diff --git a/pyproject.toml b/pyproject.toml
index 6887002..7904dc2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,7 +24,7 @@ dependencies = [
 viz = ["matplotlib>=3.8", "seaborn>=0.13", "plotly>=5.20", "streamlit>=1.33"]
 ml = ["numba>=0.59", "arch>=7.0"]
 data = ["yfinance>=0.2.40"]
-dev = ["pytest>=8", "pytest-cov>=5", "hypothesis>=6.100", "ruff>=0.4"]
+dev = ["pytest>=8", "pytest-cov>=5", "hypothesis>=6.100", "ruff>=0.15.12"]
 
 [tool.setuptools.packages.find]
 where = ["."]