diff --git a/pyproject.toml b/pyproject.toml
index f7282097..e33a1c5b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -46,10 +46,10 @@ pfo-server = ["fastapi[standard]", "pydantic<2", "lowtime", "aiofiles", "torch"]
 bso = ["pydantic<2"]
 bso-server = ["fastapi[standard]", "sqlalchemy", "pydantic<2", "python-dotenv"]
 migration = ["alembic", "sqlalchemy", "pydantic<2", "python-dotenv"]
+prometheus = ["prometheus-client"]
 lint = ["ruff", "black==22.6.0", "pyright", "pandas-stubs", "transformers"]
 test = ["fastapi[standard]", "sqlalchemy", "pydantic<2", "pytest==7.3.2", "pytest-mock==3.10.0", "pytest-xdist==3.3.1", "anyio==3.7.1", "aiosqlite==0.20.0", "numpy<2"]
 docs = ["mkdocs-material[imaging]==9.5.19", "mkdocstrings[python]==0.25.0", "mkdocs-gen-files==0.5.0", "mkdocs-literate-nav==0.6.1", "mkdocs-section-index==0.3.9", "mkdocs-redirects==1.2.1", "urllib3<2", "black"]
-prometheus = ["prometheus-client"]
 # greenlet is for supporting apple mac silicon for sqlalchemy(https://docs.sqlalchemy.org/en/20/faq/installation.html)
 dev = ["zeus-ml[pfo-server,bso,bso-server,migration,prometheus,lint,test]", "greenlet"]