diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index bf2ea477..3330c2b9 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -39,7 +39,7 @@ repos:
     - id: seed-isort-config
 
 - repo: https://github.com/psf/black
-  rev: 23.12.1
+  rev: 24.1.1
   hooks:
   - id: black
     language_version: python3
diff --git a/xmip/drift_removal.py b/xmip/drift_removal.py
index a57f9acb..c1a919cd 100644
--- a/xmip/drift_removal.py
+++ b/xmip/drift_removal.py
@@ -364,9 +364,9 @@ def remove_trend(ds, ds_slope, variable, ref_date, check_mask=True):
             "`ds_slope` did not have information about the time over which the slope was calculated. Check the input."
         )
 
-    detrended.attrs[
-        "drift_removed"
-    ] = f"linear_trend_{cmip6_dataset_id(ds_slope)}_{trend_start}_{trend_stop}"
+    detrended.attrs["drift_removed"] = (
+        f"linear_trend_{cmip6_dataset_id(ds_slope)}_{trend_start}_{trend_stop}"
+    )
 
     return detrended
 
diff --git a/xmip/postprocessing.py b/xmip/postprocessing.py
index 36a8eaca..704d7476 100644
--- a/xmip/postprocessing.py
+++ b/xmip/postprocessing.py
@@ -595,9 +595,9 @@ def _parse_metric(ds, metric, dim_length_conflict="error"):
     metric_stripped = metric.reset_coords(drop=True)
 
     # add attributes
-    metric_stripped.attrs[
-        "parsed_with"
-    ] = f"xmip/postprocessing/{inspect.currentframe().f_code.co_name}"
+    metric_stripped.attrs["parsed_with"] = (
+        f"xmip/postprocessing/{inspect.currentframe().f_code.co_name}"
+    )
     # TODO: Get the package and module name without hardcoding.
 
     ds = ds.assign_coords({metric_stripped.name: metric_stripped})