diff --git a/pandas/core/strings/accessor.py b/pandas/core/strings/accessor.py
index b9f3cd137bf82..ff3a17e4d2d5b 100644
--- a/pandas/core/strings/accessor.py
+++ b/pandas/core/strings/accessor.py
@@ -334,7 +334,7 @@ def _wrap_result(
                 )
                 result = {
                     label: ArrowExtensionArray(pa.array(res))
-                    for label, res in zip(name, result.T)
+                    for label, res in zip(name, result.T, strict=True)
                 }
             elif is_object_dtype(result):
 
@@ -684,7 +684,8 @@ def cat(
         elif na_rep is not None and union_mask.any():
             # fill NaNs with na_rep in case there are actually any NaNs
             all_cols = [
-                np.where(nm, na_rep, col) for nm, col in zip(na_masks, all_cols)
+                np.where(nm, na_rep, col)
+                for nm, col in zip(na_masks, all_cols, strict=True)
             ]
             result = cat_safe(all_cols, sep)
         else:
diff --git a/pyproject.toml b/pyproject.toml
index 7e17d507087e7..b570a7c1ff26c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -470,7 +470,6 @@ exclude = [
 "pandas/core/reshape/merge.py" = ["B905"]
 "pandas/core/reshape/pivot.py" = ["B905"]
 "pandas/core/reshape/reshape.py" = ["B905"]
-"pandas/core/strings/accessor.py" = ["B905"]
 "pandas/core/window/rolling.py" = ["B905"]
 "pandas/_testing/asserters.py" = ["B905"]
 "pandas/_testing/_warnings.py" = ["B905"]