diff --git a/master-web/master.cfg b/master-web/master.cfg
index e51cce9b..68685760 100644
--- a/master-web/master.cfg
+++ b/master-web/master.cfg
@@ -15,104 +15,120 @@ from datetime import timedelta
 
 sys.setrecursionlimit(10000)
 
-sys.path.append(os.getcwd() + '/..')
+sys.path.append(os.getcwd() + "/..")
 from constants import *
 
 c = BuildmasterConfig = {}
 
 # Load the slave, database passwords and 3rd-party tokens from an external
 # private file, so that the rest of the configuration can be public.
-config = { "private": { } }
-exec(open("../master-private.cfg").read(), config, { })
+config = {"private": {}}
+exec(open("../master-private.cfg").read(), config, {})
 
 ####### PROJECT IDENTITY
 
-c['title'] = os.getenv('TITLE', default="MariaDB CI")
-c['titleURL'] = os.getenv('TITLE_URL', default="https://github.com/MariaDB/server")
-c['buildbotURL'] = os.getenv('BUILDMASTER_URL', default="https://buildbot.mariadb.org/")
+c["title"] = os.getenv("TITLE", default="MariaDB CI")
+c["titleURL"] = os.getenv("TITLE_URL", default="https://github.com/MariaDB/server")
+c["buildbotURL"] = os.getenv("BUILDMASTER_URL", default="https://buildbot.mariadb.org/")
 
-port = int(os.getenv('PORT', default="8010"))
+port = int(os.getenv("PORT", default="8010"))
 # minimalistic config to activate web UI
-c['www'] = dict(port=port, plugins=dict(waterfall_view={}, console_view={}, grid_view={}), custom_templates_dir='templates')
+c["www"] = dict(
+    port=port,
+    plugins=dict(waterfall_view={}, console_view={}, grid_view={}),
+    custom_templates_dir="templates",
+)
 
 # Github Auth, allow control for MariaDB affiliated accounts
-c['www']['authz'] = util.Authz(
-  allowRules=[
-    util.AnyControlEndpointMatcher(role="MariaDB", defaultDeny=True)
-  ],
-  roleMatchers=[
-    util.RolesFromGroups()
-  ]
+c["www"]["authz"] = util.Authz(
+    allowRules=[util.AnyControlEndpointMatcher(role="MariaDB", defaultDeny=True)],
+    roleMatchers=[util.RolesFromGroups()],
+)
+c["www"]["auth"] = util.GitHubAuth(
+    config["private"]["gh_mdbauth"]["client"], config["private"]["gh_mdbauth"]["secret"]
 )
-c['www']['auth'] = util.GitHubAuth(config["private"]["gh_mdbauth"]["client"], config["private"]["gh_mdbauth"]["secret"])
 
 # Sponsor plugin
 exec(open("../sponsor.py").read())
 
 ####### DB URL
-c['db'] = {
-    'db_url' : config["private"]["db_url"]
-}
+c["db"] = {"db_url": config["private"]["db_url"]}
 
 ####### Disable net usage reports from being sent to buildbot.net
-c['buildbotNetUsageData'] = None
+c["buildbotNetUsageData"] = None
 
 ####### GitHub hooks
 
 # GitHub webhook receiver
-c['www']['change_hook_dialects'] = {
-        'github': {
-                'secret': config["private"]["gh_secret"],
-                'strict': True,
-        }
+c["www"]["change_hook_dialects"] = {
+    "github": {
+        "secret": config["private"]["gh_secret"],
+        "strict": True,
+    }
 }
 
-c['www']['ui_default_config'] = {
-    'Grid.changeFetchLimit': 5,
-    'Grid.buildFetchLimit': 50,
+c["www"]["ui_default_config"] = {
+    "Grid.changeFetchLimit": 5,
+    "Grid.buildFetchLimit": 50,
 }
 
-c['logEncoding'] = 'utf-8'
+c["logEncoding"] = "utf-8"
 
-c['multiMaster'] = True
+c["multiMaster"] = True
 
 # Need to enable multimaster aware mq. Wamp is the only option for now.
-c['mq'] = {
-    'type' : 'wamp',
-    'router_url': os.getenv('MQ_ROUTER_URL', default='ws://localhost:8085/ws'),
-    'realm': 'realm1',
+c["mq"] = {
+    "type": "wamp",
+    "router_url": os.getenv("MQ_ROUTER_URL", default="ws://localhost:8085/ws"),
+    "realm": "realm1",
     # valid are: none, critical, error, warn, info, debug, trace
-    'wamp_debug_level' : 'info'
+    "wamp_debug_level": "info",
 }
 
 # git branch filter using fnmatch
 import fnmatch
+
+
 def upstream_branch_fn(branch):
-    return branch in branches_main or \
-      fnmatch.fnmatch(branch, 'bb-*') or \
-      fnmatch.fnmatch(branch, 'st-*') or \
-      fnmatch.fnmatch(branch, 'prot-*') or \
-      fnmatch.fnmatch(branch, "refs/pull/*") or \
-      fnmatch.fnmatch(branch, "preview-10.*")
+    return (
+        branch in branches_main
+        or fnmatch.fnmatch(branch, "bb-*")
+        or fnmatch.fnmatch(branch, "st-*")
+        or fnmatch.fnmatch(branch, "prot-*")
+        or fnmatch.fnmatch(branch, "refs/pull/*")
+        or fnmatch.fnmatch(branch, "preview-10.*")
+    )
+
+
 def staging_branch_fn(branch):
-    return fnmatch.fnmatch(branch, 'st-*')
+    return fnmatch.fnmatch(branch, "st-*")
+
+
 def fnmatch_any(s, list_of_patterns):
     return any(fnmatch.fnmatch(s, p) for p in list_of_patterns)
 
-c['schedulers'] = []
+
+c["schedulers"] = []
 
 # upstream scheduling
 schedulerTarball = schedulers.AnyBranchScheduler(
-        name="s_upstream_tarball",
-        change_filter=util.ChangeFilter(repository="https://github.com/MariaDB/server", branch_fn=upstream_branch_fn),
-        treeStableTimer=60,
-        builderNames=["tarball-docker"])
-c['schedulers'].append(schedulerTarball)
+    name="s_upstream_tarball",
+    change_filter=util.ChangeFilter(
+        repository="https://github.com/MariaDB/server", branch_fn=upstream_branch_fn
+    ),
+    treeStableTimer=60,
+    builderNames=["tarball-docker"],
+)
+c["schedulers"].append(schedulerTarball)
 
 if os.getenv("ENVIRON") == "DEV":
     schedulerTarball = schedulers.AnyBranchScheduler(
-            name="s_faust_tarball",
-            change_filter=util.ChangeFilter(repository="https://github.com/fauust/mariadb-server", branch_fn=upstream_branch_fn),
-            treeStableTimer=60,
-            builderNames=["tarball-docker"])
-    c['schedulers'].append(schedulerTarball)
+        name="s_faust_tarball",
+        change_filter=util.ChangeFilter(
+            repository="https://github.com/fauust/mariadb-server",
+            branch_fn=upstream_branch_fn,
+        ),
+        treeStableTimer=60,
+        builderNames=["tarball-docker"],
+    )
+    c["schedulers"].append(schedulerTarball)