diff --git a/autopep8.py b/autopep8.py
index da427ecb..27809fc9 100755
--- a/autopep8.py
+++ b/autopep8.py
@@ -4018,13 +4018,16 @@ def read_config(args, parser):
 
 def read_pyproject_toml(args, parser):
     """Read pyproject.toml and load configuration."""
-    import tomli
+    if sys.version_info >= (3, 11):
+        import tomllib
+    else:
+        import tomli as tomllib
 
     config = None
 
     if os.path.exists(args.global_config):
         with open(args.global_config, "rb") as fp:
-            config = tomli.load(fp)
+            config = tomllib.load(fp)
 
     if not args.ignore_local_config:
         parent = tail = args.files and os.path.abspath(
@@ -4033,7 +4036,7 @@ def read_pyproject_toml(args, parser):
             pyproject_toml = os.path.join(parent, "pyproject.toml")
             if os.path.exists(pyproject_toml):
                 with open(pyproject_toml, "rb") as fp:
-                    config = tomli.load(fp)
+                    config = tomllib.load(fp)
                     break
             (parent, tail) = os.path.split(parent)
 
diff --git a/setup.py b/setup.py
old mode 100755
new mode 100644
index ba5c8f31..9e48162e
--- a/setup.py
+++ b/setup.py
@@ -10,7 +10,7 @@
 
 
 INSTALL_REQUIRES = (
-    ['pycodestyle >= 2.10.0', 'tomli']
+    ['pycodestyle >= 2.10.0', 'tomli; python_version < "3.11"']
 )