diff --git a/poetry.lock b/poetry.lock
index 6fc38df..f3f83f2 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -521,7 +521,7 @@ description = "Cross-platform colored terminal text."
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,!=3.6.*,>=2.7"
 groups = ["dev"]
-markers = "sys_platform == \"win32\" or platform_system == \"Windows\""
+markers = "platform_system == \"Windows\" or sys_platform == \"win32\""
 files = [
     {file = "colorama-0.4.6-py2.py3-none-any.whl", hash = "sha256:4f1d9991f5acc0ca119f9d443620b77f9d6b33703e51011c16baf57afb285fc6"},
     {file = "colorama-0.4.6.tar.gz", hash = "sha256:08695f5cb7ed6e0531a20572697297273c47b8cae5a63ffc6d6ed5c201be6e44"},
@@ -1942,20 +1942,20 @@ windows-terminal = ["colorama (>=0.4.6)"]
 
 [[package]]
 name = "pytest"
-version = "8.4.2"
+version = "9.0.0"
 description = "pytest: simple powerful testing with Python"
 optional = false
-python-versions = ">=3.9"
+python-versions = ">=3.10"
 groups = ["dev"]
 files = [
-    {file = "pytest-8.4.2-py3-none-any.whl", hash = "sha256:872f880de3fc3a5bdc88a11b39c9710c3497a547cfa9320bc3c5e62fbf272e79"},
-    {file = "pytest-8.4.2.tar.gz", hash = "sha256:86c0d0b93306b961d58d62a4db4879f27fe25513d4b969df351abdddb3c30e01"},
+    {file = "pytest-9.0.0-py3-none-any.whl", hash = "sha256:e5ccdf10b0bac554970ee88fc1a4ad0ee5d221f8ef22321f9b7e4584e19d7f96"},
+    {file = "pytest-9.0.0.tar.gz", hash = "sha256:8f44522eafe4137b0f35c9ce3072931a788a21ee40a2ed279e817d3cc16ed21e"},
 ]
 
 [package.dependencies]
 colorama = {version = ">=0.4", markers = "sys_platform == \"win32\""}
-iniconfig = ">=1"
-packaging = ">=20"
+iniconfig = ">=1.0.1"
+packaging = ">=22"
 pluggy = ">=1.5,<2"
 pygments = ">=2.7.2"
 
@@ -2755,4 +2755,4 @@ files = [
 [metadata]
 lock-version = "2.1"
 python-versions = "^3.11"
-content-hash = "e3366e809a57beca15b72b4d27a7dc1b513cd23a7c1ec51043d6f0246a10fb7a"
+content-hash = "28400fe6b708cc0894218028340390ae1647eacbbd5b376c30eb77e909db541f"
diff --git a/pyproject.toml b/pyproject.toml
index 9ae8d54..1c2815d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ readme = "README.md"
 python = "^3.11"
 
 [tool.poetry.group.dev.dependencies]
-pytest = "^8.4.2"
+pytest = "^9.0.0"
 jupyter = "~=1.1.0"
 black = { extras = ["jupyter"], version = "~25.9.0" }
 flake8 = "^7.3.0"