diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 90ff8b1e..2742b13f 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -4,6 +4,10 @@ Change history for XBlock SDK
 
 These are notable changes in XBlock.
 
+0.9.0
+-----
+* Xblock bumped to 3.0.0. Removed the deprecated id_generator method parameter in xblock.runtime
+
 0.8.0
 -----
 * Added support for python 3.12
diff --git a/requirements/base.txt b/requirements/base.txt
index fabdf932..0a9da4fc 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -8,13 +8,17 @@ appdirs==1.4.4
     # via fs
 arrow==1.3.0
     # via cookiecutter
-asgiref==3.7.2
+asgiref==3.8.0
     # via django
+backports-zoneinfo==0.2.1 ; python_version < "3.9"
+    # via
+    #   -c requirements/constraints.txt
+    #   django
 binaryornot==0.4.4
     # via cookiecutter
-boto3==1.34.49
+boto3==1.34.67
     # via fs-s3fs
-botocore==1.34.49
+botocore==1.34.67
     # via
     #   boto3
     #   s3transfer
@@ -28,7 +32,7 @@ click==8.1.7
     # via cookiecutter
 cookiecutter==2.6.0
     # via -r requirements/base.in
-django==3.2.24
+django==4.2.11
     # via
     #   -c requirements/common_constraints.txt
     #   -r requirements/base.in
@@ -74,7 +78,7 @@ pygments==2.17.2
     # via rich
 pypng==0.20220715.0
     # via -r requirements/base.in
-python-dateutil==2.8.2
+python-dateutil==2.9.0.post0
     # via
     #   arrow
     #   botocore
@@ -82,9 +86,7 @@ python-dateutil==2.8.2
 python-slugify==8.0.4
     # via cookiecutter
 pytz==2024.1
-    # via
-    #   django
-    #   xblock
+    # via xblock
 pyyaml==6.0.1
     # via
     #   cookiecutter
@@ -93,9 +95,9 @@ requests==2.31.0
     # via
     #   -r requirements/base.in
     #   cookiecutter
-rich==13.7.0
+rich==13.7.1
     # via cookiecutter
-s3transfer==0.10.0
+s3transfer==0.10.1
     # via boto3
 simplejson==3.19.2
     # via
@@ -110,7 +112,7 @@ sqlparse==0.4.4
     # via django
 text-unidecode==1.3
     # via python-slugify
-types-python-dateutil==2.8.19.20240106
+types-python-dateutil==2.9.0.20240316
     # via arrow
 typing-extensions==4.10.0
     # via
@@ -128,7 +130,7 @@ webob==1.8.7
     # via
     #   -r requirements/base.in
     #   xblock
-xblock[django]==1.10.0
+xblock[django]==3.0.0
     # via -r requirements/base.in
 
 # The following packages are considered to be unsafe in a requirements file:
diff --git a/requirements/ci.txt b/requirements/ci.txt
index e7a87609..9f335db1 100644
--- a/requirements/ci.txt
+++ b/requirements/ci.txt
@@ -4,7 +4,7 @@
 #
 #    make upgrade
 #
-cachetools==5.3.2
+cachetools==5.3.3
     # via tox
 chardet==5.2.0
     # via tox
@@ -16,7 +16,7 @@ filelock==3.13.1
     # via
     #   tox
     #   virtualenv
-packaging==23.2
+packaging==24.0
     # via
     #   pyproject-api
     #   tox
@@ -32,7 +32,7 @@ tomli==2.0.1
     # via
     #   pyproject-api
     #   tox
-tox==4.13.0
+tox==4.14.1
     # via -r requirements/ci.in
 virtualenv==20.25.1
     # via tox
diff --git a/requirements/common_constraints.txt b/requirements/common_constraints.txt
index 15aafb29..e3bf8eae 100644
--- a/requirements/common_constraints.txt
+++ b/requirements/common_constraints.txt
@@ -13,7 +13,7 @@
 
 
 # using LTS django version
-Django<4.0
+Django<5.0
 
 # elasticsearch>=7.14.0 includes breaking changes in it which caused issues in discovery upgrade process.
 # elastic search changelog: https://www.elastic.co/guide/en/enterprise-search/master/release-notes-7.14.0.html
@@ -21,3 +21,12 @@ elasticsearch<7.14.0
 
 # django-simple-history>3.0.0 adds indexing and causes a lot of migrations to be affected
 django-simple-history==3.0.0
+
+# opentelemetry requires version 6.x at the moment:
+# https://github.com/open-telemetry/opentelemetry-python/issues/3570
+# Normally this could be added as a constraint in edx-django-utils, where we're
+# adding the opentelemetry dependency. However, when we compile pip-tools.txt,
+# that uses version 7.x, and then there's no undoing that when compiling base.txt.
+# So we need to pin it globally, for now.
+# Ticket for unpinning: https://github.com/openedx/edx-lint/issues/407
+importlib-metadata<7
diff --git a/requirements/constraints.txt b/requirements/constraints.txt
index f14a06a2..97db89c6 100644
--- a/requirements/constraints.txt
+++ b/requirements/constraints.txt
@@ -10,4 +10,5 @@
 
 # Common constraints for edx repos
 -c common_constraints.txt
+backports.zoneinfo;python_version<"3.9"
 lxml<5.0.0
diff --git a/requirements/dev.txt b/requirements/dev.txt
index 71aaf115..c11fadf8 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -4,7 +4,7 @@
 #
 #    make upgrade
 #
-acid-xblock==0.2.1
+acid-xblock==0.3.0
     # via
     #   -r requirements/test.in
     #   -r requirements/test.txt
@@ -18,7 +18,7 @@ arrow==1.3.0
     #   -r requirements/base.txt
     #   -r requirements/test.txt
     #   cookiecutter
-asgiref==3.7.2
+asgiref==3.8.0
     # via
     #   -r requirements/base.txt
     #   -r requirements/test.txt
@@ -27,23 +27,29 @@ astroid==3.1.0
     # via
     #   pylint
     #   pylint-celery
+backports-zoneinfo==0.2.1 ; python_version < "3.9"
+    # via
+    #   -c requirements/constraints.txt
+    #   -r requirements/base.txt
+    #   -r requirements/test.txt
+    #   django
 binaryornot==0.4.4
     # via
     #   -r requirements/base.txt
     #   -r requirements/test.txt
     #   cookiecutter
-boto3==1.34.49
+boto3==1.34.67
     # via
     #   -r requirements/base.txt
     #   -r requirements/test.txt
     #   fs-s3fs
-botocore==1.34.49
+botocore==1.34.67
     # via
     #   -r requirements/base.txt
     #   -r requirements/test.txt
     #   boto3
     #   s3transfer
-cachetools==5.3.2
+cachetools==5.3.3
     # via
     #   -r requirements/test.txt
     #   tox
@@ -73,7 +79,7 @@ click==8.1.7
     #   edx-lint
 click-log==0.4.0
     # via edx-lint
-code-annotations==1.6.0
+code-annotations==1.7.0
     # via edx-lint
 colorama==0.4.6
     # via
@@ -83,7 +89,7 @@ cookiecutter==2.6.0
     # via
     #   -r requirements/base.txt
     #   -r requirements/test.txt
-coverage[toml]==7.4.3
+coverage[toml]==7.4.4
     # via
     #   -r requirements/test.in
     #   -r requirements/test.txt
@@ -98,7 +104,7 @@ distlib==0.3.8
     # via
     #   -r requirements/test.txt
     #   virtualenv
-django==3.2.24
+django==4.2.11
     # via
     #   -c requirements/common_constraints.txt
     #   -r requirements/base.txt
@@ -198,7 +204,7 @@ openedx-django-pyfs==3.5.0
     #   -r requirements/base.txt
     #   -r requirements/test.txt
     #   xblock
-packaging==23.2
+packaging==24.0
     # via
     #   -r requirements/test.txt
     #   pyproject-api
@@ -249,7 +255,7 @@ pyproject-api==1.6.1
     # via
     #   -r requirements/test.txt
     #   tox
-pytest==8.0.2
+pytest==8.1.1
     # via
     #   -r requirements/test.txt
     #   pytest-cov
@@ -263,11 +269,11 @@ pytest-django==4.8.0
     # via
     #   -r requirements/test.in
     #   -r requirements/test.txt
-pytest-rerunfailures==13.0
+pytest-rerunfailures==14.0
     # via
     #   -r requirements/test.in
     #   -r requirements/test.txt
-python-dateutil==2.8.2
+python-dateutil==2.9.0.post0
     # via
     #   -r requirements/base.txt
     #   -r requirements/test.txt
@@ -284,7 +290,6 @@ pytz==2024.1
     # via
     #   -r requirements/base.txt
     #   -r requirements/test.txt
-    #   django
     #   xblock
 pyyaml==6.0.1
     # via
@@ -298,12 +303,12 @@ requests==2.31.0
     #   -r requirements/base.txt
     #   -r requirements/test.txt
     #   cookiecutter
-rich==13.7.0
+rich==13.7.1
     # via
     #   -r requirements/base.txt
     #   -r requirements/test.txt
     #   cookiecutter
-s3transfer==0.10.0
+s3transfer==0.10.1
     # via
     #   -r requirements/base.txt
     #   -r requirements/test.txt
@@ -343,13 +348,13 @@ tomli==2.0.1
     #   pyproject-api
     #   pytest
     #   tox
-tomlkit==0.12.3
+tomlkit==0.12.4
     # via pylint
-tox==4.13.0
+tox==4.14.1
     # via
     #   -r requirements/test.in
     #   -r requirements/test.txt
-types-python-dateutil==2.8.19.20240106
+types-python-dateutil==2.9.0.20240316
     # via
     #   -r requirements/base.txt
     #   -r requirements/test.txt
@@ -382,7 +387,7 @@ webob==1.8.7
     #   -r requirements/base.txt
     #   -r requirements/test.txt
     #   xblock
-xblock[django]==1.10.0
+xblock[django]==3.0.0
     # via
     #   -r requirements/base.txt
     #   -r requirements/test.txt
diff --git a/requirements/pip-tools.txt b/requirements/pip-tools.txt
index 44c48d99..b1ac4e54 100644
--- a/requirements/pip-tools.txt
+++ b/requirements/pip-tools.txt
@@ -4,15 +4,17 @@
 #
 #    make upgrade
 #
-build==1.0.3
+build==1.1.1
     # via pip-tools
 click==8.1.7
     # via pip-tools
-importlib-metadata==7.0.1
-    # via build
-packaging==23.2
+importlib-metadata==6.11.0
+    # via
+    #   -c requirements/common_constraints.txt
+    #   build
+packaging==24.0
     # via build
-pip-tools==7.4.0
+pip-tools==7.4.1
     # via -r requirements/pip-tools.in
 pyproject-hooks==1.0.0
     # via
@@ -23,9 +25,9 @@ tomli==2.0.1
     #   build
     #   pip-tools
     #   pyproject-hooks
-wheel==0.42.0
+wheel==0.43.0
     # via pip-tools
-zipp==3.17.0
+zipp==3.18.1
     # via importlib-metadata
 
 # The following packages are considered to be unsafe in a requirements file:
diff --git a/requirements/pip.txt b/requirements/pip.txt
index 66656035..cf449024 100644
--- a/requirements/pip.txt
+++ b/requirements/pip.txt
@@ -4,11 +4,11 @@
 #
 #    make upgrade
 #
-wheel==0.42.0
+wheel==0.43.0
     # via -r requirements/pip.in
 
 # The following packages are considered to be unsafe in a requirements file:
 pip==24.0
     # via -r requirements/pip.in
-setuptools==69.1.1
+setuptools==69.2.0
     # via -r requirements/pip.in
diff --git a/requirements/quality.txt b/requirements/quality.txt
index b1fe6965..aa0d0941 100644
--- a/requirements/quality.txt
+++ b/requirements/quality.txt
@@ -4,7 +4,7 @@
 #
 #    make upgrade
 #
-acid-xblock==0.2.1
+acid-xblock==0.3.0
     # via -r requirements/test.txt
 appdirs==1.4.4
     # via
@@ -14,7 +14,7 @@ arrow==1.3.0
     # via
     #   -r requirements/test.txt
     #   cookiecutter
-asgiref==3.7.2
+asgiref==3.8.0
     # via
     #   -r requirements/test.txt
     #   django
@@ -22,20 +22,25 @@ astroid==3.1.0
     # via
     #   pylint
     #   pylint-celery
+backports-zoneinfo==0.2.1 ; python_version < "3.9"
+    # via
+    #   -c requirements/constraints.txt
+    #   -r requirements/test.txt
+    #   django
 binaryornot==0.4.4
     # via
     #   -r requirements/test.txt
     #   cookiecutter
-boto3==1.34.49
+boto3==1.34.67
     # via
     #   -r requirements/test.txt
     #   fs-s3fs
-botocore==1.34.49
+botocore==1.34.67
     # via
     #   -r requirements/test.txt
     #   boto3
     #   s3transfer
-cachetools==5.3.2
+cachetools==5.3.3
     # via
     #   -r requirements/test.txt
     #   tox
@@ -61,7 +66,7 @@ click==8.1.7
     #   edx-lint
 click-log==0.4.0
     # via edx-lint
-code-annotations==1.6.0
+code-annotations==1.7.0
     # via edx-lint
 colorama==0.4.6
     # via
@@ -69,7 +74,7 @@ colorama==0.4.6
     #   tox
 cookiecutter==2.6.0
     # via -r requirements/test.txt
-coverage[toml]==7.4.3
+coverage[toml]==7.4.4
     # via
     #   -r requirements/test.txt
     #   pytest-cov
@@ -81,7 +86,7 @@ distlib==0.3.8
     # via
     #   -r requirements/test.txt
     #   virtualenv
-django==3.2.24
+django==4.2.11
     # via
     #   -c requirements/common_constraints.txt
     #   -r requirements/test.txt
@@ -166,7 +171,7 @@ openedx-django-pyfs==3.5.0
     # via
     #   -r requirements/test.txt
     #   xblock
-packaging==23.2
+packaging==24.0
     # via
     #   -r requirements/test.txt
     #   pyproject-api
@@ -214,7 +219,7 @@ pyproject-api==1.6.1
     # via
     #   -r requirements/test.txt
     #   tox
-pytest==8.0.2
+pytest==8.1.1
     # via
     #   -r requirements/test.txt
     #   pytest-cov
@@ -224,9 +229,9 @@ pytest-cov==4.1.0
     # via -r requirements/test.txt
 pytest-django==4.8.0
     # via -r requirements/test.txt
-pytest-rerunfailures==13.0
+pytest-rerunfailures==14.0
     # via -r requirements/test.txt
-python-dateutil==2.8.2
+python-dateutil==2.9.0.post0
     # via
     #   -r requirements/test.txt
     #   arrow
@@ -240,7 +245,6 @@ python-slugify==8.0.4
 pytz==2024.1
     # via
     #   -r requirements/test.txt
-    #   django
     #   xblock
 pyyaml==6.0.1
     # via
@@ -252,11 +256,11 @@ requests==2.31.0
     # via
     #   -r requirements/test.txt
     #   cookiecutter
-rich==13.7.0
+rich==13.7.1
     # via
     #   -r requirements/test.txt
     #   cookiecutter
-s3transfer==0.10.0
+s3transfer==0.10.1
     # via
     #   -r requirements/test.txt
     #   boto3
@@ -291,11 +295,11 @@ tomli==2.0.1
     #   pyproject-api
     #   pytest
     #   tox
-tomlkit==0.12.3
+tomlkit==0.12.4
     # via pylint
-tox==4.13.0
+tox==4.14.1
     # via -r requirements/test.txt
-types-python-dateutil==2.8.19.20240106
+types-python-dateutil==2.9.0.20240316
     # via
     #   -r requirements/test.txt
     #   arrow
@@ -323,7 +327,7 @@ webob==1.8.7
     # via
     #   -r requirements/test.txt
     #   xblock
-xblock[django]==1.10.0
+xblock[django]==3.0.0
     # via
     #   -r requirements/test.txt
     #   acid-xblock
diff --git a/requirements/test.txt b/requirements/test.txt
index 447c1fc5..5bd6460e 100644
--- a/requirements/test.txt
+++ b/requirements/test.txt
@@ -4,7 +4,7 @@
 #
 #    make upgrade
 #
-acid-xblock==0.2.1
+acid-xblock==0.3.0
     # via -r requirements/test.in
 appdirs==1.4.4
     # via
@@ -14,24 +14,29 @@ arrow==1.3.0
     # via
     #   -r requirements/base.txt
     #   cookiecutter
-asgiref==3.7.2
+asgiref==3.8.0
     # via
     #   -r requirements/base.txt
     #   django
+backports-zoneinfo==0.2.1 ; python_version < "3.9"
+    # via
+    #   -c requirements/constraints.txt
+    #   -r requirements/base.txt
+    #   django
 binaryornot==0.4.4
     # via
     #   -r requirements/base.txt
     #   cookiecutter
-boto3==1.34.49
+boto3==1.34.67
     # via
     #   -r requirements/base.txt
     #   fs-s3fs
-botocore==1.34.49
+botocore==1.34.67
     # via
     #   -r requirements/base.txt
     #   boto3
     #   s3transfer
-cachetools==5.3.2
+cachetools==5.3.3
     # via tox
 certifi==2024.2.2
     # via
@@ -54,7 +59,7 @@ colorama==0.4.6
     # via tox
 cookiecutter==2.6.0
     # via -r requirements/base.txt
-coverage[toml]==7.4.3
+coverage[toml]==7.4.4
     # via
     #   -r requirements/test.in
     #   pytest-cov
@@ -132,7 +137,7 @@ openedx-django-pyfs==3.5.0
     # via
     #   -r requirements/base.txt
     #   xblock
-packaging==23.2
+packaging==24.0
     # via
     #   pyproject-api
     #   pytest
@@ -154,7 +159,7 @@ pypng==0.20220715.0
     # via -r requirements/base.txt
 pyproject-api==1.6.1
     # via tox
-pytest==8.0.2
+pytest==8.1.1
     # via
     #   pytest-cov
     #   pytest-django
@@ -163,9 +168,9 @@ pytest-cov==4.1.0
     # via -r requirements/test.in
 pytest-django==4.8.0
     # via -r requirements/test.in
-pytest-rerunfailures==13.0
+pytest-rerunfailures==14.0
     # via -r requirements/test.in
-python-dateutil==2.8.2
+python-dateutil==2.9.0.post0
     # via
     #   -r requirements/base.txt
     #   arrow
@@ -178,7 +183,6 @@ python-slugify==8.0.4
 pytz==2024.1
     # via
     #   -r requirements/base.txt
-    #   django
     #   xblock
 pyyaml==6.0.1
     # via
@@ -189,11 +193,11 @@ requests==2.31.0
     # via
     #   -r requirements/base.txt
     #   cookiecutter
-rich==13.7.0
+rich==13.7.1
     # via
     #   -r requirements/base.txt
     #   cookiecutter
-s3transfer==0.10.0
+s3transfer==0.10.1
     # via
     #   -r requirements/base.txt
     #   boto3
@@ -221,9 +225,9 @@ tomli==2.0.1
     #   pyproject-api
     #   pytest
     #   tox
-tox==4.13.0
+tox==4.14.1
     # via -r requirements/test.in
-types-python-dateutil==2.8.19.20240106
+types-python-dateutil==2.9.0.20240316
     # via
     #   -r requirements/base.txt
     #   arrow
@@ -247,7 +251,7 @@ webob==1.8.7
     # via
     #   -r requirements/base.txt
     #   xblock
-xblock[django]==1.10.0
+xblock[django]==3.0.0
     # via
     #   -r requirements/base.txt
     #   acid-xblock
diff --git a/sample_xblocks/basic/content.py b/sample_xblocks/basic/content.py
index cf5e3e1f..efe0a7aa 100644
--- a/sample_xblocks/basic/content.py
+++ b/sample_xblocks/basic/content.py
@@ -160,7 +160,7 @@ def fallback_view(self, _view_name, context=None):
         return Fragment(Template(self.content).substitute(**context))
 
     @classmethod
-    def parse_xml(cls, node, runtime, keys, id_generator):
+    def parse_xml(cls, node, runtime, keys):
         """
         Parse the XML for an HTML block.
 
diff --git a/sample_xblocks/basic/problem.py b/sample_xblocks/basic/problem.py
index 3d834bbe..104a7f7d 100644
--- a/sample_xblocks/basic/problem.py
+++ b/sample_xblocks/basic/problem.py
@@ -57,7 +57,7 @@ class ProblemBlock(XBlock):
     has_children = True
 
     @classmethod
-    def parse_xml(cls, node, runtime, keys, id_generator):
+    def parse_xml(cls, node, runtime, keys):
         block = runtime.construct_xblock_from_class(cls, keys)
 
         # Find <script> children, turn them into script content.
@@ -65,7 +65,7 @@ def parse_xml(cls, node, runtime, keys, id_generator):
             if child.tag == "script":
                 block.script += child.text
             else:
-                block.runtime.add_node_as_child(block, child, id_generator)
+                block.runtime.add_node_as_child(block, child)
 
         return block
 
@@ -341,12 +341,12 @@ def set_arguments_from_xml(self, node):
         self.arguments = arguments
 
     @classmethod
-    def parse_xml(cls, node, runtime, keys, id_generator):
+    def parse_xml(cls, node, runtime, keys):
         """
         Parse the XML for a checker. A few arguments are handled specially,
         then the rest get the usual treatment.
         """
-        block = super().parse_xml(node, runtime, keys, id_generator)
+        block = super().parse_xml(node, runtime, keys)
         block.set_arguments_from_xml(node)
         return block
 
diff --git a/sample_xblocks/basic/test/test_problem.py b/sample_xblocks/basic/test/test_problem.py
index c51e3df5..dfd2541a 100644
--- a/sample_xblocks/basic/test/test_problem.py
+++ b/sample_xblocks/basic/test/test_problem.py
@@ -43,7 +43,7 @@ def test_problem_submission():
                 Number of upvotes matches entered string
             </equality_demo>
         </problem_demo>
-    """, runtime.id_generator)
+    """)
     problem = runtime.get_block(problem_usage_id)
     json_data = json.dumps({"vote_count": [{"name": "input", "value": "4"}]})
     resp = runtime.handle(problem, 'check', make_request(json_data))
diff --git a/workbench/__init__.py b/workbench/__init__.py
index 83bb4a07..2f3cc905 100644
--- a/workbench/__init__.py
+++ b/workbench/__init__.py
@@ -2,4 +2,4 @@
 Provide a djangoapp for XBlock development
 """
 
-__version__ = '0.8.0'
+__version__ = '0.9.0'
diff --git a/workbench/runtime.py b/workbench/runtime.py
index c979246a..b9d6aefb 100644
--- a/workbench/runtime.py
+++ b/workbench/runtime.py
@@ -265,7 +265,6 @@ def __init__(self, user_id=None):
                 services[service_name] = service
 
         super().__init__(ID_MANAGER, ID_MANAGER, services=services)
-        self.id_generator = ID_MANAGER
         self.user_id = user_id
 
     def get_user_role(self):
diff --git a/workbench/scenarios.py b/workbench/scenarios.py
index 1c03355e..a47e195e 100644
--- a/workbench/scenarios.py
+++ b/workbench/scenarios.py
@@ -35,7 +35,7 @@ def add_xml_scenario(scname, description, xml):
     # (because the generator will be contextual), so we
     # pass it explicitly to parse_xml_string.
     runtime.id_generator.set_scenario(slugify(description))
-    usage_id = runtime.parse_xml_string(xml, runtime.id_generator)
+    usage_id = runtime.parse_xml_string(xml)
     SCENARIOS[scname] = Scenario(description, usage_id, xml)
 
 
diff --git a/workbench/test/test_views.py b/workbench/test/test_views.py
index accf6779..a73bf218 100644
--- a/workbench/test/test_views.py
+++ b/workbench/test/test_views.py
@@ -119,7 +119,11 @@ def test_xblock_with_handler():
     assert the_data == "defxx"
 
 
-@temp_scenario(XBlock)
+class XBlockWithoutHandler(XBlock):
+    pass
+
+
+@temp_scenario(XBlockWithoutHandler)
 def test_xblock_without_handler():
     # Test that an XBlock without a handler raises an Exception
     # when we try to hit a handler on it
diff --git a/workbench/test_utils.py b/workbench/test_utils.py
index c062f6b7..6456b2cd 100644
--- a/workbench/test_utils.py
+++ b/workbench/test_utils.py
@@ -98,7 +98,7 @@ def load_scenario(self, xml_path):
             XBlock
         """
         block_id = self.runtime.parse_xml_string(
-            self.load_fixture_str(xml_path), self.runtime.id_generator
+            self.load_fixture_str(xml_path)
         )
         return self.runtime.get_block(block_id)