diff --git a/plugins-external/faker/src/index.ts b/plugins-external/faker/src/index.ts
index 4299734d..77f86831 100755
--- a/plugins-external/faker/src/index.ts
+++ b/plugins-external/faker/src/index.ts
@@ -29,6 +29,7 @@ const modules = [
 
 function normalizeResult(result: unknown): string {
   if (typeof result === 'string') return result;
+  if (result instanceof Date) return result.toISOString();
   return JSON.stringify(result);
 }
 
diff --git a/plugins-external/faker/tests/init.test.ts b/plugins-external/faker/tests/init.test.ts
index e344e5ae..823188a9 100644
--- a/plugins-external/faker/tests/init.test.ts
+++ b/plugins-external/faker/tests/init.test.ts
@@ -9,4 +9,18 @@ describe('template-function-faker', () => {
     // accidental additions, removals, or renames across faker upgrades.
     expect(names).toMatchSnapshot();
   });
+
+  it('renders date results as unquoted ISO strings', async () => {
+    const { plugin } = await import('../src/index');
+    const fn = plugin.templateFunctions?.find((fn) => fn.name === 'faker.date.future');
+
+    expect(fn?.onRender).toBeTypeOf('function');
+
+    const result = await fn!.onRender!(
+      {} as Parameters<NonNullable<typeof fn.onRender>>[0],
+      { values: {} } as Parameters<NonNullable<typeof fn.onRender>>[1],
+    );
+
+    expect(result).toMatch(/^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}Z$/);
+  });
 });