diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 7a44948..288ceb1 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -4,22 +4,22 @@ fail_fast: false
 
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v5.0.0
+    rev: v6.0.0
     hooks:
       - id: end-of-file-fixer
       - id: trailing-whitespace
-  - repo: https://github.com/psf/black
-    rev: 24.8.0
+  - repo: https://github.com/psf/black-pre-commit-mirror
+    rev: 26.1.0
     hooks:
       - id: black
         args: [--line-length=128, --verbose]
   - repo: https://github.com/PyCQA/flake8
-    rev: 7.1.1
+    rev: 7.3.0
     hooks:
       - id: flake8
         args: [--max-line-length=128, '--exclude=./.*,build,dist,official*,torch_ecg,references,*.ipynb', '--ignore=E501,W503,E203,F841,E402,E231,E731', --count, --statistics, --show-source]
   - repo: https://github.com/pycqa/isort
-    rev: 5.13.2
+    rev: 7.0.0
     hooks:
       - id: isort
         args: [--profile=black, --line-length=128]
diff --git a/cfg.py b/cfg.py
index 8ba0aa0..685bc25 100644
--- a/cfg.py
+++ b/cfg.py
@@ -1,5 +1,4 @@
-"""
-"""
+""" """
 
 import os
 from copy import deepcopy
diff --git a/data_reader.py b/data_reader.py
index 95c6216..7623d7e 100644
--- a/data_reader.py
+++ b/data_reader.py
@@ -1,6 +1,5 @@
 # -*- coding: utf-8 -*-
-"""
-"""
+""" """
 
 import json
 import logging
diff --git a/dataset.py b/dataset.py
index 649a640..8735dc3 100644
--- a/dataset.py
+++ b/dataset.py
@@ -1252,14 +1252,10 @@ def _train_test_split(self, train_ratio: float = 0.8, force_recompute: bool = Fa
             with open(test_file_1, "w") as f1, open(test_file_2, "w") as f2:
                 json.dump(test_set, f1, ensure_ascii=False)
                 json.dump(test_set, f2, ensure_ascii=False)
-            print(
-                nildent(
-                    f"""
+            print(nildent(f"""
                 train set saved to \n\042{train_file_1}\042and\n\042{train_file_2}\042
                 test set saved to \n\042{test_file_1}\042and\n\042{test_file_2}\042
-                """
-                )
-            )
+                """))
         else:
             with open(train_file, "r") as f:
                 train_set = json.load(f)
diff --git a/gather_results.py b/gather_results.py
index db4ee70..35f48a5 100644
--- a/gather_results.py
+++ b/gather_results.py
@@ -1,5 +1,4 @@
-"""
-"""
+""" """
 
 import glob
 import json
diff --git a/sample_data/__init__.py b/sample_data/__init__.py
index daf2131..7d0f61f 100644
--- a/sample_data/__init__.py
+++ b/sample_data/__init__.py
@@ -1,5 +1,4 @@
-"""
-"""
+""" """
 
 import glob
 import os
diff --git a/test_entry.py b/test_entry.py
index 02a6375..e0ea602 100644
--- a/test_entry.py
+++ b/test_entry.py
@@ -1,5 +1,4 @@
-"""
-"""
+""" """
 
 import glob
 import os
diff --git a/trainer.py b/trainer.py
index 38bf605..ccbb440 100644
--- a/trainer.py
+++ b/trainer.py
@@ -1,5 +1,4 @@
-"""
-"""
+""" """
 
 import argparse
 import logging
@@ -149,8 +148,7 @@ def train(
         comment=f"OPT_{config.task}_{_model.__name__}{cnn_name}{rnn_name}{attn_name}_{config.train_optimizer}_LR_{lr}_BS_{batch_size}",
     )
 
-    msg = textwrap.dedent(
-        f"""
+    msg = textwrap.dedent(f"""
         Starting training:
         ------------------
         Task:            {config.task}
@@ -163,8 +161,7 @@ def train(
         Optimizer:       {config.train_optimizer}
         Dataset classes: {train_dataset.all_classes}
         ---------------------------------------------------
-        """
-    )
+        """)
 
     if logger:
         logger.info(msg)
@@ -347,15 +344,13 @@ def train(
             else:
                 eval_train_msg = ""
             for k, v in eval_res.items():
-                msg = textwrap.dedent(
-                    f"""
+                msg = textwrap.dedent(f"""
                     Train epoch_{epoch + 1}:
                     --------------------
                     train/epoch_loss:        {epoch_loss}{eval_train_msg}
                     test/task_metric_{k}:    {v}
                     ---------------------------------
-                    """
-                )
+                    """)
             if logger:
                 logger.info(msg)
             else:
@@ -378,12 +373,10 @@ def train(
                         print(msg)
                     break
 
-            msg = textwrap.dedent(
-                f"""
+            msg = textwrap.dedent(f"""
                 best metric = {best_metric},
                 obtained at epoch {best_epoch}
-            """
-            )
+            """)
             if logger:
                 logger.info(msg)
             else:
diff --git a/utils/__init__.py b/utils/__init__.py
index cd7d3cb..2de9e21 100644
--- a/utils/__init__.py
+++ b/utils/__init__.py
@@ -1,5 +1,4 @@
-"""
-"""
+""" """
 
 import os
 import sys
diff --git a/utils/misc.py b/utils/misc.py
index 9951486..b632a9b 100644
--- a/utils/misc.py
+++ b/utils/misc.py
@@ -1,5 +1,4 @@
-"""
-"""
+""" """
 
 import datetime
 import json
diff --git a/utils/scoring_metrics_test.py b/utils/scoring_metrics_test.py
index fd1b29d..16aee6e 100644
--- a/utils/scoring_metrics_test.py
+++ b/utils/scoring_metrics_test.py
@@ -1,5 +1,4 @@
-"""
-"""
+""" """
 
 import argparse
 import glob
@@ -165,14 +164,10 @@ def run_single_test(rec: str, classes: Optional[List[str]] = None, verbose: bool
         return
 
     print(f"  {os.path.basename(rec)} starts ".center(30, "-"))
-    print(
-        textwrap.dedent(
-            f"""
+    print(textwrap.dedent(f"""
         record = {os.path.basename(rec)},
         class = {header.comments[0]},
-        """
-        )
-    )
+        """))
 
     custom_onset_scoring_mask, custom_offset_scoring_mask = gen_endpoint_score_mask(
         siglen=header.sig_len,
diff --git a/utils/utils_interval.py b/utils/utils_interval.py
index 83eb024..406b213 100644
--- a/utils/utils_interval.py
+++ b/utils/utils_interval.py
@@ -10,6 +10,7 @@
     2. distinguish openness and closedness
 
 """
+
 import time
 from copy import deepcopy
 from numbers import Real