.. changelog::
:version: 1.4.39
- :include_notes_from: unreleased_14
+ :released: June 24, 2022
+
+ .. change::
+ :tags: bug, orm, regression
+ :tickets: 8133
+
+ Fixed regression caused by :ticket:`8133` where the pickle format for
+ mutable attributes was changed, without a fallback to recognize the old
+ format, causing in-place upgrades of SQLAlchemy to no longer be able to
+ read pickled data from previous versions. A check plus a fallback for the
+ old format is now in place.
.. changelog::
:version: 1.4.38
+++ /dev/null
-.. change::
- :tags: bug, orm, regression
- :tickets: 8133
-
- Fixed regression caused by :ticket:`8133` where the pickle format for
- mutable attributes was changed, without a fallback to recognize the old
- format, causing in-place upgrades of SQLAlchemy to no longer be able to
- read pickled data from previous versions. A check plus a fallback for the
- old format is now in place.