diff --git a/pyproject.toml b/pyproject.toml
index e2638b1..1006eeb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,14 +21,12 @@ classifiers = [
     "Topic :: Scientific/Engineering :: Artificial Intelligence",
     "Topic :: Scientific/Engineering :: Information Analysis",
     "Topic :: Software Development :: Libraries :: Python Modules",
-    "Programming Language :: Python :: 3.8",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
 ]
-requires-python = ">=3.8,<3.14"
+requires-python = ">=3.10,<3.14"
 dependencies = [
     "scikit-learn>=1.2.2",
     "typing-extensions>=4.1.0; python_full_version < '3.11'"
@@ -40,6 +38,7 @@ dev = [
     "pre-commit>=3.5.0",
     "pytest>=7.0.0",
     "ruff>=0.9.2",
+    "filelock>=3.20.1", # <-- ADD THIS LINE
 ]
 
 [project.urls]