diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 0e4f84e6..08185da6 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -25,7 +25,7 @@ repos:
         args: [--prose-wrap=preserve]
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: "75b98813cfb7e663870a28c74366a1e99d7bfe79" # frozen: v0.6.9
+    rev: "89c421dff2e1026ba12cdb9ebd731f4a83aa8021" # frozen: v0.8.6
     hooks:
       - id: ruff
         args: ["--fix", "--show-fixes", "--exit-non-zero-on-fix"]
diff --git a/numpydoc/tests/test_docscrape.py b/numpydoc/tests/test_docscrape.py
index 4cafc762..f10adc45 100644
--- a/numpydoc/tests/test_docscrape.py
+++ b/numpydoc/tests/test_docscrape.py
@@ -1596,8 +1596,8 @@ def __init__(self, a, b):
             self.numpydoc_validation_overrides = dict()
 
     xref_aliases_complete = deepcopy(DEFAULT_LINKS)
-    for key in xref_aliases:
-        xref_aliases_complete[key] = xref_aliases[key]
+    for key, val in xref_aliases.items():
+        xref_aliases_complete[key] = val
     config = Config(xref_aliases, xref_aliases_complete)
     app = namedtuple("config", "config")(config)
     update_config(app)