4 files changed, 48 insertions, 1 deletions
diff --git a/app/graphql/mutations/issues/base.rb b/app/graphql/mutations/issues/base.rb
index 7c545c3eb00..529d48f3cd0 100644
--- a/app/graphql/mutations/issues/base.rb
+++ b/app/graphql/mutations/issues/base.rb
@@ -11,7 +11,7 @@ module Mutations
 
       argument :iid, GraphQL::STRING_TYPE,
                required: true,
-               description: "The iid of the issue to mutate"
+               description: "The IID of the issue to mutate"
 
       field :issue,
             Types::IssueType,
diff --git a/app/graphql/mutations/issues/set_assignees.rb b/app/graphql/mutations/issues/set_assignees.rb
new file mode 100644
index 00000000000..a4d1c755b53
--- /dev/null
+++ b/app/graphql/mutations/issues/set_assignees.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+module Mutations
+  module Issues
+    class SetAssignees < Base
+      graphql_name 'IssueSetAssignees'
+
+      include Assignable
+
+      def update_service_class
+        ::Issues::UpdateService
+      end
+    end
+  end
+end
diff --git a/app/graphql/mutations/issues/set_subscription.rb b/app/graphql/mutations/issues/set_subscription.rb
new file mode 100644
index 00000000000..a04c8f5ba2d
--- /dev/null
+++ b/app/graphql/mutations/issues/set_subscription.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+module Mutations
+  module Issues
+    class SetSubscription < Base
+      graphql_name 'IssueSetSubscription'
+
+      include ResolvesSubscription
+    end
+  end
+end
diff --git a/app/graphql/mutations/issues/update.rb b/app/graphql/mutations/issues/update.rb
index 7f6d9b0f988..cc03d32731b 100644
--- a/app/graphql/mutations/issues/update.rb
+++ b/app/graphql/mutations/issues/update.rb
@@ -25,6 +25,27 @@ module Mutations
                required: false,
                description: copy_field_description(Types::IssueType, :confidential)
 
+      argument :locked,
+               GraphQL::BOOLEAN_TYPE,
+               as: :discussion_locked,
+               required: false,
+               description: copy_field_description(Types::IssueType, :discussion_locked)
+
+      argument :add_label_ids,
+               [GraphQL::ID_TYPE],
+               required: false,
+               description: 'The IDs of labels to be added to the issue.'
+
+      argument :remove_label_ids,
+               [GraphQL::ID_TYPE],
+               required: false,
+               description: 'The IDs of labels to be removed from the issue.'
+
+      argument :milestone_id,
+               GraphQL::ID_TYPE,
+               required: false,
+               description: 'The ID of the milestone to be assigned, milestone will be removed if set to null.'
+
       def resolve(project_path:, iid:, **args)
         issue = authorized_find!(project_path: project_path, iid: iid)
         project = issue.project