diff --git a/pyproject.toml b/pyproject.toml
index 630eef5e7..d54d7b6b9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -271,7 +271,6 @@ ignore = [
     "SIM105", # use contextlib.suppress
     "SIM108", # use ternary operator
     "SIM114", # combine if branches using logical or operator
-    "SIM115", # use context handler for opening files
     # flake8-self
     "SLF001",  # private member accessed
     # flake8-print
diff --git a/sphinx/cmd/build.py b/sphinx/cmd/build.py
index 57430507d..811838c9d 100644
--- a/sphinx/cmd/build.py
+++ b/sphinx/cmd/build.py
@@ -241,7 +241,7 @@ def _parse_arguments(argv: list[str] = sys.argv[1:]) -> argparse.Namespace:
         try:
             warnfile = path.abspath(args.warnfile)
             ensuredir(path.dirname(warnfile))
-            warnfp = open(args.warnfile, 'w', encoding="utf-8")
+            warnfp = open(args.warnfile, 'w', encoding="utf-8")  # NoQA: SIM115
         except Exception as exc:
             parser.error(__('cannot open warning file %r: %s') % (
                 args.warnfile, exc))
diff --git a/sphinx/ext/doctest.py b/sphinx/ext/doctest.py
index db62f06b5..c55ef2fa7 100644
--- a/sphinx/ext/doctest.py
+++ b/sphinx/ext/doctest.py
@@ -304,7 +304,8 @@ class DocTestBuilder(Builder):
 
         date = time.strftime('%Y-%m-%d %H:%M:%S')
 
-        self.outfile = open(path.join(self.outdir, 'output.txt'), 'w', encoding='utf-8')
+        outpath = self.outdir.joinpath('output.txt')
+        self.outfile = outpath.open('w', encoding='utf-8')  # NoQA: SIM115
         self.outfile.write(('Results of doctest builder run on %s\n'
                             '==================================%s\n') %
                            (date, '=' * len(date)))
diff --git a/sphinx/ext/githubpages.py b/sphinx/ext/githubpages.py
index a30986467..ddb8dc75a 100644
--- a/sphinx/ext/githubpages.py
+++ b/sphinx/ext/githubpages.py
@@ -36,7 +36,7 @@ def create_nojekyll_and_cname(app: Sphinx, env: BuildEnvironment) -> None:
     if app.builder.format != 'html':
         return
 
-    open(os.path.join(app.builder.outdir, '.nojekyll'), 'wb').close()
+    app.builder.outdir.joinpath('.nojekyll').touch()
     cname_path = os.path.join(app.builder.outdir, 'CNAME')
 
     domain = _get_domain_from_url(app.config.html_baseurl)
diff --git a/sphinx/ext/intersphinx.py b/sphinx/ext/intersphinx.py
index 6a612f2ab..c84506f39 100644
--- a/sphinx/ext/intersphinx.py
+++ b/sphinx/ext/intersphinx.py
@@ -182,7 +182,7 @@ def fetch_inventory(app: Sphinx, uri: str, inv: str) -> Inventory:
         if '://' in inv:
             f = _read_from_url(inv, config=app.config)
         else:
-            f = open(path.join(app.srcdir, inv), 'rb')
+            f = open(path.join(app.srcdir, inv), 'rb')  # NoQA: SIM115
     except Exception as err:
         err.args = ('intersphinx inventory %r not fetchable due to %s: %s',
                     inv, err.__class__, str(err))