diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 2109fa86..9c329a7a 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -12,7 +12,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [18.x]
+        node-version: [20.x]
 
     steps:
       - uses: actions/checkout@v4
@@ -20,6 +20,7 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
+          cache: npm
       - name: Install dependencies
         run: npm ci
       - name: Compile
diff --git a/.github/workflows/deploy-playground.yml b/.github/workflows/deploy-playground.yml
index 3d440eea..baa7a3bf 100644
--- a/.github/workflows/deploy-playground.yml
+++ b/.github/workflows/deploy-playground.yml
@@ -10,7 +10,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [18.x]
+        node-version: [20.x]
 
     steps:
       - uses: actions/checkout@v4
@@ -18,6 +18,7 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
+          cache: npm
       - name: Build Playground
         run: |
           git config --global user.email "yosuke.kurami@gmai.com"
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 15c6ee8e..a682ebef 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -8,7 +8,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [18.x]
+        node-version: [20.x]
 
     steps:
       - uses: actions/checkout@v4
@@ -16,6 +16,7 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
+          cache: npm
       - name: npm publish
         run: |
           echo "//registry.npmjs.org/:_authToken=${NPM_AUTH_TOKEN}" > ~/.npmrc