diff --git a/test/runner.test.ts b/test/runner.test.ts
index 51e95b01..7fdd87b0 100644
--- a/test/runner.test.ts
+++ b/test/runner.test.ts
@@ -29,6 +29,10 @@ import { Workspace } from "../src/runner/workspace";
 import { tempDir } from "./fixture";
 
 const posix = test.skipIf(process.platform === "win32");
+// The runner tests drive real git checkouts. On the land gate's host under load (2026-11-01), the
+// large-conflict continuation took 6.4 s and failed vitest's 5 s default, ejecting a batch of
+// unrelated PRs (moq-dev/quest#363, #365).
+vi.setConfig({ testTimeout: 30_000 });
 
 function git(dir: string, ...args: string[]): string {
 	return execFileSync("git", ["-C", dir, ...args], {