--- a/CHANGES.txt	Thu May 19 21:17:39 2022 +0200
+++ b/CHANGES.txt	Thu May 19 22:10:59 2022 +0200
@@ -18,6 +18,17 @@
 - **[feature]**
   Allow to enable and disable the internal caching
 
+- **[feature]**
+  Add support for using :py:mod:`tomllib` (in Python's stdlib since 3.11)
+  and :py:mod:`tomli` TOML packages. They are preferred if they are found
+  to be installed.
+
+  But note that the declared dependency for the ``toml`` extra nevertheless
+  is the :py:mod:`toml` package. Because it is available for all supported
+  Python versions.
+  So use Python 3.11+ or install :py:mod:`tomli` manually if you want to
+  use the alternate packages.
+
 - **[bugfix]**
   For better consistency: use `.getvarl_s()` instead of `.getvarl()`
   in the implementation of `__len__()` in jailed configurations.

--- a/configmix/toml.py	Thu May 19 21:17:39 2022 +0200
+++ b/configmix/toml.py	Thu May 19 22:10:59 2022 +0200
@@ -22,7 +22,22 @@
     except ImportError:
         DictImpl = dict
 
-import toml
+try:
+    import tomllib
+except ImportError:
+    tomllib = None
+    try:
+        import tomli
+    except ImportError:
+        tomli = None
+        try:
+            import toml
+        except ImportError:
+            toml = None
+    else:
+        toml = None
+else:
+    toml = tomli = None
 
 from .compat import u2fs
 
@@ -34,6 +49,18 @@
               encoded.
 
     """
-    with io.open(
-            u2fs(filename), mode="rt", encoding=encoding, newline="") as tfp:
-        return toml.loads(tfp.read(), _dict=DictImpl)
+    if tomllib:
+        with open(u2fs(filename), mode="rb") as tfp:
+            return tomllib.load(tfp)
+    elif tomli:
+        with open(u2fs(filename), mode="rb") as tfp:
+            return tomli.load(tfp)
+    elif toml:
+        with io.open(
+                u2fs(filename),
+                mode="rt",
+                encoding=encoding,
+                newline="") as tfp:
+            return toml.loads(tfp.read(), _dict=DictImpl)
+    else:
+        assert False