diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3f66b739f..d01127342 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,7 +10,7 @@ on:
 jobs:
   run_tests:
     name: tests
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
@@ -18,9 +18,9 @@ jobs:
         toxenv: [quality, django42]
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: setup python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
 
diff --git a/.github/workflows/pypi-publish.yml b/.github/workflows/pypi-publish.yml
index 6ed7ebfab..a90b053a2 100644
--- a/.github/workflows/pypi-publish.yml
+++ b/.github/workflows/pypi-publish.yml
@@ -7,13 +7,13 @@ on:
 jobs:
 
   push:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       - name: setup python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v5
         with:
           python-version: 3.11
 
diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index d52e4ea2b..f3284985c 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -17,7 +17,7 @@ formats:
 
 # Set the version of python needed to build these docs.
 build:
-  os: "ubuntu-22.04"
+  os: "ubuntu-lts-latest"
   tools:
     python: "3.11"
 
diff --git a/requirements/ci.txt b/requirements/ci.txt
index 3c5df6382..61355c780 100644
--- a/requirements/ci.txt
+++ b/requirements/ci.txt
@@ -22,7 +22,7 @@ packaging==24.1
     # via
     #   pyproject-api
     #   tox
-platformdirs==4.3.1
+platformdirs==4.3.2
     # via
     #   tox
     #   virtualenv
diff --git a/requirements/constraints.txt b/requirements/constraints.txt
index 3bb18ffde..b23164274 100644
--- a/requirements/constraints.txt
+++ b/requirements/constraints.txt
@@ -10,7 +10,3 @@
 
 # Common constraints for edx repos
 -c https://raw.githubusercontent.com/edx/edx-lint/master/edx_lint/files/common_constraints.txt
-
-# diff-cover latest requires (pluggy>=0.13.1,<0.14.0) which conflicts with pytest which requires(pluggy>=0.12,<2.0.0)
-# Using the same version of diff-cover which is being used currently in edx-platform to avoid this conflict.
-diff-cover==4.0.0
diff --git a/requirements/dev.txt b/requirements/dev.txt
index b3de0d30b..886560225 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -43,6 +43,7 @@ chardet==5.2.0
     # via
     #   -r requirements/ci.txt
     #   -r requirements/test.txt
+    #   diff-cover
     #   tox
 click==8.1.7
     # via
@@ -72,10 +73,8 @@ coverage[toml]==7.6.1
     #   pytest-cov
 ddt==1.7.2
     # via -r requirements/test.txt
-diff-cover==4.0.0
-    # via
-    #   -c requirements/constraints.txt
-    #   -r requirements/test.txt
+diff-cover==9.2.0
+    # via -r requirements/test.txt
 dill==0.3.8
     # via
     #   -r requirements/test.txt
@@ -115,10 +114,6 @@ fs-s3fs==1.1.1
     #   openedx-django-pyfs
 hypothesis==6.112.0
     # via -r requirements/test.txt
-inflect==7.4.0
-    # via
-    #   -r requirements/test.txt
-    #   jinja2-pluralize
 iniconfig==2.0.0
     # via
     #   -r requirements/test.txt
@@ -132,11 +127,6 @@ jinja2==3.1.4
     #   -r requirements/test.txt
     #   code-annotations
     #   diff-cover
-    #   jinja2-pluralize
-jinja2-pluralize==0.3.0
-    # via
-    #   -r requirements/test.txt
-    #   diff-cover
 jmespath==1.0.1
     # via
     #   -r requirements/test.txt
@@ -159,10 +149,6 @@ mccabe==0.7.0
     #   pylint
 mock==5.1.0
     # via -r requirements/test.txt
-more-itertools==10.5.0
-    # via
-    #   -r requirements/test.txt
-    #   inflect
 openedx-django-pyfs==3.7.0
     # via -r requirements/test.txt
 packaging==24.1
@@ -182,7 +168,7 @@ pbr==6.1.0
     #   stevedore
 pip-tools==7.4.1
     # via -r requirements/pip-tools.txt
-platformdirs==4.3.1
+platformdirs==4.3.2
     # via
     #   -r requirements/ci.txt
     #   -r requirements/test.txt
@@ -297,15 +283,10 @@ tox==4.18.1
     # via
     #   -r requirements/ci.txt
     #   -r requirements/test.txt
-typeguard==4.3.0
-    # via
-    #   -r requirements/test.txt
-    #   inflect
 typing-extensions==4.12.2
     # via
     #   -r requirements/test.txt
     #   edx-opaque-keys
-    #   typeguard
 urllib3==2.2.2
     # via
     #   -r requirements/test.txt
diff --git a/requirements/django.in b/requirements/django.in
index c15b7a5ea..064856e67 100644
--- a/requirements/django.in
+++ b/requirements/django.in
@@ -8,7 +8,3 @@
 Django
 openedx-django-pyfs>=1.0.5
 lazy
-
-# Needed until we drop testing on Python 3.8 so that
-# we don't try to install this on newer versions of python.
-backports.zoneinfo;python_version<"3.9"
diff --git a/requirements/test.txt b/requirements/test.txt
index 24bb93c40..b337ef2cb 100644
--- a/requirements/test.txt
+++ b/requirements/test.txt
@@ -31,7 +31,9 @@ botocore==1.35.14
 cachetools==5.5.0
     # via tox
 chardet==5.2.0
-    # via tox
+    # via
+    #   diff-cover
+    #   tox
 click==8.1.7
     # via
     #   click-log
@@ -49,10 +51,8 @@ coverage[toml]==7.6.1
     #   pytest-cov
 ddt==1.7.2
     # via -r requirements/test.in
-diff-cover==4.0.0
-    # via
-    #   -c requirements/constraints.txt
-    #   -r requirements/test.in
+diff-cover==9.2.0
+    # via -r requirements/test.in
 dill==0.3.8
     # via pylint
 distlib==0.3.8
@@ -84,8 +84,6 @@ fs-s3fs==1.1.1
     #   openedx-django-pyfs
 hypothesis==6.112.0
     # via -r requirements/test.in
-inflect==7.4.0
-    # via jinja2-pluralize
 iniconfig==2.0.0
     # via pytest
 isort==5.13.2
@@ -94,9 +92,6 @@ jinja2==3.1.4
     # via
     #   code-annotations
     #   diff-cover
-    #   jinja2-pluralize
-jinja2-pluralize==0.3.0
-    # via diff-cover
 jmespath==1.0.1
     # via
     #   -r requirements/django.txt
@@ -117,8 +112,6 @@ mccabe==0.7.0
     # via pylint
 mock==5.1.0
     # via -r requirements/test.in
-more-itertools==10.5.0
-    # via inflect
 openedx-django-pyfs==3.7.0
     # via -r requirements/django.txt
 packaging==24.1
@@ -132,7 +125,7 @@ pbr==6.1.0
     # via
     #   -r requirements/django.txt
     #   stevedore
-platformdirs==4.3.1
+platformdirs==4.3.2
     # via
     #   pylint
     #   tox
@@ -218,13 +211,10 @@ tomlkit==0.13.2
     # via pylint
 tox==4.18.1
     # via -r requirements/test.in
-typeguard==4.3.0
-    # via inflect
 typing-extensions==4.12.2
     # via
     #   -r requirements/django.txt
     #   edx-opaque-keys
-    #   typeguard
 urllib3==2.2.2
     # via
     #   -r requirements/django.txt
diff --git a/setup.py b/setup.py
index 779fc04c2..77a3c93ae 100755
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,6 @@
 """
 Set up for XBlock
 """
-import codecs
 import os
 import os.path
 import re
diff --git a/tox.ini b/tox.ini
index 4f9001094..bf7c2fb86 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,8 +8,8 @@ filterwarnings = always
 norecursedirs = .* docs requirements
 
 [testenv]
-deps = 
-    django42: Django>=4.2,<4.3
+deps =
+    django42: Django>=4.2,<5.0
     -r requirements/test.txt
 changedir = {envsitepackagesdir}
 commands =
@@ -31,8 +31,8 @@ commands =
     make html
 
 [testenv:quality]
-deps = 
-    django42: Django>=4.2,<4.3
+deps =
+    django42: Django>=4.2,<5.0
     -r requirements/test.txt
 changedir = {toxinidir}
 commands =