diff --git a/packages/app/universal-testing-utils/src/MswHelper.spec.ts b/packages/app/universal-testing-utils/src/MswHelper.spec.ts
index 51533d6b3..24a441756 100644
--- a/packages/app/universal-testing-utils/src/MswHelper.spec.ts
+++ b/packages/app/universal-testing-utils/src/MswHelper.spec.ts
@@ -1,9 +1,14 @@
 import { mapRouteToPath } from '@lokalise/api-contracts'
-import { sendByGetRoute, sendByPayloadRoute } from '@lokalise/frontend-http-client'
+import {
+  sendByDeleteRoute,
+  sendByGetRoute,
+  sendByPayloadRoute,
+} from '@lokalise/frontend-http-client'
 import { setupServer } from 'msw/node'
 import { afterAll, afterEach, beforeEach, describe, expect, it } from 'vitest'
 import wretch from 'wretch'
 import {
+  deleteContract,
   getContract,
   getContractWithPathParams,
   getContractWithQueryParams,
@@ -248,6 +253,23 @@ describe('MswHelper', () => {
             `)
     })
 
+    it('mocks POST request custom void implementation', async () => {
+      const mock = vi.fn()
+
+      mswHelper.mockValidResponseWithImplementation(deleteContract, server, {
+        handleRequest: () => {
+          mock()
+        },
+      })
+
+      const response = await sendByDeleteRoute(wretchClient, deleteContract, {
+        pathParams: { userId: ':userId' },
+      })
+
+      expect(mock).toHaveBeenCalledOnce()
+      expect(response).toMatchInlineSnapshot('null')
+    })
+
     it('mocks POST request with path params with custom implementation', async () => {
       const mock = vi.fn()
 
diff --git a/packages/app/universal-testing-utils/src/MswHelper.ts b/packages/app/universal-testing-utils/src/MswHelper.ts
index 7c194141e..58b73aab9 100644
--- a/packages/app/universal-testing-utils/src/MswHelper.ts
+++ b/packages/app/universal-testing-utils/src/MswHelper.ts
@@ -1,5 +1,6 @@
 import {
   type CommonRouteDefinition,
+  type DeleteRouteDefinition,
   type InferSchemaInput,
   type InferSchemaOutput,
   type PayloadRouteDefinition,
@@ -151,7 +152,8 @@ export class MswHelper {
           IsNonJSONResponseExpected,
           IsEmptyResponseExpected
         >
-      | PayloadRouteDefinition<InferSchemaOutput<PathParamsSchema>, RequestBodySchema>,
+      | PayloadRouteDefinition<InferSchemaOutput<PathParamsSchema>, RequestBodySchema>
+      | DeleteRouteDefinition<InferSchemaOutput<PathParamsSchema>, RequestBodySchema>,
     server: SetupServerApi,
     params: PathParamsSchema extends undefined
       ? MockWithImplementationParamsNoPath<
@@ -177,20 +179,21 @@ export class MswHelper {
 
     server.use(
       http[method](resolvedPath, async (requestInfo) => {
-        return HttpResponse.json(
-          await params.handleRequest(
-            requestInfo as Parameters<
-              HttpResponseResolver<
-                InferSchemaInput<PathParamsSchema>,
-                InferSchemaInput<RequestBodySchema>,
-                InferSchemaInput<ResponseBodySchema>
-              >
-            >[0],
-          ),
-          {
-            status: params.responseCode,
-          },
+        const response = await params.handleRequest(
+          requestInfo as Parameters<
+            HttpResponseResolver<
+              InferSchemaInput<PathParamsSchema>,
+              InferSchemaInput<RequestBodySchema>,
+              InferSchemaInput<ResponseBodySchema>
+            >
+          >[0],
         )
+
+        if (!response) return new HttpResponse(null, { status: params.responseCode })
+
+        return HttpResponse.json(response, {
+          status: params.responseCode,
+        })
       }),
     )
   }
diff --git a/packages/app/universal-testing-utils/test/testContracts.ts b/packages/app/universal-testing-utils/test/testContracts.ts
index 952a76a68..eac061983 100644
--- a/packages/app/universal-testing-utils/test/testContracts.ts
+++ b/packages/app/universal-testing-utils/test/testContracts.ts
@@ -1,4 +1,4 @@
-import { buildGetRoute, buildPayloadRoute } from '@lokalise/api-contracts'
+import { buildDeleteRoute, buildGetRoute, buildPayloadRoute } from '@lokalise/api-contracts'
 import { z } from 'zod'
 
 const REQUEST_BODY_SCHEMA = z.object({
@@ -34,6 +34,15 @@ export const getContract = buildGetRoute({
   pathResolver: () => '/',
 })
 
+export const deleteContract = buildDeleteRoute({
+  successResponseBodySchema: z.void(),
+  description: 'some description',
+  responseSchemasByStatusCode: {
+    201: z.void(),
+  },
+  pathResolver: () => '/',
+})
+
 export const getContractWithQueryParams = buildGetRoute({
   successResponseBodySchema: RESPONSE_BODY_SCHEMA,
   description: 'some description',