diff --git a/CHANGES.rst b/CHANGES.rst
index f9a2f33b14..bb1d3e6536 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -10,11 +10,13 @@ https://github.com/zopefoundation/Zope/blob/4.x/CHANGES.rst
 5.11.1 (unreleased)
 -------------------
 
- - Define ``request["PARENTS"]`` before request parameter processing
-   such that request failure subscribers (such as that of
-   ``Products.SiteErrorLog``) can determine the error context
-   for exceptions raised during request parameter processing
-   (see `#1235 <https://github.com/zopefoundation/Zope/issues/1235>`_).
+- Update to newest compatible versions of dependencies.
+
+- Define ``request["PARENTS"]`` before request parameter processing
+  such that request failure subscribers (such as that of
+  ``Products.SiteErrorLog``) can determine the error context
+  for exceptions raised during request parameter processing
+  (see `#1235 <https://github.com/zopefoundation/Zope/issues/1235>`_).
    
 
 5.11 (2024-10-11)
diff --git a/constraints.txt b/constraints.txt
index 2725ef890d..3d48cf78aa 100644
--- a/constraints.txt
+++ b/constraints.txt
@@ -13,7 +13,7 @@ PasteDeploy==3.1.0
 Persistence==5.1
 RestrictedPython==7.4
 WSGIProxy2==0.5.1
-WebOb==1.8.8
+WebOb==1.8.9
 WebTest==3.0.1
 ZConfig==4.1
 ZODB==6.0
@@ -29,7 +29,8 @@ roman==4.2
 six==1.16.0
 soupsieve==2.6
 transaction==5.0
-waitress==3.0.0
+waitress==3.0.0; python_version == '3.8'
+waitress==3.0.1; python_version > '3.8'
 z3c.pt==4.4
 zExceptions==5.0
 zc.lockfile==3.0.post1
@@ -51,13 +52,13 @@ zope.deferredimport==5.0
 zope.deprecation==5.0
 zope.dottedname==6.0
 zope.event==5.0
-zope.exceptions==5.1
+zope.exceptions==5.2
 zope.filerepresentation==6.0
 zope.globalrequest==2.0
 zope.hookable==7.0
 zope.i18n==5.2
 zope.i18nmessageid==7.0
-zope.interface==7.1.0
+zope.interface==7.1.1
 zope.lifecycleevent==5.0
 zope.location==5.0
 zope.pagetemplate==5.1
diff --git a/requirements-full.txt b/requirements-full.txt
index b964ef58f9..ff2d5d780c 100644
--- a/requirements-full.txt
+++ b/requirements-full.txt
@@ -14,7 +14,7 @@ PasteDeploy==3.1.0
 Persistence==5.1
 RestrictedPython==7.4
 WSGIProxy2==0.5.1
-WebOb==1.8.8
+WebOb==1.8.9
 WebTest==3.0.1
 ZConfig==4.1
 ZODB==6.0
@@ -30,7 +30,8 @@ roman==4.2
 six==1.16.0
 soupsieve==2.6
 transaction==5.0
-waitress==3.0.0
+waitress==3.0.0; python_version == '3.8'
+waitress==3.0.1; python_version > '3.8'
 z3c.pt==4.4
 zExceptions==5.0
 zc.lockfile==3.0.post1
@@ -52,13 +53,13 @@ zope.deferredimport==5.0
 zope.deprecation==5.0
 zope.dottedname==6.0
 zope.event==5.0
-zope.exceptions==5.1
+zope.exceptions==5.2
 zope.filerepresentation==6.0
 zope.globalrequest==2.0
 zope.hookable==7.0
 zope.i18n==5.2
 zope.i18nmessageid==7.0
-zope.interface==7.1.0
+zope.interface==7.1.1
 zope.lifecycleevent==5.0
 zope.location==5.0
 zope.pagetemplate==5.1
diff --git a/versions-prod.cfg b/versions-prod.cfg
index eee47a631b..e451ccb93b 100644
--- a/versions-prod.cfg
+++ b/versions-prod.cfg
@@ -19,7 +19,7 @@ Persistence = 5.1
 RestrictedPython = 7.4
 WebTest = 3.0.1
 WSGIProxy2 = 0.5.1
-WebOb = 1.8.8
+WebOb = 1.8.9
 ZConfig = 4.1
 ZODB = 6.0
 beautifulsoup4 = 4.12.3
@@ -33,7 +33,7 @@ six = 1.16.0
 roman = 4.2
 soupsieve = 2.6
 transaction = 5.0
-waitress = 3.0.0
+waitress = 3.0.1
 z3c.pt = 4.4
 zExceptions = 5.0
 zc.lockfile = 3.0.post1
@@ -55,13 +55,13 @@ zope.deferredimport = 5.0
 zope.deprecation = 5.0
 zope.dottedname = 6.0
 zope.event = 5.0
-zope.exceptions = 5.1
+zope.exceptions = 5.2
 zope.filerepresentation = 6.0
 zope.globalrequest = 2.0
 zope.hookable = 7.0
 zope.i18n = 5.2
 zope.i18nmessageid = 7.0
-zope.interface = 7.1.0
+zope.interface = 7.1.1
 zope.lifecycleevent = 5.0
 zope.location = 5.0
 zope.pagetemplate = 5.1
@@ -85,3 +85,5 @@ zope.viewlet = 5.0
 [versions:python38]
 # Chameleon >= 4.5 requires Python 3.9
 Chameleon = 4.4.4
+# waitress >= 3.0.1 requires Python 3.9
+waitress = 3.0.0
diff --git a/versions.cfg b/versions.cfg
index 569f9d2d09..535faa0840 100644
--- a/versions.cfg
+++ b/versions.cfg
@@ -8,12 +8,12 @@ versions = versions
 Babel = 2.16.0
 Jinja2 = 3.1.4
 Missing = 5.0
-MarkupSafe = 3.0.1
+MarkupSafe = 3.0.2
 Products.BTreeFolder2 = 5.1
 Products.ZCatalog = 7.1
 Pygments = 2.18.0
 Record = 4.1
-Sphinx = 8.0.2
+Sphinx = 8.1.3
 alabaster = 1.0.0
 certifi = 2024.8.30
 charset-normalizer = 3.4.0
@@ -45,7 +45,7 @@ urllib3 = 2.2.3
 z3c.checkversions = 2.1
 zc.recipe.testrunner = 3.1
 zipp = 3.20.2
-zope.testrunner = 6.5
+zope.testrunner = 6.6
 
 [versions:python39]
 # Sphinx <8 requires alabaster <1