From cef4878b468952784623d873e54ebb8438b2c269 Mon Sep 17 00:00:00 2001
From: Cristian Le <git@lecris.dev>
Date: Wed, 15 Jan 2025 11:04:57 +0100
Subject: [PATCH] Drop pep440 dependency

---
 pyproject.toml    | 2 +-
 tests/test_api.py | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/pyproject.toml b/pyproject.toml
index dff5bfe0..acde9ba9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -57,7 +57,7 @@ test = [
     "testpath",
     "pytest",
     "pre-commit",
-    "pep440"
+    "packaging"
 ]
 
 [project.scripts]
diff --git a/tests/test_api.py b/tests/test_api.py
index f2d76f3e..c5b8b9a0 100644
--- a/tests/test_api.py
+++ b/tests/test_api.py
@@ -11,7 +11,7 @@
 from typing import Any
 
 from jsonschema import ValidationError
-from pep440 import is_canonical
+from packaging import version
 
 from nbformat import __version__ as nbf_version
 from nbformat import current_nbformat, read, write, writes
@@ -22,7 +22,7 @@
 
 
 def test_canonical_version():
-    assert is_canonical(nbf_version)
+    assert str(version.parse(nbf_version)) == nbf_version
 
 
 class TestAPI(TestsBase):