diff --git a/.gitignore b/.gitignore
index 248d031..02ab341 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,3 +20,4 @@ uv.lock
 .ropeproject
 node_modules
 mutants
+.qwen
diff --git a/README.md b/README.md
index 54eca3d..d843cf6 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ Python's built-in [`None`](https://docs.python.org/3/library/constants.html#None
 
 ## The problem
 
-Programmers encounter uncertainty everywhere. We [don't know](https://en.wikipedia.org/wiki/Semipredicate_problem) in advance whether a user will enter a valid value into a form, or whether a given operation on two numbers is possible. To highlight uncertainty as a separate entity, programmers have come up with so-called [sentinel objects](https://en.wikipedia.org/wiki/Sentinel_value). These can take many forms: [NULL](https://en.wikipedia.org/wiki/Null_pointer), [`None`](https://docs.python.org/3/library/constants.html#None), [nil](https://ru.wikipedia.org/wiki/Nil), [undefined](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/undefined), [NaN](https://en.wikipedia.org/wiki/NaN), and an infinite number of others.
+Programmers encounter uncertainty everywhere. We [don't know](https://en.wikipedia.org/wiki/Semipredicate_problem) in advance whether a user will enter a valid value into a form, or whether a given operation on two numbers is possible. To highlight uncertainty as a separate entity, programmers have come up with so-called [sentinel objects](https://en.wikipedia.org/wiki/Sentinel_value). These can take many forms: [`NULL`](https://en.wikipedia.org/wiki/Null_pointer), [`None`](https://docs.python.org/3/library/constants.html#None), [`nil`](https://ru.wikipedia.org/wiki/Nil), [`undefined`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/undefined), [`NaN`](https://en.wikipedia.org/wiki/NaN), and an infinite number of others.
 
 Different programming languages and environments offer [different models](#analogs) for representing uncertainty as objects. This is usually related to how a particular language has evolved and what forms of uncertainty its users most often encounter. Broadly, I see [three](https://numberwarrior.wordpress.com/2010/07/30/is-one-two-many-a-myth/) main models:
 
diff --git a/denial/inner.py b/denial/inner.py
index 22e966f..edcda81 100644
--- a/denial/inner.py
+++ b/denial/inner.py
@@ -3,7 +3,7 @@
 from typing import Any, Optional, Union
 
 from locklib import ContextLockProtocol
-from printo import describe_data_object, not_none
+from printo import describe_call, not_none
 
 from denial.errors import (
     DoubleSingletonsInstantiationError,
@@ -48,7 +48,7 @@ def __hash__(self) -> int:
     def __repr__(self) -> str:
         if self.id == 0 and self.auto:
             return 'InnerNone'
-        return describe_data_object(type(self).__name__, (self.id,), {'doc': self.doc, 'auto': self.auto}, filters={'auto': lambda x: x != True, 'doc': not_none})
+        return describe_call(type(self).__name__, [self.id], {'doc': self.doc, 'auto': self.auto}, filters={'auto': lambda x: x != True, 'doc': not_none})
 
     def __bool__(self) -> bool:
         return False
diff --git a/pyproject.toml b/pyproject.toml
index 63e6956..d18b48f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,21 +1,21 @@
 [build-system]
-requires = ["setuptools==68.0.0"]
-build-backend = "setuptools.build_meta"
+requires = ['setuptools==68.0.0']
+build-backend = 'setuptools.build_meta'
 
 [project]
-name = "denial"
-version = "0.0.13"
-authors = [{ name = "Evgeniy Blinov", email = "zheni-b@yandex.ru" }]
+name = 'denial'
+version = '0.0.14'
+authors = [{ name = 'Evgeniy Blinov', email = 'zheni-b@yandex.ru' }]
 description = "Is one None not enough for you? There's more"
-readme = "README.md"
-requires-python = ">=3.8"
+readme = 'README.md'
+requires-python = '>=3.8'
 dependencies = [
-    'printo>=0.0.22',
-    'locklib>=0.0.20',
+    'printo>=0.0.27',
+    'locklib>=0.0.21',
     'typing_extensions ; python_version <= "3.10"',
 ]
 classifiers = [
-    "Operating System :: OS Independent",
+    'Operating System :: OS Independent',
     'Operating System :: MacOS :: MacOS X',
     'Operating System :: Microsoft :: Windows',
     'Operating System :: POSIX',
@@ -34,23 +34,24 @@ classifiers = [
     'License :: OSI Approved :: MIT License',
     'Intended Audience :: Developers',
     'Topic :: Software Development :: Libraries',
+    'Typing :: Typed',
 ]
 keywords = ['None', 'sentinel']
 
 [tool.setuptools.package-data]
-"denial" = ["py.typed"]
+"denial" = ['py.typed']
 
 [tool.mutmut]
-paths_to_mutate = "denial"
-runner = "pytest"
+paths_to_mutate = 'denial'
+runner = 'pytest'
 
 [tool.pytest.ini_options]
-markers = ["mypy_testing"]
+markers = ['mypy_testing']
 
 [tool.ruff]
 lint.ignore = ['E501', 'E712', 'PTH123', 'PTH118', 'PLR2004', 'PTH107', 'SIM105', 'SIM102', 'RET503', 'PLR0912', 'C901']
-lint.select = ["ERA001", "YTT", "ASYNC", "BLE", "B", "A", "COM", "INP", "PIE", "T20", "PT", "RSE", "RET", "SIM", "SLOT", "TID252", "ARG", "PTH", "I", "C90", "N", "E", "W", "D201", "D202", "D419", "F", "PL", "PLE", "PLR", "PLW", "RUF", "TRY201", "TRY400", "TRY401"]
-format.quote-style = "single"
+lint.select = ['ERA001', 'YTT', 'ASYNC', 'BLE', 'B', 'A', 'COM', 'INP', 'PIE', 'T20', 'PT', 'RSE', 'RET', 'SIM', 'SLOT', 'TID252', 'ARG', 'PTH', 'I', 'C90', 'N', 'E', 'W', 'D201', 'D202', 'D419', 'F', 'PL', 'PLE', 'PLR', 'PLW', 'RUF', 'TRY201', 'TRY400', 'TRY401']
+format.quote-style = 'single'
 
 [project.urls]
 'Source' = 'https://github.com/mutating/denial'