diff --git a/packages/mosaic/src/commands/fleet-provision.spec.ts b/packages/mosaic/src/commands/fleet-provision.spec.ts
index 691814e..18799b0 100644
--- a/packages/mosaic/src/commands/fleet-provision.spec.ts
+++ b/packages/mosaic/src/commands/fleet-provision.spec.ts
@@ -3,11 +3,19 @@ import { constants } from 'node:fs';
 import { tmpdir } from 'node:os';
 import { dirname, join, resolve } from 'node:path';
 import { fileURLToPath } from 'node:url';
-import { afterEach, beforeEach, describe, expect, it } from 'vitest';
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
 import { loadFleetRoster } from './fleet.js';
 import { generateRoster, runProvision } from './fleet-provision.js';
 import { loadProfile } from './fleet-profiles.js';
 
+// These are INTEGRATION tests: each exercises real filesystem I/O — scanning the
+// committed framework/fleet persona library, rendering YAML, writing to a temp
+// mosaicHome, and round-tripping through the real roster parser. On a heavily
+// contended CI runner (the whole monorepo's suites run in parallel) that genuine
+// I/O can exceed vitest's 5s default even though it completes in ~400ms locally.
+// Give the legitimately I/O-bound work generous headroom so CI is deterministic.
+vi.setConfig({ testTimeout: 30_000 });
+
 // The real, committed library: packages/mosaic/src/commands -> framework/fleet.
 const frameworkFleet = resolve(
   dirname(fileURLToPath(import.meta.url)),