diff --git a/.gitignore b/.gitignore
index db3f425..adc2d7a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,5 +3,6 @@
 .eggs
 *.egg-info
 .tox
+.coverage*
 htmldocs
 doc/topics.rst
diff --git a/doc/requirements.txt b/doc/requirements.txt
index c67f31f..9b3e8fc 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,4 +1,3 @@
 cloud_sptheme
-nose
-fedmsg
+fedmsg @ git+https://github.com/fedora-infra/fedmsg.git@develop
 mako
diff --git a/fedmsg_meta_umb/doc_utilities.py b/fedmsg_meta_umb/doc_utilities.py
index 70609d6..508eac4 100644
--- a/fedmsg_meta_umb/doc_utilities.py
+++ b/fedmsg_meta_umb/doc_utilities.py
@@ -2,14 +2,14 @@
 
 This code:
 
-- Uses :mod:`nose` to find all the fedmsg.meta unittests.
+- Uses :mod:`unittest` to find all the fedmsg.meta unittests.
 - Extracts all the metadata and docstrings from those tests.
 - Uses all that to generate a giant .rst document of all the fedmsg
   topics and what they are about with example messages.
 
 """
 
-import nose
+import unittest
 import pprint
 import textwrap
 import uuid
@@ -103,10 +103,20 @@ def datagrepper_link(topic):
 
 
 def load_classes(module):
-    testdir = os.path.dirname(os.path.abspath(__file__)) + '/tests'
-    suitelist = map(list, nose.loader.defaultTestLoader().loadTestsFromDir(testdir))
-    clslist = [cls for suite in suitelist for cls in suite]
-    return clslist
+    suite = unittest.defaultTestLoader.discover(
+        os.path.dirname(module.__file__),
+        top_level_dir=os.path.dirname(__file__),
+    )
+
+    def _classes(s):
+        if isinstance(s, unittest.TestCase):
+            yield s.__class__
+        else:
+            for t in s:
+                yield from _classes(t)
+
+    return set(_classes(suite))
+
 
 def make_topics_doc(output_dir):
 
@@ -117,13 +127,13 @@ def make_topics_doc(output_dir):
     test_classes = load_classes(source_module)
 
     # Strip out the conglomerator tests which are more complicated.
-    test_classes = [cls for cls in test_classes if hasattr(cls.context, 'msg')]
+    test_classes = [cls for cls in test_classes if hasattr(cls, 'msg')]
 
     write(fname, header)
 
     for cls in test_classes:
-        if cls.context.msg is not Unspecified:
-            cls.__topic = cls.context.msg['topic'].split('.', 1)[-1]
+        if cls.msg is not Unspecified:
+            cls.__topic = cls.msg['topic'].split('.', 1)[-1]
         else:
             cls.__topic = None
 
@@ -131,7 +141,7 @@ def make_topics_doc(output_dir):
 
     seen = []
     for cls in test_classes:
-        if cls.context.msg is not Unspecified:
+        if cls.msg is not Unspecified:
             topic = cls.__topic
 
             # You can also exclude a test from the docs with nodoc = True
@@ -149,18 +159,15 @@ def make_topics_doc(output_dir):
             write(fname, "~" * len(topic))
             write(fname)
 
-            # I would use __doc__ here, but something that nose is doing is
-            # stripping the __doc__ from my original unit tests.  Instead,
-            # we'll use our own 'doc' attribute which is a little clumsy.
-            if getattr(cls.context, 'doc', None):
-                write(fname, textwrap.dedent("    " + cls.context.doc.strip()))
+            if cls.__doc__:
+                write(fname, textwrap.dedent("    " + cls.__doc__.strip()))
                 write(fname)
 
-            write(fname, datagrepper_link(cls.context.msg['topic']))
+            write(fname, datagrepper_link(cls.msg['topic']))
             write(fname)
 
             write(fname, ".. code-block:: python")
-            write(fname, '\n    ' + pprint.pformat(cls.context.msg, indent=2)
+            write(fname, '\n    ' + pprint.pformat(cls.msg, indent=2)
                   .replace('\n', '\n    '))
             write(fname)
 
@@ -168,20 +175,20 @@ def make_topics_doc(output_dir):
             uid = str(uuid.uuid4())
             icon_inline = Unspecified
             secondary_icon_inline = Unspecified
-            if cls.context.expected_icon is not Unspecified:
+            if cls.expected_icon is not Unspecified:
                 icon_inline = "|%s-icon|" % uid
-            if cls.context.expected_secondary_icon is not Unspecified:
+            if cls.expected_secondary_icon is not Unspecified:
                 secondary_icon_inline = "|%s-secondary_icon|" % uid
 
             # A bunch of data for the template.
             kwargs = dict(
-                link=cls.context.expected_link,
-                title=cls.context.expected_title,
-                subtitle=cls.context.expected_subti,
-                usernames=cls.context.expected_usernames,
-                agent=cls.context.expected_agent,
-                packages=cls.context.expected_packages,
-                objects=cls.context.expected_objects,
+                link=cls.expected_link,
+                title=cls.expected_title,
+                subtitle=cls.expected_subti,
+                usernames=cls.expected_usernames,
+                agent=cls.expected_agent,
+                packages=cls.expected_packages,
+                objects=cls.expected_objects,
                 icon_inline=icon_inline,
                 secondary_icon_inline=secondary_icon_inline,
             )
@@ -194,8 +201,8 @@ def length(value):
             longest = max([length(value) for value in kwargs.values()])
 
             write(fname, metadata_template.render(
-                icon=cls.context.expected_icon,
-                secondary_icon=cls.context.expected_secondary_icon,
+                icon=cls.expected_icon,
+                secondary_icon=cls.expected_secondary_icon,
                 Unspecified=Unspecified,
                 longest=longest,
                 **kwargs
diff --git a/python-fedmsg-meta-umb.spec b/python-fedmsg-meta-umb.spec
index 2ee94d7..e8b3125 100644
--- a/python-fedmsg-meta-umb.spec
+++ b/python-fedmsg-meta-umb.spec
@@ -12,7 +12,6 @@ Source0:        %{srcname}-%{version}.tar.xz
 
 BuildArch:      noarch
 BuildRequires:  python3-devel
-BuildRequires:  python3-nose
 BuildRequires:  python3-fedmsg
 BuildRequires:  python3-mako
 BuildRequires:  python3-cloud-sptheme
diff --git a/setup.py b/setup.py
index 582a204..2469856 100755
--- a/setup.py
+++ b/setup.py
@@ -24,13 +24,8 @@
 long_description = long_description.split('split here', 1)[1]
 f.close()
 
-setup_requires = [
-]
 install_requires = [
-    'fedmsg',
-]
-tests_require = [
-    'nose',
+    'fedmsg @ git+https://github.com/fedora-infra/fedmsg.git@develop',
 ]
 
 entry_points = {
@@ -74,10 +69,7 @@
     author_email='mikeb@redhat.com',
     url='https://github.com/release-engineering/fedmsg_meta_umb/',
     license='LGPLv2+',
-    setup_requires=setup_requires,
     install_requires=install_requires,
-    tests_require=tests_require,
-    test_suite='nose.collector',
     packages=find_packages(),
     include_package_data=True,
     zip_safe=False,
diff --git a/tox.ini b/tox.ini
index 0e16179..582a32e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,16 +1,23 @@
 [tox]
-envlist = flake8,py{38,39},docs
+envlist = flake8,py312,docs
 downloadcache = {toxworkdir}/_download/
 
 [testenv]
 deps =
-    fedmsg
-    nose
     coverage
 commands =
-    nosetests {posargs}
+    coverage run -m unittest {posargs}
+    coverage report
+
+[coverage:run]
+branch = true
+
+[coverage:report]
+show_missing = true
+skip_empty = true
 
 [testenv:flake8]
+skip_install = true
 deps=
     flake8
 commands=
@@ -19,9 +26,6 @@ commands=
 
 [testenv:docs]
 deps =
-    cloud_sptheme
-    nose
-    fedmsg
-    mako
+    -r doc/requirements.txt
 commands =
     sphinx-build doc/ htmldocs/