---
 pyproject.toml    |    3 +--
 tests/test_api.py |    5 -----
 2 files changed, 1 insertion(+), 7 deletions(-)

Index: nbformat-5.10.3/pyproject.toml
===================================================================
--- nbformat-5.10.3.orig/pyproject.toml
+++ nbformat-5.10.3/pyproject.toml
@@ -56,7 +56,6 @@ test = [
     "testpath",
     "pytest",
     "pre-commit",
-    "pep440"
 ]
 
 [project.scripts]
Index: nbformat-5.10.3/tests/test_api.py
===================================================================
--- nbformat-5.10.3.orig/tests/test_api.py
+++ nbformat-5.10.3/tests/test_api.py
@@ -11,7 +11,6 @@ from tempfile import TemporaryDirectory
 from typing import Any
 
 from jsonschema import ValidationError
-from pep440 import is_canonical
 
 from nbformat import __version__ as nbf_version
 from nbformat import current_nbformat, read, write, writes
@@ -21,10 +20,6 @@ from nbformat.validator import isvalid
 from .base import TestsBase
 
 
-def test_canonical_version():
-    assert is_canonical(nbf_version)
-
-
 class TestAPI(TestsBase):
     def test_read(self):
         """Can older notebooks be opened and automatically converted to the current