diff --git a/packages/cli/test/acp/service-lifecycle.test.ts b/packages/cli/test/acp/service-lifecycle.test.ts
index 35a46a0ee2f..2fc39b778ce 100644
--- a/packages/cli/test/acp/service-lifecycle.test.ts
+++ b/packages/cli/test/acp/service-lifecycle.test.ts
@@ -136,7 +136,7 @@ describe("acp service lifecycle", () => {
       method: "POST",
       path: "/api/session/ses_loaded/fork",
       query: {},
-      body: {},
+      body: { boundary: { type: "through" } },
     })
   })