diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 998518e..19b09b3 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -35,7 +35,7 @@ repos:
       - id: add-trailing-comma
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: "v0.8.6"
+    rev: "v0.9.2"
     hooks:
       - id: ruff
         args: [--fix, --exit-non-zero-on-fix]
diff --git a/tests/test_opendap_router.py b/tests/test_opendap_router.py
index 1335f95..897987e 100644
--- a/tests/test_opendap_router.py
+++ b/tests/test_opendap_router.py
@@ -47,12 +47,12 @@ def test_das_response(dap_client):
     assert 'String standard_name "latitude"' in content
     assert 'String standard_name "time"' in content
     assert 'String standard_name "longitude"' in content
-    assert (
-        'String long_name "4xDaily Air temperature at sigma level 995"' in content
-    ), "long_name attribute missing from air DataArray"
-    assert (
-        'String title "4x daily NMC reanalysis (1948)"' in content
-    ), "Global attributes are returned"
+    assert 'String long_name "4xDaily Air temperature at sigma level 995"' in content, (
+        "long_name attribute missing from air DataArray"
+    )
+    assert 'String title "4x daily NMC reanalysis (1948)"' in content, (
+        "Global attributes are returned"
+    )
 
 
 def test_dods_response(dap_client):
@@ -112,12 +112,12 @@ def test_single_das_response(dap_single_client):
     assert 'String standard_name "latitude"' in content
     assert 'String standard_name "time"' in content
     assert 'String standard_name "longitude"' in content
-    assert (
-        'String long_name "4xDaily Air temperature at sigma level 995"' in content
-    ), "long_name attribute missing from air DataArray"
-    assert (
-        'String title "4x daily NMC reanalysis (1948)"' in content
-    ), "Global attributes are returned"
+    assert 'String long_name "4xDaily Air temperature at sigma level 995"' in content, (
+        "long_name attribute missing from air DataArray"
+    )
+    assert 'String title "4x daily NMC reanalysis (1948)"' in content, (
+        "Global attributes are returned"
+    )
 
 
 def test_single_dods_response(dap_single_client):