diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index c952e8e..a65fd04 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,14 +1,14 @@
 repos:
   - repo: https://github.com/psf/black
-    rev: 22.3.0
+    rev: 23.12.0
     hooks:
       - id: black
   - repo: https://github.com/pycqa/flake8
-    rev: 4.0.1
+    rev: 6.1.0
     hooks:
       - id: flake8
   - repo: https://github.com/pycqa/isort
-    rev: 5.10.1
+    rev: 5.13.2
     hooks:
       - id: isort
         name: isort (python)
diff --git a/case_utils/case_file/__init__.py b/case_utils/case_file/__init__.py
index e131b2f..2eb4f95 100644
--- a/case_utils/case_file/__init__.py
+++ b/case_utils/case_file/__init__.py
@@ -39,6 +39,7 @@
 
 DEFAULT_PREFIX = "http://example.org/kb/"
 
+
 # Shortcut syntax for defining an immutable named tuple is noted here:
 # https://docs.python.org/3/library/typing.html#typing.NamedTuple
 # via the "See also" box here: https://docs.python.org/3/library/collections.html#collections.namedtuple
diff --git a/case_utils/case_sparql_construct/__init__.py b/case_utils/case_sparql_construct/__init__.py
index eb9610f..a96f06b 100644
--- a/case_utils/case_sparql_construct/__init__.py
+++ b/case_utils/case_sparql_construct/__init__.py
@@ -98,7 +98,7 @@ def main() -> None:
     construct_query_result = in_graph.query(construct_query_object)
     _logger.debug("type(construct_query_result) = %r." % type(construct_query_result))
     _logger.debug("len(construct_query_result) = %d." % len(construct_query_result))
-    for (row_no, row) in enumerate(construct_query_result):
+    for row_no, row in enumerate(construct_query_result):
         if row_no == 0:
             _logger.debug("row[0] = %r." % (row,))
         out_graph.add(row)
diff --git a/case_utils/case_sparql_select/__init__.py b/case_utils/case_sparql_select/__init__.py
index a2023bf..87e2b50 100644
--- a/case_utils/case_sparql_select/__init__.py
+++ b/case_utils/case_sparql_select/__init__.py
@@ -110,10 +110,10 @@ def main() -> None:
     select_query_object = rdflib.plugins.sparql.prepareQuery(
         select_query_text, initNs=nsdict
     )
-    for (row_no, row) in enumerate(graph.query(select_query_object)):
+    for row_no, row in enumerate(graph.query(select_query_object)):
         tally = row_no + 1
         record = []
-        for (column_no, column) in enumerate(row):
+        for column_no, column in enumerate(row):
             if column is None:
                 column_value = ""
             elif (