diff --git a/arkindex/documents/tests/commands/test_load_export.py b/arkindex/documents/tests/commands/test_load_export.py
index fe7176f77bab295f9c39744540f9f7e892ad90b8..3bf8e452907f993998fd74713ada409fc82d2a50 100644
--- a/arkindex/documents/tests/commands/test_load_export.py
+++ b/arkindex/documents/tests/commands/test_load_export.py
@@ -54,7 +54,7 @@ class TestLoadExport(FixtureTestCase):
             "documents.classification": ["ml_class"],
         }
 
-        with open(path, "r") as file:
+        with open(path) as file:
             data = json.loads(file.read())
 
         results = []
diff --git a/ruff.toml b/ruff.toml
index 66759351ff95c325e26952a99aad73c38dc3391c..3de53043e9b2ad54a5c6ce9219ced1f982e3bdce 100644
--- a/ruff.toml
+++ b/ruff.toml
@@ -31,6 +31,8 @@ select = [
     "UP012",
     # convert-named-tuple-functional-to-class
     "UP014",
+    # redundant-open-modes
+    "UP015",
 ]
 ignore = ["E501", "RET502", "RET503"]