diff --git a/.ci/scripts/check_release.py b/.ci/scripts/check_release.py
index 611c882ca..6e0799952 100755
--- a/.ci/scripts/check_release.py
+++ b/.ci/scripts/check_release.py
@@ -99,9 +99,9 @@ def main(options: argparse.Namespace, template_config: dict[str, t.Any]) -> int:
 
     # Warning: This will not work if branch names contain "/" but we don't really care here.
     heads = [h.split("/")[-1] for h in repo.git.branch("--remote").split("\n")]
-    available_branches = [h for h in heads if re.fullmatch(RELEASE_BRANCH_REGEX, h)]
-    available_branches.sort(key=lambda ver: Version(ver))
-    available_branches.append(DEFAULT_BRANCH)
+    available_branches = sorted(
+        {h for h in heads if re.fullmatch(RELEASE_BRANCH_REGEX, h)}, key=lambda ver: Version(ver)
+    ) + [DEFAULT_BRANCH]
 
     branches = options.branches
     if branches == "supported":
diff --git a/.ci/scripts/check_requirements.py b/.ci/scripts/check_requirements.py
index c0c883a9d..0a309798e 100755
--- a/.ci/scripts/check_requirements.py
+++ b/.ci/scripts/check_requirements.py
@@ -9,7 +9,6 @@
 import warnings
 from packaging.requirements import Requirement
 
-
 CHECK_MATRIX = [
     ("pyproject.toml", True, True, True),
     ("requirements.txt", True, True, True),
diff --git a/.ci/scripts/collect_changes.py b/.ci/scripts/collect_changes.py
index f8a5446b5..f5c6b71a2 100755
--- a/.ci/scripts/collect_changes.py
+++ b/.ci/scripts/collect_changes.py
@@ -25,7 +25,6 @@
 from git import GitCommandError, Repo
 from packaging.version import parse as parse_version
 
-
 PYPI_PROJECT = "pulp_container"
 
 # Read Towncrier settings
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index ebdea47c8..8077ff2dc 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -46,7 +46,7 @@ jobs:
           pulpcore-manager openapi --file "api.json"
           pulpcore-manager openapi --bindings --component "container" --file "container-api.json"
       - name: "Upload Package whl"
-        uses: "actions/upload-artifact@v5"
+        uses: "actions/upload-artifact@v7"
         with:
           name: "plugin_package"
           path: "pulp_container/dist/"
@@ -54,7 +54,7 @@ jobs:
           retention-days: 5
           overwrite: true
       - name: "Upload API specs"
-        uses: "actions/upload-artifact@v5"
+        uses: "actions/upload-artifact@v7"
         with:
           name: "api_spec"
           path: |
@@ -73,7 +73,7 @@ jobs:
           GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
           GITHUB_CONTEXT: "${{ github.event.pull_request.commits_url }}"
       - name: "Upload python client packages"
-        uses: "actions/upload-artifact@v5"
+        uses: "actions/upload-artifact@v7"
         with:
           name: "python-client.tar"
           path: |
@@ -82,7 +82,7 @@ jobs:
           retention-days: 5
           overwrite: true
       - name: "Upload python client docs"
-        uses: "actions/upload-artifact@v5"
+        uses: "actions/upload-artifact@v7"
         with:
           name: "python-client-docs.tar"
           path: |
@@ -100,7 +100,7 @@ jobs:
           GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
           GITHUB_CONTEXT: "${{ github.event.pull_request.commits_url }}"
       - name: "Upload Ruby client"
-        uses: "actions/upload-artifact@v5"
+        uses: "actions/upload-artifact@v7"
         with:
           name: "ruby-client.tar"
           path: |
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 3133808d2..8c28873f2 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -30,7 +30,7 @@ jobs:
       id-token: "write"
 
     steps:
-      - uses: "actions/download-artifact@v4"
+      - uses: "actions/download-artifact@v8"
         with:
           name: "plugin_package"
           path: "dist/"
@@ -53,7 +53,7 @@ jobs:
           path: "pulp_container"
 
       - name: "Download Python client"
-        uses: "actions/download-artifact@v4"
+        uses: "actions/download-artifact@v8"
         with:
           name: "python-client.tar"
           path: "pulp_container/"
@@ -82,7 +82,7 @@ jobs:
           path: "pulp_container"
 
       - name: "Download Ruby client"
-        uses: "actions/download-artifact@v4"
+        uses: "actions/download-artifact@v8"
         with:
           name: "ruby-client.tar"
           path: "pulp_container/"
diff --git a/.github/workflows/scripts/stage-changelog-for-default-branch.py b/.github/workflows/scripts/stage-changelog-for-default-branch.py
index dd0a0247b..515ef60fc 100755
--- a/.github/workflows/scripts/stage-changelog-for-default-branch.py
+++ b/.github/workflows/scripts/stage-changelog-for-default-branch.py
@@ -12,16 +12,13 @@
 from git import Repo
 from git.exc import GitCommandError
 
-
-helper = textwrap.dedent(
-    """\
+helper = textwrap.dedent("""\
         Stage the changelog for a release on main branch.
 
         Example:
             $ python .github/workflows/scripts/stage-changelog-for-default-branch.py 3.4.0
 
-    """
-)
+    """)
 
 parser = argparse.ArgumentParser(formatter_class=argparse.RawTextHelpFormatter, description=helper)
 
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index fb596b03b..662b3038f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -122,7 +122,7 @@ jobs:
           docker logs pulp 2>&1 | grep -i pulpcore.deprecation | tee deprecations-${{ matrix.env.TEST }}.txt
 
       - name: "Upload Deprecations"
-        uses: "actions/upload-artifact@v5"
+        uses: "actions/upload-artifact@v7"
         with:
           name: "deprecations-${{ matrix.env.TEST }}"
           path: "pulp_container/deprecations-${{ matrix.env.TEST }}.txt"
diff --git a/lint_requirements.txt b/lint_requirements.txt
index 959a5fc2d..06aee86c5 100644
--- a/lint_requirements.txt
+++ b/lint_requirements.txt
@@ -5,7 +5,7 @@
 #
 # For more info visit https://github.com/pulp/plugin_template
 
-black==24.3.0
+black~=26.3  # Pin style to the year. https://black.readthedocs.io/en/stable/faq.html#how-stable-is-black-s-style
 bump-my-version
 check-manifest
 flake8
diff --git a/pulp_container/app/models.py b/pulp_container/app/models.py
index 8e7695c65..7de5dfeb4 100644
--- a/pulp_container/app/models.py
+++ b/pulp_container/app/models.py
@@ -34,7 +34,6 @@
 from pulp_container.app.utils import get_content_data
 from pulp_container.constants import MEDIA_TYPE, SIGNATURE_TYPE
 
-
 logger = getLogger(__name__)
 
 
diff --git a/pulp_container/app/serializers.py b/pulp_container/app/serializers.py
index 637b92e35..75a7a6c19 100644
--- a/pulp_container/app/serializers.py
+++ b/pulp_container/app/serializers.py
@@ -253,25 +253,21 @@ class ContainerRemoteSerializer(RemoteSerializer):
         child=serializers.CharField(max_length=255),
         allow_null=True,
         required=False,
-        help_text=_(
-            """
+        help_text=_("""
             A list of tags to include during sync.
             Wildcards *, ? are recognized.
             'include_tags' is evaluated before 'exclude_tags'.
-            """
-        ),
+            """),
     )
     exclude_tags = serializers.ListField(
         child=serializers.CharField(max_length=255),
         allow_null=True,
         required=False,
-        help_text=_(
-            """
+        help_text=_("""
             A list of tags to exclude during sync.
             Wildcards *, ? are recognized.
             'exclude_tags' is evaluated after 'include_tags'.
-            """
-        ),
+            """),
     )
 
     policy = serializers.ChoiceField(
diff --git a/pulp_container/app/tasks/synchronize.py b/pulp_container/app/tasks/synchronize.py
index 886dd5928..792c10c0d 100644
--- a/pulp_container/app/tasks/synchronize.py
+++ b/pulp_container/app/tasks/synchronize.py
@@ -13,7 +13,6 @@
 from .sync_stages import ContainerFirstStage, ContainerContentSaver
 from pulp_container.app.models import ContainerRemote, ContainerRepository
 
-
 log = logging.getLogger(__name__)
 
 
diff --git a/pulp_container/app/urls.py b/pulp_container/app/urls.py
index 864f0b2ed..c1f55cb84 100644
--- a/pulp_container/app/urls.py
+++ b/pulp_container/app/urls.py
@@ -14,7 +14,6 @@
     VersionView,
 )
 
-
 router = SimpleRouter(trailing_slash=False)
 
 head_route = Route(
diff --git a/pulp_container/app/viewsets.py b/pulp_container/app/viewsets.py
index e42be79f9..cfbcb5f9a 100644
--- a/pulp_container/app/viewsets.py
+++ b/pulp_container/app/viewsets.py
@@ -45,7 +45,6 @@
 
 from pulp_container.app import models, serializers, tasks
 
-
 log = logging.getLogger(__name__)
 
 
diff --git a/pulp_container/constants.py b/pulp_container/constants.py
index 8d6463481..a98459aaf 100644
--- a/pulp_container/constants.py
+++ b/pulp_container/constants.py
@@ -1,6 +1,5 @@
 from types import SimpleNamespace
 
-
 MEDIA_TYPE = SimpleNamespace(
     MANIFEST_V1="application/vnd.docker.distribution.manifest.v1+json",
     MANIFEST_V1_SIGNED="application/vnd.docker.distribution.manifest.v1+prettyjws",
diff --git a/pulp_container/tests/functional/api/test_build_images.py b/pulp_container/tests/functional/api/test_build_images.py
index 52e154907..079e3c64f 100644
--- a/pulp_container/tests/functional/api/test_build_images.py
+++ b/pulp_container/tests/functional/api/test_build_images.py
@@ -18,13 +18,11 @@
 def containerfile_name():
     """A fixture for a basic container file used for building images."""
     with NamedTemporaryFile() as containerfile:
-        containerfile.write(
-            b"""FROM busybox:latest
+        containerfile.write(b"""FROM busybox:latest
 # Copy a file using COPY statement. Use the relative path specified in the 'artifacts' parameter.
 COPY foo/bar/example.txt /tmp/inside-image.txt
 # Print the content of the file when the container starts
-CMD ["cat", "/tmp/inside-image.txt"]"""
-        )
+CMD ["cat", "/tmp/inside-image.txt"]""")
         containerfile.flush()
         yield containerfile.name