From dfae97adf9d0b614acc3c8abe7c3f59d3b5e0dc5 Mon Sep 17 00:00:00 2001
From: Tobias Raabe <raabe@posteo.de>
Date: Sat, 22 Nov 2025 09:10:23 +0100
Subject: [PATCH 1/3] Fix pickle hash test for Python 3.14 compatibility

Python 3.14 uses pickle protocol 5 by default (instead of protocol 4),
which produces different hash values for the same pickled data.

Make the test version-aware to use the correct expected hash based on
the Python version.
---
 tests/test_nodes.py | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/tests/test_nodes.py b/tests/test_nodes.py
index 63ed12bd..cab6a37d 100644
--- a/tests/test_nodes.py
+++ b/tests/test_nodes.py
@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import pickle
+import sys
 from pathlib import Path
 
 import cloudpickle
@@ -94,7 +95,15 @@ def test_hash_of_path_node(tmp_path, value, exists, expected):
     ("value", "exists", "expected"),
     [
         ("0", False, None),
-        ("0", True, "2e81f502b7a28f824c4f1451c946b952eebe65a8521925ef8f6135ef6f422e8e"),
+        # Python 3.14+ uses pickle protocol 5 by default, which produces different
+        # hashes
+        (
+            "0",
+            True,
+            "1973e23848344dc43a988a9b478663803cfffe1243480253f9a3cf004b14aa7c"
+            if sys.version_info >= (3, 14)
+            else "2e81f502b7a28f824c4f1451c946b952eebe65a8521925ef8f6135ef6f422e8e",
+        ),
     ],
 )
 def test_hash_of_pickle_node(tmp_path, value, exists, expected):

From 39406a6951a5712373325d244ab5fcea24f37c89 Mon Sep 17 00:00:00 2001
From: Tobias Raabe <raabe@posteo.de>
Date: Sat, 22 Nov 2025 14:38:33 +0100
Subject: [PATCH 2/3] Add changelog entry for pickle hash test

---
 CHANGELOG.md | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3ef53db1..da418249 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,11 @@ chronological order. Releases follow [semantic versioning](https://semver.org/)
 releases are available on [PyPI](https://pypi.org/project/pytask) and
 [Anaconda.org](https://anaconda.org/conda-forge/pytask).
 
+## Unreleased
+
+- {pull}`???` fixes the pickle node hash test by accounting for Python 3.14's
+  default pickle protocol.
+
 ## 0.5.7 - 2025-11-22
 
 - {pull}`721` clarifies the documentation on repeated tasks in notebooks.

From 470daf3621be4ef651c0f2973200e4f2ff105cef Mon Sep 17 00:00:00 2001
From: Tobias Raabe <raabe@posteo.de>
Date: Sat, 22 Nov 2025 14:39:29 +0100
Subject: [PATCH 3/3] Reference PR number in changelog

---
 CHANGELOG.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index da418249..cb1bf018 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,7 +7,7 @@ releases are available on [PyPI](https://pypi.org/project/pytask) and
 
 ## Unreleased
 
-- {pull}`???` fixes the pickle node hash test by accounting for Python 3.14's
+- {pull}`725` fixes the pickle node hash test by accounting for Python 3.14's
   default pickle protocol.
 
 ## 0.5.7 - 2025-11-22