diff --git a/poetry.lock b/poetry.lock
index 29d8fbec..fd7e9c27 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -2678,20 +2678,20 @@ diagrams = ["jinja2", "railroad-diagrams"]
 
 [[package]]
 name = "pytest"
-version = "8.4.2"
+version = "9.0.2"
 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-9.0.2-py3-none-any.whl", hash = "sha256:711ffd45bf766d5264d487b917733b453d917afd2b0ad65223959f59089f875b"},
+    {file = "pytest-9.0.2.tar.gz", hash = "sha256:75186651a92bd89611d1d9fc20f0b4345fd827c41ccd5c299a868a05d70edf11"},
 ]
 
 [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"
 
@@ -3537,4 +3537,4 @@ files = [
 [metadata]
 lock-version = "2.1"
 python-versions = "^3.12"
-content-hash = "3150131e9f6ba971b1c67ef72a03f523e3dfc01555790b117495c63300d02975"
+content-hash = "dee0bf6d9a6b9ebb7e3b32d5a2e1a426262b9e9269d4749c621297711a998af2"
diff --git a/pyproject.toml b/pyproject.toml
index c68444bd..a31bd475 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -57,7 +57,7 @@ marimo = "^0.16"
 black = "^24.3.0"
 mypy = "^1.1.1"
 pylint = "^3.2.6"
-pytest = "^8.3.2"
+pytest = "^9.0.2"
 pytest-cov = "^5.0.0"
 pytest-xdist = "^3.8.0"
 types-python-dateutil = "^2.9.0.20240316"