diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 7b5c4676..12ecdfaa 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -7,11 +7,11 @@ default_stages:
 minimum_pre_commit_version: 2.16.0
 repos:
     - repo: https://github.com/biomejs/pre-commit
-      rev: v2.3.10
+      rev: v2.4.6
       hooks:
           - id: biome-format
     - repo: https://github.com/astral-sh/ruff-pre-commit
-      rev: v0.14.11
+      rev: v0.15.5
       hooks:
           - id: ruff-check
             args: [--fix, --exit-non-zero-on-fix, --unsafe-fixes]
diff --git a/biomni/tool/cancer_biology.py b/biomni/tool/cancer_biology.py
index c512bbea..4824a271 100644
--- a/biomni/tool/cancer_biology.py
+++ b/biomni/tool/cancer_biology.py
@@ -1233,8 +1233,9 @@ def norm_chr(x):
                     r_end = r["end"]
                     r_start = r["start"]
                     overlaps["ov_len"] = overlaps.apply(
-                        lambda row, r_end=r_end, r_start=r_start: min(row[end_col], r_end)
-                        - max(row[start_col], r_start),
+                        lambda row, r_end=r_end, r_start=r_start: (
+                            min(row[end_col], r_end) - max(row[start_col], r_start)
+                        ),
                         axis=1,
                     )
                     best = overlaps.sort_values("ov_len", ascending=False).iloc[0]