diff --git a/packages/lib/server-only/pdf/add-rejection-stamp-to-pdf.ts b/packages/lib/server-only/pdf/add-rejection-stamp-to-pdf.ts
index 47b372af9..f739cac44 100644
--- a/packages/lib/server-only/pdf/add-rejection-stamp-to-pdf.ts
+++ b/packages/lib/server-only/pdf/add-rejection-stamp-to-pdf.ts
@@ -2,7 +2,7 @@ import type { PDFDocument } from '@cantoo/pdf-lib';
 import { TextAlignment, rgb, setFontAndSize } from '@cantoo/pdf-lib';
 import fontkit from '@pdf-lib/fontkit';
 
-import { NEXT_PUBLIC_WEBAPP_URL } from '../../constants/app';
+import { NEXT_PRIVATE_INTERNAL_WEBAPP_URL } from '../../constants/app';
 import { getPageSize } from './get-page-size';
 
 /**
@@ -16,7 +16,7 @@ export async function addRejectionStampToPdf(
   const pages = pdfDoc.getPages();
   pdfDoc.registerFontkit(fontkit);
 
-  const fontBytes = await fetch(`${NEXT_PUBLIC_WEBAPP_URL()}/fonts/noto-sans.ttf`).then(
+  const fontBytes = await fetch(`${NEXT_PRIVATE_INTERNAL_WEBAPP_URL()}/fonts/noto-sans.ttf`).then(
     async (res) => res.arrayBuffer(),
   );
 
diff --git a/packages/lib/server-only/pdf/flatten-form.ts b/packages/lib/server-only/pdf/flatten-form.ts
index ccd80973f..728eb0fa7 100644
--- a/packages/lib/server-only/pdf/flatten-form.ts
+++ b/packages/lib/server-only/pdf/flatten-form.ts
@@ -14,7 +14,7 @@ import {
 } from '@cantoo/pdf-lib';
 import fontkit from '@pdf-lib/fontkit';
 
-import { NEXT_PUBLIC_WEBAPP_URL } from '../../constants/app';
+import { NEXT_PRIVATE_INTERNAL_WEBAPP_URL } from '../../constants/app';
 
 export const removeOptionalContentGroups = (document: PDFDocument) => {
   const context = document.context;
@@ -29,7 +29,7 @@ export const flattenForm = async (document: PDFDocument) => {
 
   const form = document.getForm();
 
-  const fontNoto = await fetch(`${NEXT_PUBLIC_WEBAPP_URL()}/fonts/noto-sans.ttf`).then(
+  const fontNoto = await fetch(`${NEXT_PRIVATE_INTERNAL_WEBAPP_URL()}/fonts/noto-sans.ttf`).then(
     async (res) => res.arrayBuffer(),
   );
 
diff --git a/packages/lib/server-only/pdf/insert-field-in-pdf-v1.ts b/packages/lib/server-only/pdf/insert-field-in-pdf-v1.ts
index a72558a07..e339c2b68 100644
--- a/packages/lib/server-only/pdf/insert-field-in-pdf-v1.ts
+++ b/packages/lib/server-only/pdf/insert-field-in-pdf-v1.ts
@@ -22,7 +22,7 @@ import { fromCheckboxValue } from '@documenso/lib/universal/field-checkbox';
 import { isSignatureFieldType } from '@documenso/prisma/guards/is-signature-field';
 import type { FieldWithSignature } from '@documenso/prisma/types/field-with-signature';
 
-import { NEXT_PUBLIC_WEBAPP_URL } from '../../constants/app';
+import { NEXT_PRIVATE_INTERNAL_WEBAPP_URL } from '../../constants/app';
 import {
   ZCheckboxFieldMeta,
   ZDateFieldMeta,
@@ -37,8 +37,12 @@ import { getPageSize } from './get-page-size';
 
 export const insertFieldInPDFV1 = async (pdf: PDFDocument, field: FieldWithSignature) => {
   const [fontCaveat, fontNoto] = await Promise.all([
-    fetch(`${NEXT_PUBLIC_WEBAPP_URL()}/fonts/caveat.ttf`).then(async (res) => res.arrayBuffer()),
-    fetch(`${NEXT_PUBLIC_WEBAPP_URL()}/fonts/noto-sans.ttf`).then(async (res) => res.arrayBuffer()),
+    fetch(`${NEXT_PRIVATE_INTERNAL_WEBAPP_URL()}/fonts/caveat.ttf`).then(async (res) =>
+      res.arrayBuffer(),
+    ),
+    fetch(`${NEXT_PRIVATE_INTERNAL_WEBAPP_URL()}/fonts/noto-sans.ttf`).then(async (res) =>
+      res.arrayBuffer(),
+    ),
   ]);
 
   const isSignatureField = isSignatureFieldType(field.type);
diff --git a/packages/lib/server-only/pdf/legacy-insert-field-in-pdf.ts b/packages/lib/server-only/pdf/legacy-insert-field-in-pdf.ts
index 9d6fa5445..e14c7a74b 100644
--- a/packages/lib/server-only/pdf/legacy-insert-field-in-pdf.ts
+++ b/packages/lib/server-only/pdf/legacy-insert-field-in-pdf.ts
@@ -15,7 +15,7 @@ import { fromCheckboxValue } from '@documenso/lib/universal/field-checkbox';
 import { isSignatureFieldType } from '@documenso/prisma/guards/is-signature-field';
 import type { FieldWithSignature } from '@documenso/prisma/types/field-with-signature';
 
-import { NEXT_PUBLIC_WEBAPP_URL } from '../../constants/app';
+import { NEXT_PRIVATE_INTERNAL_WEBAPP_URL } from '../../constants/app';
 import {
   ZCheckboxFieldMeta,
   ZDateFieldMeta,
@@ -30,8 +30,12 @@ import { getPageSize } from './get-page-size';
 
 export const legacy_insertFieldInPDF = async (pdf: PDFDocument, field: FieldWithSignature) => {
   const [fontCaveat, fontNoto] = await Promise.all([
-    fetch(`${NEXT_PUBLIC_WEBAPP_URL()}/fonts/caveat.ttf`).then(async (res) => res.arrayBuffer()),
-    fetch(`${NEXT_PUBLIC_WEBAPP_URL()}/fonts/noto-sans.ttf`).then(async (res) => res.arrayBuffer()),
+    fetch(`${NEXT_PRIVATE_INTERNAL_WEBAPP_URL()}/fonts/caveat.ttf`).then(async (res) =>
+      res.arrayBuffer(),
+    ),
+    fetch(`${NEXT_PRIVATE_INTERNAL_WEBAPP_URL()}/fonts/noto-sans.ttf`).then(async (res) =>
+      res.arrayBuffer(),
+    ),
   ]);
 
   const isSignatureField = isSignatureFieldType(field.type);