diff --git a/newer-versions.cfg b/newer-versions.cfg
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+# This file contains unofficial newer version pins for a few packages.
+# These are known to work on Plone 5.2, but there are reasons to not include
+# them officially.  The changes in there may be slightly more "adventurous"
+# than is deemed wise at this late stage in the Plone 5.2 release cycle:
+# currently (November 2023) Plone 5.2 is even out of maintenance support.
+# Some do not work on Python 2, and we do not want to have two different
+# version pins for core packages, to avoid confusion.
+#
+# * This file is NOT automatically being tested.
+# * This file is NOT regularly updated.
+# * We recommend to NOT use this file directly, but to take over the versions
+#   you want in your own versions files.
+#
+# In short: use this at your own risk, and if you know what you are doing.
+
+[versions]
+# plone.dexterity has a fix for a possible memory leak.
+# See https://github.com/plone/Products.CMFPlone/issues/3829
+# Main change is here:
+# https://github.com/plone/plone.dexterity/pull/189
+plone.dexterity = 2.11.0
+
+# The newer plone.dexterity version leads to test failures on Python 3,
+# which may or may not happen in production use as well.  plone.supermodel
+# backports a fix made for the dexterity site root in Plone 6, which
+# helps for this new situation as well.
+# Main change is here:
+# https://github.com/plone/plone.supermodel/pull/55
+plone.supermodel = 1.7.0
+
+[versions:python3]
+# These are versions that are incompatible with Python 2.
+# They are used in Plone 6.0, but are being tested on Plone 5.2 as well.
+
+# We try to keep latest plone.restapi compatible with a wide range of Plone
+# versions, including Plone 5.2.
+plone.restapi = 9.1.2
+
+# plone.volto configures Plone to work with Volto, the new default frontend for
+# Plone 6.
+plone.volto = 4.1.0
+
+# Newer plone.namedfile and plone.scale work together to pre-register image
+# scales without generating them yet.  This means that creating a tag no longer
+# generates the actual scale: generating is only done when the scale is
+# actually requested by a browser.
+# See `CHANGES.rst` in both packages to look for other large changes.
+plone.namedfile = 6.2.3
+plone.scale = 4.1.0