diff --git a/.github/workflows/tox.yml b/.github/workflows/tox.yml
index d0f22c4..f48427b 100644
--- a/.github/workflows/tox.yml
+++ b/.github/workflows/tox.yml
@@ -10,10 +10,8 @@ jobs:
     strategy:
       matrix:
         python-version:
-          - '3.8'
           - '3.11'
         pip-version:
-          - 22.0.4
           - 23.2.1
         include:
           - python-version: '3.12'
@@ -21,9 +19,9 @@ jobs:
 
     steps:
     - name: Check out code
-      uses: actions/checkout@v1
+      uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
@@ -34,7 +32,7 @@ jobs:
         TOX_PIP_VERSION: ${{ matrix.pip-version }}
       run: tox
     - name: Upload coverage data
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: coverage-${{ matrix.python-version }}
         path: .coverage*
@@ -46,13 +44,13 @@ jobs:
 
     steps:
     - name: Check out code
-      uses: actions/checkout@v1
+      uses: actions/checkout@v4
     - name: Download artifacts
-      uses: actions/download-artifact@v2
-    - name: Set up Python 3.8
-      uses: actions/setup-python@v2
+      uses: actions/download-artifact@v4
+    - name: Set up Python 3.11
+      uses: actions/setup-python@v5
       with:
-        python-version: 3.8
+        python-version: 3.11
     - name: Install dependencies
       run: |
         pip install coverage
@@ -64,10 +62,10 @@ jobs:
         coverage xml
         coverage report
     - name: Upload htmlcov archive
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: htmlcov
         path: htmlcov
         retention-days: 7
     - name: Upload to codecov
-      uses: codecov/codecov-action@v1
+      uses: codecov/codecov-action@v4
diff --git a/markdown_xblock/html.py b/markdown_xblock/html.py
index d9cd319..b31c3f8 100644
--- a/markdown_xblock/html.py
+++ b/markdown_xblock/html.py
@@ -8,16 +8,10 @@
 from django.conf import settings as django_settings
 from xblock.core import XBlock
 from xblock.fields import List, Scope, String
-try:  # XBlock 2+
-    from web_fragments.fragment import Fragment
-    from xblock.utils.resources import ResourceLoader
-    from xblock.utils.settings import XBlockWithSettingsMixin
-    from xblock.utils.studio_editable import StudioEditableXBlockMixin, loader
-except ImportError:  # Compatibility with XBlock<2
-    from xblock.fragment import Fragment
-    from xblockutils.resources import ResourceLoader
-    from xblockutils.settings import XBlockWithSettingsMixin
-    from xblockutils.studio_editable import StudioEditableXBlockMixin, loader
+from web_fragments.fragment import Fragment
+from xblock.utils.resources import ResourceLoader
+from xblock.utils.settings import XBlockWithSettingsMixin
+from xblock.utils.studio_editable import StudioEditableXBlockMixin, loader
 
 from .utils import _
 
@@ -282,21 +276,13 @@ def get_editable_fields(self):
         return fields
 
     @classmethod
-    def parse_xml(cls, node, runtime, keys, id_generator=None):
+    def parse_xml(cls, node, runtime, keys):
         """
         Use `node` to construct a new block.
         """
         block = runtime.construct_xblock_from_class(cls, keys)
 
-        # Prior to XBlock 2.0, id_generator is passed in.
-        # Since XBlock 2.0, we grab it from the runtime.
-        #
-        # TODO: Once we decide to drop support for versions prior to
-        # XBlock 2 (i.e. Open edX releases before Redwood), we can
-        # drop id_generator from the method signature, and always rely
-        # on runtime.id_generator.
-        if not id_generator:
-            id_generator = runtime.id_generator
+        id_generator = runtime.id_generator
 
         # Read markdown content from file and add to editor.
         url_name = node.get('url_name', node.get('slug'))
diff --git a/setup.py b/setup.py
index 518c85a..e37fa22 100644
--- a/setup.py
+++ b/setup.py
@@ -41,8 +41,7 @@ def package_data(pkg, roots):
         'markdown_xblock',
     ],
     install_requires=[
-        'XBlock<2; python_version < "3.9"',
-        'XBlock<5; python_version >= "3.9"',
+        'XBlock<5',
         'markdown2>=2.3.9',
         'Pygments>=2.0.1',
     ],
diff --git a/tox.ini b/tox.ini
index 14c70fc..0e02e43 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,9 +1,8 @@
 [tox]
-envlist = py{38,311,312},pipdeptree{,-requirements},flake8,report
+envlist = py{311,312},pipdeptree{,-requirements},flake8,report
 
 [gh-actions]
 python =
-    3.8: py38,pipdeptree{,-requirements},flake8
     3.11: py311,pipdeptree{,-requirements},flake8
     3.12: py312,pipdeptree{,-requirements},flake8