diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 45c18726..fa60aa38 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -7,10 +7,9 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
     - uses: actions/checkout@v4
-    - name: Set Node.js 16.x
-      uses: actions/setup-node@v4
+    - uses: actions/setup-node@v4
       with:
-        node-version: 16.x
+        node-version-file: .node-version
     - name: "Install"
       run: |
         npm install
@@ -32,10 +31,9 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
     - uses: actions/checkout@v4
-    - name: Set Node.js 16.x
-      uses: actions/setup-node@v4
+    - uses: actions/setup-node@v4
       with:
-        node-version: 16.x
+        node-version-file: .node-version
     - name: "Build action for test"
       run: |
         npm install
diff --git a/.node-version b/.node-version
new file mode 100644
index 00000000..209e3ef4
--- /dev/null
+++ b/.node-version
@@ -0,0 +1 @@
+20
diff --git a/README.md b/README.md
index 490942ff..79df18d5 100644
--- a/README.md
+++ b/README.md
@@ -42,7 +42,7 @@ on:
 
 jobs:
   is_locked:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     id: is_locked
     steps:
       - uses: actions/checkout@v4