diff --git a/pyproject.toml b/pyproject.toml
index a6f619a6..8b83af5a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,7 +27,7 @@ dependencies = [
     'pandas==2.3.3',
     'pathos==0.3.4',
     'polyleven==0.9.0',
-    'pytest==8.4.2',
+    'pytest==9.0.0',
     'pytest-benchmark==5.2.0',
     'scikit-learn==1.7.2',
     'seaborn==0.13.2',
diff --git a/requirements.txt b/requirements.txt
index 2245f426..1979c369 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ palettable==3.3.3
 pandas==2.3.3
 pathos==0.3.4
 polyleven==0.9.0
-pytest==8.4.2
+pytest==9.0.0
 pytest-benchmark==5.2.0
 scikit-learn==1.7.2
 seaborn==0.13.2