diff --git a/frontend/cypress/e2e/project/prepareProjects.ts b/frontend/cypress/e2e/project/prepareProjects.ts
index 27c8b20df..d9ed2cd2d 100644
--- a/frontend/cypress/e2e/project/prepareProjects.ts
+++ b/frontend/cypress/e2e/project/prepareProjects.ts
@@ -43,7 +43,7 @@ export function createProjects() {
 	return projects
 }
 
-export function prepareProjects(setProjects = (...args: any[]) => {
+export function prepareProjects(setProjects = (..._: unknown[]) => {
 }) {
 	beforeEach(() => {
 		const projects = createProjects()
diff --git a/frontend/cypress/support/e2e.ts b/frontend/cypress/support/e2e.ts
index 7b0c56d18..fe29a9100 100644
--- a/frontend/cypress/support/e2e.ts
+++ b/frontend/cypress/support/e2e.ts
@@ -5,6 +5,6 @@ import '@4tw/cypress-drag-drop'
 // see https://github.com/cypress-io/cypress/issues/702#issuecomment-587127275
 Cypress.on('window:before:load', (win) => {
 	// disable service workers
-	// @ts-ignore
+	// @ts-expect-error __proto__ has no types
 	delete win.navigator.__proto__.ServiceWorker
 })
\ No newline at end of file
diff --git a/frontend/src/modelTypes/ITaskBucket.ts b/frontend/src/modelTypes/ITaskBucket.ts
index a4f2027ec..b76555eea 100644
--- a/frontend/src/modelTypes/ITaskBucket.ts
+++ b/frontend/src/modelTypes/ITaskBucket.ts
@@ -9,6 +9,6 @@ export interface ITaskBucket extends IAbstract {
 	bucketId: IBucket['id']
 	projectViewId: IProjectView['id']
 	projectId: IProject['id']
-	task: ?ITask
-	bucket: ?IBucket
+	task: ITask | null | undefined
+	bucket: IBucket | null | undefined
 }