diff --git a/packages/v2/backend/package.json b/packages/v2/backend/package.json
index c7030da4b0..fa4311f464 100644
--- a/packages/v2/backend/package.json
+++ b/packages/v2/backend/package.json
@@ -19,6 +19,6 @@
   "dependencies": {
     "@navikt/k9-klage-typescript-client": "1.0.20240513162434-997f3da",
     "@navikt/k9-sak-typescript-client": "1.0.20241028110915",
-    "@navikt/ung-sak-typescript-client": "0.1.20241220134118"
+    "@navikt/ung-sak-typescript-client": "0.1.20250103103622"
   }
 }
diff --git a/packages/v2/gui/src/prosess/ung-vedtak/UngVedtak.tsx b/packages/v2/gui/src/prosess/ung-vedtak/UngVedtak.tsx
index c289a20853..8941e7b644 100644
--- a/packages/v2/gui/src/prosess/ung-vedtak/UngVedtak.tsx
+++ b/packages/v2/gui/src/prosess/ung-vedtak/UngVedtak.tsx
@@ -1,8 +1,4 @@
-import {
-  behandlingResultatType,
-  type AksjonspunktDto,
-  type ForhåndsvisVedtaksbrevResponse,
-} from '@k9-sak-web/backend/ungsak/generated';
+import { behandlingResultatType, type AksjonspunktDto } from '@k9-sak-web/backend/ungsak/generated';
 import { FileSearchIcon } from '@navikt/aksel-icons';
 import { BodyShort, Box, Button, Fieldset, HStack, Label, VStack } from '@navikt/ds-react';
 import { CheckboxField, Form } from '@navikt/ft-form-hooks';
@@ -45,14 +41,13 @@ export const UngVedtak = ({ api, behandling, aksjonspunkter, submitCallback, vil
 
   const { refetch, isLoading: forhåndsvisningIsLoading } = useQuery({
     queryKey: ['forhandsvisVedtaksbrev', behandling.id],
-    queryFn: () =>
-      api.forhåndsvisVedtaksbrev(behandling.id).then((response: ForhåndsvisVedtaksbrevResponse) => {
-        // Create a URL object from the PDF blob
-        const fileURL = window.URL.createObjectURL(new Blob([response.data], { type: 'application/pdf' }));
-
-        // Open the PDF in a new tab
-        window.open(fileURL, '_blank');
-      }),
+    queryFn: async () => {
+      const response = await api.forhåndsvisVedtaksbrev(behandling.id);
+      // Create a URL object from the PDF blob
+      const fileURL = window.URL.createObjectURL(response);
+      // Open the PDF in a new tab
+      window.open(fileURL, '_blank');
+    },
     enabled: false,
   });
 
diff --git a/packages/v2/gui/src/prosess/ung-vedtak/UngVedtakBackendClient.ts b/packages/v2/gui/src/prosess/ung-vedtak/UngVedtakBackendClient.ts
index d08e11b6ee..78c29519ee 100644
--- a/packages/v2/gui/src/prosess/ung-vedtak/UngVedtakBackendClient.ts
+++ b/packages/v2/gui/src/prosess/ung-vedtak/UngVedtakBackendClient.ts
@@ -1,5 +1,4 @@
 import type { ForhåndsvisVedtaksbrevResponse, UngSakClient } from '@k9-sak-web/backend/ungsak/generated';
-import axios from 'axios';
 
 export default class UngVedtakBackendClient {
   #ungsak: UngSakClient;
@@ -9,16 +8,6 @@ export default class UngVedtakBackendClient {
   }
 
   async forhåndsvisVedtaksbrev(behandlingId: number): Promise<ForhåndsvisVedtaksbrevResponse> {
-    // return this.#ungsak.formidling.forhåndsvisVedtaksbrev({ behandlingId });
-    return axios.post(
-      'http://localhost:9005/ung/sak/api/formidling/vedtaksbrev/forhaandsvis',
-      { behandlingId },
-      {
-        headers: {
-          Accept: 'application/pdf',
-        },
-        responseType: 'blob'
-      },
-    );
+    return this.#ungsak.formidling.forhåndsvisVedtaksbrev({ behandlingId });
   }
 }
diff --git a/packages/v2/gui/src/storybook/mocks/FakeUngVedtakBackendApi.ts b/packages/v2/gui/src/storybook/mocks/FakeUngVedtakBackendApi.ts
index 4c1c29ec5a..02a12ad0d4 100644
--- a/packages/v2/gui/src/storybook/mocks/FakeUngVedtakBackendApi.ts
+++ b/packages/v2/gui/src/storybook/mocks/FakeUngVedtakBackendApi.ts
@@ -1,7 +1,8 @@
 import type { ForhåndsvisVedtaksbrevResponse } from '@k9-sak-web/backend/ungsak/generated';
+import { fakePdf } from './fakePdf.js';
 
 export class FakeUngVedtakBackendApi {
   async forhåndsvisVedtaksbrev(): Promise<ForhåndsvisVedtaksbrevResponse> {
-    return;
+    return fakePdf();
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 6424857cec..120fbfe969 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3935,7 +3935,7 @@ __metadata:
   dependencies:
     "@navikt/k9-klage-typescript-client": 1.0.20240513162434-997f3da
     "@navikt/k9-sak-typescript-client": 1.0.20241028110915
-    "@navikt/ung-sak-typescript-client": 0.1.20241220134118
+    "@navikt/ung-sak-typescript-client": 0.1.20250103103622
   languageName: unknown
   linkType: soft
 
@@ -5451,10 +5451,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@navikt/ung-sak-typescript-client@npm:0.1.20241220134118":
-  version: 0.1.20241220134118
-  resolution: "@navikt/ung-sak-typescript-client@npm:0.1.20241220134118::__archiveUrl=https%3A%2F%2Fnpm.pkg.github.com%2Fdownload%2F%40navikt%2Fung-sak-typescript-client%2F0.1.20241220134118%2F783667e56032d75cc5f1d69a86664a7e50e60d15"
-  checksum: 15bf6686d6b30485e90dbd113184bc75383e2e721cd772169cf9cd9e0b181d9d0a040a865bba5e321c10877d813de1ac0804c814a6efdf58663576b88c9fe1d6
+"@navikt/ung-sak-typescript-client@npm:0.1.20250103103622":
+  version: 0.1.20250103103622
+  resolution: "@navikt/ung-sak-typescript-client@npm:0.1.20250103103622::__archiveUrl=https%3A%2F%2Fnpm.pkg.github.com%2Fdownload%2F%40navikt%2Fung-sak-typescript-client%2F0.1.20250103103622%2F553036253ddfd19e6e781ebf1da4a736dd747039"
+  checksum: 1e1552188bd2e9f19e355e29e97f1ee6100dc7f6eb20e474ac49b38e6c57bdbe78f7041fd9c936351fc4c9f58e3f6321c2fff8f93225146ebacbdaa8a6ffbf8a
   languageName: node
   linkType: hard