diff --git a/vite.config.js b/vite.config.js
index 9d50528..e59f417 100644
--- a/vite.config.js
+++ b/vite.config.js
@@ -43,5 +43,8 @@ export default defineConfig(({ command }) => ({
     globals: true,
     setupFiles: ['./tests/setup.js'],
     include: ['src/**/*.test.js', 'tests/**/*.test.js'],
+    // PBKDF2 (600k iterations) derivations are slow; don't let the default 5s
+    // per-test timeout flake the suite on slower CI hosts.
+    testTimeout: 30000,
   },
 }))