diff --git a/martin_binance/__init__.py b/martin_binance/__init__.py
index d948a4b..55a5cb3 100644
--- a/martin_binance/__init__.py
+++ b/martin_binance/__init__.py
@@ -6,7 +6,7 @@
 __author__ = "Jerry Fedorenko"
 __copyright__ = "Copyright © 2021 Jerry Fedorenko aka VM"
 __license__ = "MIT"
-__version__ = "1.3.1b5"
+__version__ = "1.3.1"
 __maintainer__ = "Jerry Fedorenko"
 __contact__ = "https://github.com/DogsTailFarmer"
 
@@ -30,6 +30,7 @@
     LAST_STATE_PATH = None
     BACKTEST_PATH = None
 
+
 def init():
     if CONFIG_FILE.exists():
         print(f"Client config found at {CONFIG_FILE}")
@@ -52,4 +53,4 @@ def init():
 
 
 if __name__ == '__main__':
-    init()
\ No newline at end of file
+    init()
diff --git a/martin_binance/backtest/OoTSP.py b/martin_binance/backtest/OoTSP.py
index 39190bc..ffeebd1 100644
--- a/martin_binance/backtest/OoTSP.py
+++ b/martin_binance/backtest/OoTSP.py
@@ -6,7 +6,7 @@
 __author__ = "Jerry Fedorenko"
 __copyright__ = "Copyright © 2021 Jerry Fedorenko aka VM"
 __license__ = "MIT"
-__version__ = "1.3.1b5"
+__version__ = "1.3.1"
 __maintainer__ = "Jerry Fedorenko"
 __contact__ = "https://github.com/DogsTailFarmer"
 
@@ -21,6 +21,7 @@
 
 PARAMS_FLOAT = ['PRICE_SHIFT', 'KBB']
 
+
 def try_trade(mbs, **kwargs):
     for key, value in kwargs.items():
         print(key, value)
@@ -64,7 +65,7 @@ def objective(trial):
             message="Enter number of cycles, from 50 to 500",
             ignore=lambda x: x["mode"] == "Plot from saved",
             default='150',
-            validate=lambda _, c: 2 <= int(c) < 500,
+            validate=lambda _, c: 10 <= int(c) < 500,
         ),
     ]
 
diff --git a/martin_binance/executor.py b/martin_binance/executor.py
index a7cb1dd..43ef175 100644
--- a/martin_binance/executor.py
+++ b/martin_binance/executor.py
@@ -4,7 +4,7 @@
 __author__ = "Jerry Fedorenko"
 __copyright__ = "Copyright © 2021 Jerry Fedorenko aka VM"
 __license__ = "MIT"
-__version__ = "1.3.0-4"
+__version__ = "1.3.1"
 __maintainer__ = "Jerry Fedorenko"
 __contact__ = 'https://github.com/DogsTailFarmer'
 ##################################################################
@@ -1675,7 +1675,7 @@ def collect_assets(self) -> ():
             fs = f2d(0)
         return ff, fs
 
-    def message_log(self, msg: str, log_level=LogLevel.INFO, tlg: bool = False, color=Style.WHITE) -> None:
+    def message_log(self, msg: str, log_level=LogLevel.INFO, tlg=False, color=Style.WHITE) -> None:
         if tlg and color == Style.WHITE:
             color = Style.B_WHITE
         if log_level in (LogLevel.ERROR, LogLevel.CRITICAL):
diff --git a/martin_binance/margin_wrapper.py b/martin_binance/margin_wrapper.py
index 0249e4a..049805e 100644
--- a/martin_binance/margin_wrapper.py
+++ b/martin_binance/margin_wrapper.py
@@ -4,7 +4,7 @@
 __author__ = "Jerry Fedorenko"
 __copyright__ = "Copyright © 2021 Jerry Fedorenko aka VM"
 __license__ = "MIT"
-__version__ = "1.3.0-3"
+__version__ = "1.3.1"
 __maintainer__ = "Jerry Fedorenko"
 __contact__ = "https://github.com/DogsTailFarmer"
 
@@ -842,7 +842,8 @@ def session_data_handler(cls):
     ds = pd.Series(cls.s_order_book)
     ds.to_pickle(Path(raw_path, "order_book.pkl"))
     # Save klines snapshot
-    json.dump(cls.klines, open(Path(raw_path, "klines.json"), 'w'))
+    with open(Path(raw_path, "klines.json"), 'w') as f:
+        json.dump(cls.klines, f)
     # Save candles
     for k, v in cls.candles.items():
         ds = pd.Series(v)
diff --git a/pyproject.toml b/pyproject.toml
index c9a0a73..636884a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -35,7 +35,8 @@ dependencies = [
     "pandas==2.0.2",
     "dash==2.10.2",
     "future==0.18.3",
-    "inquirer==3.1.3"
+    "inquirer==3.1.3",
+    "scikit-learn==1.2.2",
 ]
 
 [tool.flit.module]
diff --git a/requirements.txt b/requirements.txt
index 66bf06d..1996cca 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,4 +16,5 @@ plotly==5.15.0
 pandas==2.0.2
 dash==2.10.2
 future==0.18.3
-inquirer==3.1.3
\ No newline at end of file
+inquirer==3.1.3
+scikit-learn==1.2.2
\ No newline at end of file