diff --git a/pyproject.toml b/pyproject.toml
index 3c107b5..bf616a4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ dev = [
     "pre-commit>=3.5.0",
     "pytest>=7.0.0",
     "ruff>=0.9.2",
-    "filelock>=3.20.1", # <-- ADD THIS LINE
+    "filelock>=4.1.0", # <-- ADD THIS LINE
 ]
 
 [project.urls]
diff --git a/requirements.txt b/requirements.txt
index 04b48c9..8287298 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
 scikit-learn>=1.2.2
 typing-extensions>=4.1.0; python_version < "3.11"
-filelock>=3.20.1
\ No newline at end of file
+filelock>=4.1.0
\ No newline at end of file
diff --git a/uv.lock b/uv.lock
index 4da5dea..9703630 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1,5 +1,5 @@
 version = 1
-revision = 3
+revision = 5
 requires-python = ">=3.10, <3.14"
 
 [[package]]
@@ -43,11 +43,11 @@ wheels = [
 
 [[package]]
 name = "filelock"
-version = "3.24.2"
+version = "4.1.0"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/02/a8/dae62680be63cbb3ff87cfa2f51cf766269514ea5488479d42fec5aa6f3a/filelock-3.24.2.tar.gz", hash = "sha256:c22803117490f156e59fafce621f0550a7a853e2bbf4f87f112b11d469b6c81b", size = 37601, upload-time = "2026-02-16T02:50:45.614Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/4c/58/6fd434bec86eff7c38a3168454cb132b762b2bea9b3ac094101a2f7bc32a/filelock-4.1.0.tar.gz", hash = "sha256:ad7f724afef953e731b1cc39bcd3a09166d72ed7fcdf29e6e88b1c3235c6715d", size = 561277, upload-time = "2026-10-09T19:57:20.34Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/e7/04/a94ebfb4eaaa08db56725a40de2887e95de4e8641b9e902c311bfa00aa39/filelock-3.24.2-py3-none-any.whl", hash = "sha256:667d7dc0b7d1e1064dd5f8f8e80bdac157a6482e8d2e02cd16fd3b6b33bd6556", size = 24152, upload-time = "2026-02-16T02:50:44Z" },
+    { url = "https://files.pythonhosted.org/packages/ee/86/032133892a5de43b5a98200b01aadcad68cc255e274a762f08b8a76d2912/filelock-4.1.0-py3-none-any.whl", hash = "sha256:2ce9818e3e2d8f284c1a964414447ef148d42a5fd5e2a477a7118e574b293ec1", size = 133003, upload-time = "2026-10-09T19:57:18.716Z" },
 ]
 
 [[package]]
@@ -111,7 +111,7 @@ requires-dist = [
 
 [package.metadata.requires-dev]
 dev = [
-    { name = "filelock", specifier = ">=3.20.1" },
+    { name = "filelock", specifier = ">=4.1.0" },
     { name = "isort" },
     { name = "pre-commit", specifier = ">=3.5.0" },
     { name = "pytest", specifier = ">=7.0.0" },
@@ -484,16 +484,17 @@ wheels = [
 
 [[package]]
 name = "virtualenv"
-version = "21.7.13"
+version = "21.14.5"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "distlib" },
     { name = "filelock" },
+    { name = "packaging" },
     { name = "platformdirs" },
     { name = "python-discovery" },
     { name = "typing-extensions", marker = "python_full_version < '3.11'" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/13/50/c9b84eb106d0db420b9878dac0a386c5791726f127ce20b06897f6e3a1e9/virtualenv-21.7.13.tar.gz", hash = "sha256:0355558b6f33619aab31347e43643b0ebc97f61ea3acf617b2b69e1f8a843d11", size = 5360306, upload-time = "2026-09-18T04:35:49.354Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/c4/f9/f323b3b6058cff3853b31cf6a49c0425ed797bf9611572ec10d065e08bac/virtualenv-21.14.5.tar.gz", hash = "sha256:c4cb6c13e46b57225a999c7e22a09b163393878facc7ac4c059a57f46faa1647", size = 5467127, upload-time = "2026-10-02T17:42:25.613Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/9a/ce/e74453531b0c49a58d0e8a4f9bab4495705859fee4a4f7de27d58f4a791a/virtualenv-21.7.13-py3-none-any.whl", hash = "sha256:1bea5af7463f59c4719db48fe739579a2a4f569c96f26c086edda85c96da9f59", size = 5328680, upload-time = "2026-09-18T04:35:47.194Z" },
+    { url = "https://files.pythonhosted.org/packages/df/93/084f10ebbecdedf7902ed68fbecc903f0e9c5742155bfffb05eccbc071da/virtualenv-21.14.5-py3-none-any.whl", hash = "sha256:b0651e0174982bba17cc6f0aaa2ef496730cb85a3f35eb5d1119d1c904f7d1da", size = 5487482, upload-time = "2026-10-02T17:42:23.38Z" },
 ]