diff --git a/weblate/billing/models.py b/weblate/billing/models.py
index 4bc9f5df5692..604100073cf3 100644
--- a/weblate/billing/models.py
+++ b/weblate/billing/models.py
@@ -193,7 +193,7 @@ class Billing(models.Model):
     # with payment processor
     payment = models.JSONField(editable=False, default=dict, encoder=DjangoJSONEncoder)
 
-    objects = BillingManager.from_queryset(BillingQuerySet)()
+    objects: BillingQuerySet = BillingManager.from_queryset(BillingQuerySet)()
 
     class Meta:
         verbose_name = "Customer billing"
diff --git a/weblate/wladmin/models.py b/weblate/wladmin/models.py
index f7c04389e86e..b076c98f3581 100644
--- a/weblate/wladmin/models.py
+++ b/weblate/wladmin/models.py
@@ -328,12 +328,12 @@ class SupportStatusDict(TypedDict):
 
 def get_support_status(request: AuthenticatedHttpRequest) -> SupportStatusDict:
     if hasattr(request, "weblate_support_status"):
-        support_status = request.weblate_support_status
+        support_status: SupportStatusDict = request.weblate_support_status
     else:
         support_status = cache.get(SUPPORT_STATUS_CACHE_KEY)
         if support_status is None:
             support_status_instance = SupportStatus.objects.get_current()
-            support_status: SupportStatusDict = {
+            support_status = {
                 "has_support": support_status_instance.name != "community",
                 "in_limits": support_status_instance.in_limits,
             }
diff --git a/weblate/wladmin/sites.py b/weblate/wladmin/sites.py
index 9f993c711bea..225a7cc332c8 100644
--- a/weblate/wladmin/sites.py
+++ b/weblate/wladmin/sites.py
@@ -12,7 +12,7 @@
 from django.utils.translation import gettext, gettext_lazy
 
 if TYPE_CHECKING:
-    from weblate.auth.models import AuthenticatedHttpRequest
+    from django.http import HttpRequest
 
 
 class WeblateAdminSite(AdminSite):
@@ -38,7 +38,7 @@ def site_url(self):
             return settings.URL_PREFIX
         return "/"
 
-    def each_context(self, request: AuthenticatedHttpRequest):
+    def each_context(self, request: HttpRequest):
         from weblate.wladmin.models import ConfigurationError
 
         result = super().each_context(request)
diff --git a/weblate/wladmin/views.py b/weblate/wladmin/views.py
index a4597b0695d0..aa0056dc92be 100644
--- a/weblate/wladmin/views.py
+++ b/weblate/wladmin/views.py
@@ -50,6 +50,7 @@
 from weblate.utils.version import GIT_LINK, GIT_REVISION
 from weblate.utils.views import show_form_errors
 from weblate.vcs.ssh import (
+    KeyType,
     add_host_key,
     can_generate_key,
     generate_ssh_key,
@@ -322,9 +323,8 @@ def performance(request: AuthenticatedHttpRequest) -> HttpResponse:
 
 @management_access
 def ssh_key(request: AuthenticatedHttpRequest) -> HttpResponse:
-    filename, data = get_key_data_raw(
-        key_type=request.GET.get("type", "rsa"), kind="private"
-    )
+    key_type = cast(KeyType, request.GET.get("type", "rsa"))
+    filename, data = get_key_data_raw(key_type=key_type, kind="private")
     if data is None:
         raise Http404
 
@@ -345,7 +345,8 @@ def ssh(request: AuthenticatedHttpRequest) -> HttpResponse:
 
     # Generate key if it does not exist yet
     if can_generate and action == "generate":
-        generate_ssh_key(request, key_type=request.POST.get("type", "rsa"))
+        key_type = cast(KeyType, request.POST.get("type", "rsa"))
+        generate_ssh_key(request, key_type=key_type)
         return redirect("manage-ssh")
 
     # Read key data if it exists
@@ -429,14 +430,14 @@ def users_check(request: AuthenticatedHttpRequest) -> HttpResponse:
     # Legacy links for care.weblate.org integration
     if "email" in data and "q" not in data:
         data = data.copy()
-        data["q"] = data["email"]
+        data.setlist("q", data.getlist("email"))
     form = AdminUserSearchForm(data)
 
     user_list = None
     if form.is_valid():
-        user_list = User.objects.search(
-            form.cleaned_data.get("q", ""), parser=form.fields["q"].parser
-        )[:2]
+        parser = getattr(form.fields["q"], "parser", "unit")
+        query = form.cleaned_data.get("q", "")
+        user_list = User.objects.search(query, parser=parser)[:2]
         if user_list.count() != 1:
             return redirect_param(
                 "manage-users", "?q={}".format(quote(form.cleaned_data["q"]))