diff --git a/packages/app/e2e/smoke/session-timeline.spec.ts b/packages/app/e2e/smoke/session-timeline.spec.ts
index 1c3375ac4ef..d5330ac7d92 100644
--- a/packages/app/e2e/smoke/session-timeline.spec.ts
+++ b/packages/app/e2e/smoke/session-timeline.spec.ts
@@ -33,6 +33,7 @@ test.describe("smoke: session timeline", () => {
   test("keeps the visible message fixed while prepending history", async ({ page }) => {
     const requests: { before?: string; phase: "start" | "end"; at: number }[] = []
     await mockOpenCodeServer(page, {
+      protocol: "v2",
       sessions: fixture.sessions,
       provider: fixture.provider,
       directory: fixture.directory,
@@ -91,6 +92,7 @@ test.describe("smoke: session timeline", () => {
 
   test("preserves the timeline gap above the composer", async ({ page }) => {
     await mockOpenCodeServer(page, {
+      protocol: "v2",
       sessions: fixture.sessions,
       provider: fixture.provider,
       directory: fixture.directory,
@@ -117,6 +119,7 @@ test.describe("smoke: session timeline", () => {
 
   test("paints cached session tabs at the latest message", async ({ page }) => {
     await mockOpenCodeServer(page, {
+      protocol: "v2",
       sessions: fixture.sessions,
       provider: fixture.provider,
       directory: fixture.directory,
@@ -242,6 +245,7 @@ test.describe("smoke: session timeline", () => {
 
   test("paints a cold session tab at the latest message", async ({ page }) => {
     await mockOpenCodeServer(page, {
+      protocol: "v2",
       sessions: fixture.sessions,
       provider: fixture.provider,
       directory: fixture.directory,
@@ -320,6 +324,7 @@ test.describe("smoke: session timeline", () => {
   test("renders seeded timeline in order while paging through history", async ({ page }) => {
     const errors = trackPageErrors(page)
     await mockOpenCodeServer(page, {
+      protocol: "v2",
       sessions: fixture.sessions,
       provider: fixture.provider,
       directory: fixture.directory,
diff --git a/packages/app/e2e/utils/mock-server.ts b/packages/app/e2e/utils/mock-server.ts
index 2cd7d8defd1..a067a22369b 100644
--- a/packages/app/e2e/utils/mock-server.ts
+++ b/packages/app/e2e/utils/mock-server.ts
@@ -80,7 +80,7 @@ export async function mockOpenCodeServer(page: Page, config: MockServerConfig) {
       )
     }
     if (path === "/global/health")
-      return config.protocol === "v2" ? json(route, {}, undefined, 404) : json(route, { healthy: true })
+      return config.protocol === "v2" ? json(route, {}) : json(route, { healthy: true })
     if (path === "/api/health" && config.protocol === "v2")
       return json(route, { healthy: true, version: "2.0.0", pid: 1 })
     if (path === "/experimental/capabilities") return json(route, { backgroundSubagents: true })