2")), str(_("Tweaks day 2"))]
+                  + ([str(_("Total D1 + D2")), str(_("Scores day 3")), str(_("Tweaks day 3"))]
                      if settings.NB_ROUNDS >= 3 else [])
-                  + [_("Total"), _("Rank")]]
+                  + [str(_("Total")), str(_("Rank"))]]
         lines = []
         participations = self.participations.filter(pools__round=1, pools__tournament=self).distinct().all()
         total_col, rank_col = ("F", "G") if settings.NB_ROUNDS == 2 else ("I", "J")
@@ -548,7 +549,8 @@ class Tournament(models.Model):
                         + (f" + (PI() - 2) * $G{i + 2} + $H{i + 2}" if settings.NB_ROUNDS >= 3 else ""))
             line.append(f"=RANG(${total_col}{i + 2}; ${total_col}$2:${total_col}${participations.count() + 1})")
 
-        final_ranking = [["", "", "", ""], ["", "", "", ""], [_("Team"), _("Score"), _("Rank"), _("Mention")],
+        final_ranking = [["", "", "", ""], ["", "", "", ""],
+                         [str(_("Team")), str(_("Score")), str(_("Rank")), str(_("Mention"))],
                          [f"=SORT($A$2:$A${participations.count() + 1}; "
                           f"${total_col}$2:${total_col}${participations.count() + 1}; FALSE)",
                           f"=SORT(${total_col}$2:${total_col}${participations.count() + 1}; "
@@ -1236,13 +1238,13 @@ class Pool(models.Model):
             sum(([f"{_('Defender')} ({passage.defender.team.trigram})", "",
                   f"{_('Opponent')} ({passage.opponent.team.trigram})", "",
                   f"{_('Reviewer')} ({passage.reviewer.team.trigram})", ""]
-                 + ([f"{('Observer')} ({passage.observer.team.trigram})", ""] if has_observer else [])
-                 for passage in passages), start=["Rôle", ""]),
+                 + ([f"{'Observer'} ({passage.observer.team.trigram})", ""] if has_observer else [])
+                 for passage in passages), start=[str(_("Role")), ""]),
             sum(([f"{_('Writing')} (/{20 if settings.TFJM_APP == "TFJM" else 10})",
                   f"{_('Oral')} (/{20 if settings.TFJM_APP == 'TFJM' else 10})"
                   f"{_('Writing')} (/10)", f"{_('Oral')} (/10)", f"{_('Writing')} (/10)", f"{_('Oral')} (/10)"]
                  + ([f"{_('Writing')} (/10)", f"{_('Oral')} (/10)"] if has_observer else [])
-                 for _passage in passages), start=[_("Juree"), ""]),
+                 for _passage in passages), start=[str(_("Juree")), ""]),
         ]
 
         notes = [[]]  # Begin with empty hidden line to ensure pretty design
@@ -1265,14 +1267,14 @@ class Pool(models.Model):
                 return ''
             return getcol((number - 1) // 26) + chr(65 + (number - 1) % 26)
 
-        average = [_("Average"), ""]
+        average = [str(_("Average")), ""]
         coeffs = sum(([passage.coeff_defender_writing, passage.coeff_defender_oral,
                        passage.coeff_opponent_writing, passage.coeff_opponent_oral,
                        passage.coeff_reviewer_writing, passage.coeff_reviewer_oral]
                       + ([passage.coeff_observer_writing, passage.coeff_observer_oral] if has_observer else [])
                       for passage in passages),
-                     start=[_("Coefficient"), ""])
-        subtotal = [_("Subtotal"), ""]
+                     start=[str(_("Coefficient")), ""])
+        subtotal = [str(_("Subtotal")), ""]
         footer = [average, coeffs, subtotal, 34 * [""]]
 
         min_row = 5
@@ -1306,7 +1308,7 @@ class Pool(models.Model):
                                  f" + {obs_o_col}{max_row + 1} * {obs_o_col}{max_row + 2}", ""])
 
         ranking = [
-            [_("Team"), "", _("Problem"), _("Total"), _("Rank")],
+            [str(_("Team")), "", str(_("Problem")), str(_("Total")), str(_("Rank"))],
         ]
         all_passages = Passage.objects.filter(pool__tournament=self.tournament,
                                               pool__round=self.round,
@@ -1353,7 +1355,7 @@ class Pool(models.Model):
         all_values = header + notes + footer + ranking
 
         worksheet.batch_clear([f"A1:AH{max_row + 5 + pool_size}"])
-        worksheet.update("A1:AH", all_values, raw=False)
+        worksheet.update(all_values, "A1:AH", raw=False)
 
         format_requests = []