diff --git a/README.md b/README.md
index 69de8329..253f5c7c 100644
--- a/README.md
+++ b/README.md
@@ -52,6 +52,7 @@ probably want the following:
         uv run ./manage.py loaddata devel/fixtures/*.json
         uv run ./manage.py loaddata mirrors/fixtures/*.json
         uv run ./manage.py loaddata releng/fixtures/*.json
+        uv run ./manage.py loaddata todolists/fixtures/*.json
 7. Use the following commands to start a service instance
 
         uv run ./manage.py runserver
diff --git a/templates/todolists/view.html b/templates/todolists/view.html
index 5b08ab47..26ff6549 100644
--- a/templates/todolists/view.html
+++ b/templates/todolists/view.html
@@ -75,6 +75,7 @@ <h3>Filter Todo List Packages</h3>
                 <th>Name</th>
                 <th>Current Version</th>
                 <th>Staging Version</th>
+                <th>Testing Version</th>
                 <th>Maintainers</th>
                 <th>Status</th>
                 <th>Last Touched By</th>
@@ -96,6 +97,9 @@ <h3>Filter Todo List Packages</h3>
                 {% with staging=pkg.staging %}
                 <td>{% if staging %}{% pkg_details_link staging staging.full_version %}{% endif %}</td>
                 {% endwith %}
+                {% with testing=pkg.testing %}
+                <td>{% if testing %}{% pkg_details_link testing testing.full_version %}{% endif %}</td>
+                {% endwith %}
                 <td>{{ pkg.maintainers|join:', ' }}</td>
                 <td>
                     {% if perms.todolists.change_todolistpackage %}
diff --git a/todolists/fixtures/todolist.json b/todolists/fixtures/todolist.json
new file mode 100644
index 00000000..9802f097
--- /dev/null
+++ b/todolists/fixtures/todolist.json
@@ -0,0 +1,158 @@
+[
+    {
+        "model": "auth.user",
+        "pk": 1,
+        "fields": {
+            "username": "developer",
+            "first_name": "Test",
+            "last_name": "Developer",
+            "email": "developer@archlinux.org",
+            "password": "pbkdf2_sha256$1000000$5mOVHaWggfkqKGsKsVpWH8$kS2tNunBSv+rrDohZXeuP9L/kX8oDe09vzab+m3WQXo=",
+            "is_staff": true,
+            "is_active": true,
+            "is_superuser": true,
+            "date_joined": "2024-01-01T00:00:00Z",
+            "last_login": null,
+            "groups": [],
+            "user_permissions": []
+        }
+    },
+    {
+        "model": "main.package",
+        "pk": 6,
+        "fields": {
+            "repo": 3,
+            "arch": 3,
+            "pkgname": "linux",
+            "pkgbase": "linux",
+            "pkgver": "6.9.1",
+            "pkgrel": "2",
+            "epoch": 0,
+            "pkgdesc": "The Linux kernel and modules",
+            "url": "https://www.kernel.org/",
+            "filename": "linux-6.9.1-2-x86_64.pkg.tar.zst",
+            "compressed_size": 72000000,
+            "installed_size": 91000000,
+            "build_date": "2024-05-20T10:00:00Z",
+            "last_update": "2024-05-20T10:00:00Z",
+            "files_last_update": null,
+            "created": "2024-05-20T10:00:00Z",
+            "packager_str": "Test Developer <developer@archlinux.org>",
+            "packager": null,
+            "signature_bytes": null,
+            "flag_date": null
+        }
+    },
+    {
+        "model": "main.package",
+        "pk": 7,
+        "fields": {
+            "repo": 16,
+            "arch": 3,
+            "pkgname": "systemd",
+            "pkgbase": "systemd",
+            "pkgver": "256.1",
+            "pkgrel": "1",
+            "epoch": 0,
+            "pkgdesc": "system and service manager",
+            "url": "https://www.github.com/systemd/systemd",
+            "filename": "systemd-256.1-1-x86_64.pkg.tar.zst",
+            "compressed_size": 4100000,
+            "installed_size": 19000000,
+            "build_date": "2024-05-22T08:00:00Z",
+            "last_update": "2024-05-22T08:00:00Z",
+            "files_last_update": null,
+            "created": "2024-05-22T08:00:00Z",
+            "packager_str": "Test Developer <developer@archlinux.org>",
+            "packager": null,
+            "signature_bytes": null,
+            "flag_date": null
+        }
+    },
+    {
+        "model": "todolists.todolist",
+        "pk": 1,
+        "fields": {
+            "slug": "glibc-2-40-rebuild",
+            "name": "glibc 2.40 rebuild",
+            "description": "Rebuild of packages affected by the glibc 2.40 soname bump.",
+            "creator": 1,
+            "created": "2024-05-20T09:00:00Z",
+            "kind": 0,
+            "last_modified": "2024-05-22T08:00:00Z",
+            "raw": "linux\ncoreutils\npacman\nsystemd"
+        }
+    },
+    {
+        "model": "todolists.todolistpackage",
+        "pk": 1,
+        "fields": {
+            "todolist": 1,
+            "pkg": 1,
+            "pkgname": "linux",
+            "pkgbase": "linux",
+            "arch": 3,
+            "repo": 1,
+            "created": "2024-05-20T09:00:00Z",
+            "last_modified": "2024-05-20T09:00:00Z",
+            "removed": null,
+            "status": 0,
+            "user": null,
+            "comments": null
+        }
+    },
+    {
+        "model": "todolists.todolistpackage",
+        "pk": 2,
+        "fields": {
+            "todolist": 1,
+            "pkg": 2,
+            "pkgname": "coreutils",
+            "pkgbase": "coreutils",
+            "arch": 3,
+            "repo": 1,
+            "created": "2024-05-20T09:00:00Z",
+            "last_modified": "2024-05-21T14:30:00Z",
+            "removed": null,
+            "status": 1,
+            "user": 1,
+            "comments": null
+        }
+    },
+    {
+        "model": "todolists.todolistpackage",
+        "pk": 3,
+        "fields": {
+            "todolist": 1,
+            "pkg": 4,
+            "pkgname": "pacman",
+            "pkgbase": "pacman",
+            "arch": 3,
+            "repo": 1,
+            "created": "2024-05-20T09:00:00Z",
+            "last_modified": "2024-05-22T10:00:00Z",
+            "removed": null,
+            "status": 2,
+            "user": 1,
+            "comments": null
+        }
+    },
+    {
+        "model": "todolists.todolistpackage",
+        "pk": 4,
+        "fields": {
+            "todolist": 1,
+            "pkg": 5,
+            "pkgname": "systemd",
+            "pkgbase": "systemd",
+            "arch": 3,
+            "repo": 1,
+            "created": "2024-05-20T09:00:00Z",
+            "last_modified": "2024-05-20T09:00:00Z",
+            "removed": null,
+            "status": 0,
+            "user": null,
+            "comments": null
+        }
+    }
+]
diff --git a/todolists/tests/test_utils.py b/todolists/tests/test_utils.py
new file mode 100644
index 00000000..0f84dcfe
--- /dev/null
+++ b/todolists/tests/test_utils.py
@@ -0,0 +1,103 @@
+import pytest
+from django.utils.timezone import now
+
+from main.models import Package, Repo
+from todolists.models import TodolistPackage
+from todolists.utils import attach_staging, attach_testing
+
+
+def make_package(pkgname, repo, arch):
+    return Package.objects.create(
+        pkgname=pkgname,
+        pkgbase=pkgname,
+        pkgver='1.0',
+        pkgrel='1',
+        epoch=0,
+        pkgdesc='Test package',
+        url='https://example.com',
+        filename=f'{pkgname}-1.0-1-x86_64.pkg.tar.zst',
+        compressed_size=1000,
+        installed_size=2000,
+        build_date=now(),
+        last_update=now(),
+        created=now(),
+        packager_str='Test Packager',
+        repo=repo,
+        arch=arch,
+    )
+
+
+@pytest.fixture
+def stable_pkg(repos, package):
+    return Package.objects.get(pkgname='linux')
+
+
+@pytest.fixture
+def todolist_with_linux(todolist, stable_pkg, user):
+    arch = stable_pkg.arch
+    repo = stable_pkg.repo
+    tlpkg = TodolistPackage.objects.create(
+        todolist=todolist,
+        pkg=stable_pkg,
+        pkgname=stable_pkg.pkgname,
+        pkgbase=stable_pkg.pkgbase,
+        arch=arch,
+        repo=repo,
+        user=user,
+    )
+    yield todolist
+    tlpkg.delete()
+
+
+def test_attach_testing_no_testing_pkg(todolist_with_linux):
+    todolist = todolist_with_linux
+    attach_testing(todolist.packages(), todolist.pk)
+    for pkg in todolist.packages():
+        assert pkg.testing is None
+
+
+def test_attach_testing_finds_testing_pkg(todolist_with_linux):
+    todolist = todolist_with_linux
+    stable_pkg = Package.objects.get(pkgname='linux', repo__testing=False, repo__staging=False)
+    testing_repo = Repo.objects.get(name='Core-Testing')
+
+    testing_pkg = make_package('linux', testing_repo, stable_pkg.arch)
+    try:
+        attach_testing(todolist.packages(), todolist.pk)
+        for pkg in todolist.packages():
+            if pkg.pkgname == 'linux':
+                assert pkg.testing is not None
+                assert pkg.testing.repo.testing is True
+    finally:
+        testing_pkg.delete()
+
+
+def test_attach_testing_ignores_staging_repos(todolist_with_linux):
+    todolist = todolist_with_linux
+    stable_pkg = Package.objects.get(pkgname='linux', repo__testing=False, repo__staging=False)
+    staging_repo = Repo.objects.get(name='Core-Staging')
+
+    staging_pkg = make_package('linux', staging_repo, stable_pkg.arch)
+    try:
+        attach_testing(todolist.packages(), todolist.pk)
+        for pkg in todolist.packages():
+            if pkg.pkgname == 'linux':
+                assert pkg.testing is None
+    finally:
+        staging_pkg.delete()
+
+
+def test_attach_staging_still_works(todolist_with_linux):
+    todolist = todolist_with_linux
+    stable_pkg = Package.objects.get(pkgname='linux', repo__testing=False, repo__staging=False)
+    staging_repo = Repo.objects.get(name='Core-Staging')
+
+    staging_pkg = make_package('linux', staging_repo, stable_pkg.arch)
+    try:
+        attach_staging(todolist.packages(), todolist.pk)
+        for pkg in todolist.packages():
+            if pkg.pkgname == 'linux':
+                assert pkg.staging is not None
+                assert pkg.staging.repo.staging is True
+    finally:
+        staging_pkg.delete()
diff --git a/todolists/utils.py b/todolists/utils.py
index eee4c07d..11836500 100644
--- a/todolists/utils.py
+++ b/todolists/utils.py
@@ -39,21 +39,34 @@ def get_annotated_todolists(incomplete_only=False):
     return lists
 
 
-def attach_staging(packages, list_id):
-    '''Look for any staging version of the packages provided and attach them
-    to the 'staging' attribute on each package if found.'''
+def _attach_repo_version(packages, list_id, kind):
+    '''Look for related packages in repos flagged by kind and attach them.
+
+    kind is a Repo boolean field name used as repo__{kind}=True. Only
+    'staging' and 'testing' are used; they set package.staging or
+    package.testing for the todolist templates.
+    '''
     pkgnames = TodolistPackage.objects.filter(
         todolist_id=list_id).values('pkgname')
-    staging_pkgs = Package.objects.normal().filter(repo__staging=True,
-                                                   pkgname__in=pkgnames)
-    # now build a lookup dict to attach to the correct package
-    lookup = {(p.pkgname, p.arch): p for p in staging_pkgs}
+    related_pkgs = Package.objects.normal().filter(
+        **{f'repo__{kind}': True},
+        pkgname__in=pkgnames,
+    )
+    lookup = {(p.pkgname, p.arch): p for p in related_pkgs}
 
-    annotated = []
     for package in packages:
-        in_staging = lookup.get((package.pkgname, package.arch), None)
-        package.staging = in_staging
+        setattr(package, kind, lookup.get((package.pkgname, package.arch)))
+
+
+def attach_staging(packages, list_id):
+    '''Look for any staging version of the packages provided and attach them
+    to the 'staging' attribute on each package if found.'''
+    _attach_repo_version(packages, list_id, 'staging')
+
 
-    return annotated
+def attach_testing(packages, list_id):
+    '''Look for any testing version of the packages provided and attach them
+    to the 'testing' attribute on each package if found.'''
+    _attach_repo_version(packages, list_id, 'testing')
 
 # vim: set ts=4 sw=4 et:
diff --git a/todolists/views.py b/todolists/views.py
index 5009ff23..d51c177e 100644
--- a/todolists/views.py
+++ b/todolists/views.py
@@ -16,7 +16,7 @@
 from packages.utils import PackageJSONEncoder, attach_maintainers
 
 from .models import Todolist, TodolistPackage
-from .utils import attach_staging, get_annotated_todolists
+from .utils import attach_staging, attach_testing, get_annotated_todolists
 
 
 class TodoListForm(forms.ModelForm):
@@ -65,6 +65,7 @@ def view(request, slug):
     # so accessing maintainers in the template is now cheap
     attach_maintainers(todolist.packages())
     attach_staging(todolist.packages(), todolist.pk)
+    attach_testing(todolist.packages(), todolist.pk)
     arches = {tp.arch for tp in todolist.packages()}
     repos = {tp.repo for tp in todolist.packages()}
     context = {