diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 6d251309fb8..4df32d4d291 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,7 +1,7 @@
 repos:
   # Ruff mne
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.14.14
+    rev: v0.15.0
     hooks:
       - id: ruff-check
         name: ruff lint mne
diff --git a/mne/io/hitachi/hitachi.py b/mne/io/hitachi/hitachi.py
index 9d8e27ba20d..69912a11ea1 100644
--- a/mne/io/hitachi/hitachi.py
+++ b/mne/io/hitachi/hitachi.py
@@ -122,10 +122,12 @@ def _read_segment_file(self, data, idx, fi, start, stop, cals, mult):
                     this_probe["keep_mask"],
                     this_probe["bounds"],
                     sep=",",
-                    replace=lambda x: x.replace("\r", "\n")
-                    .replace("\n\n", "\n")
-                    .replace("\n", ",")
-                    .replace(":", ""),
+                    replace=lambda x: (
+                        x.replace("\r", "\n")
+                        .replace("\n\n", "\n")
+                        .replace("\n", ",")
+                        .replace(":", "")
+                    ),
                 ).T
             )
         this_data = np.concatenate(this_data, axis=0)