From 5995515f5ddcf2f478fbdb590d9bb5691a715fee Mon Sep 17 00:00:00 2001
From: Matthew Feickert <matthew.feickert@cern.ch>
Date: Wed, 5 Jul 2023 00:18:20 -0500
Subject: [PATCH] Try to pass ruff

---
 src/pyhf/workspace.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/pyhf/workspace.py b/src/pyhf/workspace.py
index a431926576..d211e6484f 100644
--- a/src/pyhf/workspace.py
+++ b/src/pyhf/workspace.py
@@ -8,6 +8,8 @@
 import collections
 import copy
 import logging
+from typing import ClassVar
+
 import jsonpatch
 
 from pyhf import exceptions, schema
@@ -284,7 +286,7 @@ class Workspace(_ChannelSummaryMixin, dict):
     A JSON-serializable object that is built from an object that follows the :obj:`workspace.json` `schema <https://scikit-hep.org/pyhf/likelihood.html#workspace>`__.
     """
 
-    valid_joins = ['none', 'outer', 'left outer', 'right outer']
+    valid_joins: ClassVar[list[str]] = ['none', 'outer', 'left outer', 'right outer']
 
     def __init__(self, spec, validate: bool = True, **config_kwargs):
         """