diff --git a/.github/workflows/ci-on-commit.yml b/.github/workflows/ci-on-commit.yml
index 3b3798f..a76d7bb 100644
--- a/.github/workflows/ci-on-commit.yml
+++ b/.github/workflows/ci-on-commit.yml
@@ -14,6 +14,11 @@ jobs:
       - name: checkout
         uses: actions/checkout@v1
 
+      - uses: actions/setup-node@v1
+        with:
+          node-version: '16.x'
+          registry-url: 'https://registry.npmjs.org'
+
       - name: install
         run: npm install
 
diff --git a/.github/workflows/publish-on-tag.yml b/.github/workflows/publish-on-tag.yml
index f579f38..7c5e9a2 100644
--- a/.github/workflows/publish-on-tag.yml
+++ b/.github/workflows/publish-on-tag.yml
@@ -14,7 +14,7 @@ jobs:
 
       - uses: actions/setup-node@v1
         with:
-          node-version: '12.x'
+          node-version: '16.x'
           registry-url: 'https://registry.npmjs.org'
 
       - name: install
diff --git a/src/cache.integration.test.ts b/src/cache.integration.test.ts
index e3228dd..4d834c5 100644
--- a/src/cache.integration.test.ts
+++ b/src/cache.integration.test.ts
@@ -1,7 +1,6 @@
 import { promises as fs } from 'fs';
 import { sleep } from './utils/sleep';
 import { createCache, RESERVED_CACHE_KEY_FOR_VALID_KEYS } from './cache';
-import uuid from 'uuid';
 
 jest.setTimeout(60 * 1000);