diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index e90585159..e2f93d05c 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -21,7 +21,7 @@ repos:
       - id: pyupgrade
         args: [--py37-plus]
   - repo: https://github.com/psf/black
-    rev: 23.12.1
+    rev: 24.1.1
     hooks:
       - id: black
   - repo: https://github.com/PyCQA/flake8
diff --git a/finrl/agents/elegantrl/models.py b/finrl/agents/elegantrl/models.py
index 5e6cd56d4..e0b45cb54 100644
--- a/finrl/agents/elegantrl/models.py
+++ b/finrl/agents/elegantrl/models.py
@@ -1,6 +1,7 @@
 """
 DRL models from ElegantRL: https://github.com/AI4Finance-Foundation/ElegantRL
 """
+
 from __future__ import annotations
 
 import torch
diff --git a/finrl/agents/portfolio_optimization/models.py b/finrl/agents/portfolio_optimization/models.py
index d1a07cc90..a2c0c01ca 100644
--- a/finrl/agents/portfolio_optimization/models.py
+++ b/finrl/agents/portfolio_optimization/models.py
@@ -2,6 +2,7 @@
 DRL models to solve the portfolio optimization task with reinforcement learning.
 This agent was developed to work with environments like PortfolioOptimizationEnv.
 """
+
 from __future__ import annotations
 
 from .algorithms import PolicyGradient
diff --git a/finrl/meta/data_processors/processor_yahoofinance.py b/finrl/meta/data_processors/processor_yahoofinance.py
index 3f9128c85..bb66b9a94 100644
--- a/finrl/meta/data_processors/processor_yahoofinance.py
+++ b/finrl/meta/data_processors/processor_yahoofinance.py
@@ -1,4 +1,5 @@
 """Reference: https://github.com/AI4Finance-LLC/FinRL"""
+
 from __future__ import annotations
 
 import datetime
diff --git a/finrl/meta/env_portfolio_optimization/env_portfolio_optimization.py b/finrl/meta/env_portfolio_optimization/env_portfolio_optimization.py
index 533d56ce5..85355fb4a 100644
--- a/finrl/meta/env_portfolio_optimization/env_portfolio_optimization.py
+++ b/finrl/meta/env_portfolio_optimization/env_portfolio_optimization.py
@@ -1,4 +1,5 @@
 """From FinRL https://github.com/AI4Finance-LLC/FinRL/tree/master/finrl/env"""
+
 from __future__ import annotations
 
 import math
diff --git a/finrl/meta/preprocessor/tusharedownloader.py b/finrl/meta/preprocessor/tusharedownloader.py
index 12941b041..1c271a937 100644
--- a/finrl/meta/preprocessor/tusharedownloader.py
+++ b/finrl/meta/preprocessor/tusharedownloader.py
@@ -1,6 +1,7 @@
 """Contains methods and classes to collect data from
 tushare API
 """
+
 from __future__ import annotations
 
 import pandas as pd
diff --git a/finrl/meta/preprocessor/yahoodownloader.py b/finrl/meta/preprocessor/yahoodownloader.py
index 66eb0c2e3..cfefd7f4c 100644
--- a/finrl/meta/preprocessor/yahoodownloader.py
+++ b/finrl/meta/preprocessor/yahoodownloader.py
@@ -1,6 +1,7 @@
 """Contains methods and classes to collect data from
 Yahoo Finance API
 """
+
 from __future__ import annotations
 
 import pandas as pd