diff --git a/pyproject.toml b/pyproject.toml
index 173e5a569e5..14235cf981e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -81,7 +81,7 @@ docs = [
     "sphinxcontrib-websupport",
 ]
 lint = [
-    "ruff==0.9.2",
+    "ruff==0.9.3",
     "mypy==1.14.1",
     "sphinx-lint>=0.9",
     "types-colorama==0.4.15.20240311",
diff --git a/sphinx/builders/latex/__init__.py b/sphinx/builders/latex/__init__.py
index 27a4767a5f6..6bd30c120d4 100644
--- a/sphinx/builders/latex/__init__.py
+++ b/sphinx/builders/latex/__init__.py
@@ -418,8 +418,6 @@ def assemble_doctree(
                         nodes.Text(')'),
                     ))
                     break
-            else:
-                pass
             pendingnode.replace_self(newnodes)
         return largetree
 
diff --git a/sphinx/builders/texinfo.py b/sphinx/builders/texinfo.py
index f2d8c060745..4544323ad99 100644
--- a/sphinx/builders/texinfo.py
+++ b/sphinx/builders/texinfo.py
@@ -186,8 +186,6 @@ def assemble_doctree(
                         nodes.Text(')'),
                     ))
                     break
-            else:
-                pass
             pendingnode.replace_self(newnodes)
         return largetree
 
diff --git a/sphinx/ext/coverage.py b/sphinx/ext/coverage.py
index ebb1c1f5bb0..67eac22b0ef 100644
--- a/sphinx/ext/coverage.py
+++ b/sphinx/ext/coverage.py
@@ -253,7 +253,7 @@ def write_c_coverage(self) -> None:
             for filename, undoc in self.c_undoc.items():
                 write_header(op, filename)
                 for typ, name in sorted(undoc):
-                    op.write(' * %-50s [%9s]\n' % (name, typ))
+                    op.write(f' * {name:<50} [{typ:>9}]\n')
                     if self.config.coverage_show_missing_items:
                         if self.app.quiet:
                             logger.warning(
@@ -415,8 +415,7 @@ def _write_py_statistics(self, op: TextIO) -> None:
         else:
             table.append(['TOTAL', '100', '0'])
 
-        for line in _write_table(table):
-            op.write(f'{line}\n')
+        op.writelines(f'{line}\n' for line in _write_table(table))
 
     def write_py_coverage(self) -> None:
         output_file = self.outdir / 'python.txt'
@@ -445,7 +444,7 @@ def write_py_coverage(self) -> None:
                     write_header(op, name)
                     if undoc['funcs']:
                         op.write('Functions:\n')
-                        op.writelines(' * %s\n' % x for x in undoc['funcs'])
+                        op.writelines(f' * {x}\n' for x in undoc['funcs'])
                         if self.config.coverage_show_missing_items:
                             if self.app.quiet:
                                 for func in undoc['funcs']:
@@ -467,7 +466,7 @@ def write_py_coverage(self) -> None:
                         op.write('Classes:\n')
                         for class_name, methods in sorted(undoc['classes'].items()):
                             if not methods:
-                                op.write(' * %s\n' % class_name)
+                                op.write(f' * {class_name}\n')
                                 if self.config.coverage_show_missing_items:
                                     if self.app.quiet:
                                         logger.warning(
@@ -483,8 +482,8 @@ def write_py_coverage(self) -> None:
                                             + name
                                         )
                             else:
-                                op.write(' * %s -- missing methods:\n\n' % class_name)
-                                op.writelines('   - %s\n' % x for x in methods)
+                                op.write(f' * {class_name} -- missing methods:\n\n')
+                                op.writelines(f'   - {x}\n' for x in methods)
                                 if self.config.coverage_show_missing_items:
                                     if self.app.quiet:
                                         for meth in methods:
diff --git a/sphinx/util/typing.py b/sphinx/util/typing.py
index 4f024c22c9d..9e090dde2ef 100644
--- a/sphinx/util/typing.py
+++ b/sphinx/util/typing.py
@@ -83,7 +83,7 @@
     pathlib.WindowsPath: 'pathlib.WindowsPath',
     # types in 'pickle' with <type>.__module__ == 'pickle':
     pickle.Pickler: 'pickle.Pickler',
-    pickle.Unpickler: 'pickle.Unpickler',
+    pickle.Unpickler: 'pickle.Unpickler',  # NoQA: S301
     # types in 'struct' with <type>.__module__ == '_struct':
     struct.Struct: 'struct.Struct',
     # types in 'types' with <type>.__module__ == 'builtins':