diff --git a/pyproject.toml b/pyproject.toml
index 2f73075..0707da8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -47,7 +47,7 @@ test = [
     "flake8==6.1.0",
     "isort==5.13.2",
     "mypy==1.17.0",
-    "pytest==8.4.1",
+    "pytest==9.0.0",
     "pytest-asyncio==0.26.0",
     "pytest-cov==5.0.0",
     "langchain_google_vertexai==2.0.27"