diff --git a/test-setup.ts b/test-setup.ts
index 6fbecdd57..4ec3e42eb 100644
--- a/test-setup.ts
+++ b/test-setup.ts
@@ -1,3 +1,4 @@
+/// <reference types="bun-types" />
 import { afterEach, beforeEach, mock } from "bun:test"
 import { rmSync } from "node:fs"
 import { _resetForTesting as resetClaudeSessionState } from "./src/features/claude-code-session-state/state"