diff --git a/requirements/dev.pip b/requirements/dev.pip
index 07a417fb4..c59a2e6bd 100644
--- a/requirements/dev.pip
+++ b/requirements/dev.pip
@@ -79,7 +79,7 @@ mccabe==0.7.0
     # via pylint
 mdurl==0.1.2
     # via markdown-it-py
-more-itertools==9.1.0
+more-itertools==10.0.0
     # via jaraco-classes
 packaging==23.1
     # via
@@ -173,7 +173,7 @@ urwid==2.1.2
     #   urwid-readline
 urwid-readline==0.13
     # via pudb
-virtualenv==20.24.1
+virtualenv==20.24.2
     # via
     #   -r requirements/pip.in
     #   tox
diff --git a/requirements/light-threads.pip b/requirements/light-threads.pip
index 30afcba02..2613da1c9 100644
--- a/requirements/light-threads.pip
+++ b/requirements/light-threads.pip
@@ -4,18 +4,14 @@
 #
 #    make upgrade
 #
-anyio==3.7.1
-    # via httpcore
-certifi==2023.7.22
-    # via httpcore
 cffi==1.15.1
     # via -r requirements/light-threads.in
-dnspython==2.4.0
-    # via eventlet
+dnspython==2.3.0
+    # via
+    #   -c requirements/pins.pip
+    #   eventlet
 eventlet==0.33.3
     # via -r requirements/light-threads.in
-exceptiongroup==1.1.2
-    # via anyio
 gevent==23.7.0
     # via -r requirements/light-threads.in
 greenlet==2.0.2
@@ -23,21 +19,10 @@ greenlet==2.0.2
     #   -r requirements/light-threads.in
     #   eventlet
     #   gevent
-h11==0.14.0
-    # via httpcore
-httpcore==0.17.3
-    # via dnspython
-idna==3.4
-    # via anyio
 pycparser==2.21
     # via cffi
 six==1.16.0
     # via eventlet
-sniffio==1.3.0
-    # via
-    #   anyio
-    #   dnspython
-    #   httpcore
 zope-event==5.0
     # via gevent
 zope-interface==6.0
diff --git a/requirements/pins.pip b/requirements/pins.pip
index 97e4b2974..21244809d 100644
--- a/requirements/pins.pip
+++ b/requirements/pins.pip
@@ -6,3 +6,6 @@
 # sphinx-rtd-theme wants <7
 # https://github.com/readthedocs/sphinx_rtd_theme/issues/1463
 Sphinx<7
+
+# https://github.com/rthalley/dnspython/issues/957
+dnspython<2.4.0
diff --git a/requirements/pip.pip b/requirements/pip.pip
index b0be94d8e..f921ccbdb 100644
--- a/requirements/pip.pip
+++ b/requirements/pip.pip
@@ -10,7 +10,7 @@ filelock==3.12.2
     # via virtualenv
 platformdirs==3.9.1
     # via virtualenv
-virtualenv==20.24.1
+virtualenv==20.24.2
     # via -r requirements/pip.in
 
 # The following packages are considered to be unsafe in a requirements file:
diff --git a/requirements/tox.pip b/requirements/tox.pip
index dd99e98cf..dfb6d828a 100644
--- a/requirements/tox.pip
+++ b/requirements/tox.pip
@@ -40,5 +40,5 @@ tox==4.6.4
     #   tox-gh
 tox-gh==1.3.0
     # via -r requirements/tox.in
-virtualenv==20.24.1
+virtualenv==20.24.2
     # via tox