diff --git a/.github/workflows/ci-cd.yml b/.github/workflows/ci-cd.yml
index 4e4e9435..da3ec164 100644
--- a/.github/workflows/ci-cd.yml
+++ b/.github/workflows/ci-cd.yml
@@ -29,10 +29,10 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      - name: install node 16
+      - name: install node 18
         uses: actions/setup-node@v3
         with:
-          node-version: 16.x
+          node-version: 18.x
 
       - name: install and build
         run: yarn install && yarn build
@@ -73,10 +73,10 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: install node 16
+      - name: install node 18
         uses: actions/setup-node@v3
         with:
-          node-version: 16.x
+          node-version: 18.x
 
       - name: analyze ${{ matrix.lib }}
         id: analyze
diff --git a/package.json b/package.json
index 2347cf2c..bdd78725 100644
--- a/package.json
+++ b/package.json
@@ -7,6 +7,9 @@
     "email": "rotorsoft@outlook.com"
   },
   "license": "MIT",
+  "engines": {
+    "node": ">=18"
+  },
   "repository": {
     "type": "git",
     "url": "git+https://github.com/rotorsoft/eventually-monorepo.git"
diff --git a/services/calculator/src/__tests__/calculator.express.proxy.spec.ts b/services/calculator/src/__tests__/calculator.express.proxy.spec.ts
index 3da821fe..ffa5ddbe 100644
--- a/services/calculator/src/__tests__/calculator.express.proxy.spec.ts
+++ b/services/calculator/src/__tests__/calculator.express.proxy.spec.ts
@@ -38,7 +38,6 @@ describe("calculator express app with proxy", () => {
     await broker().drain();
 
     const response = await proxy.load(Calculator, id);
-    console.log("???????????????????", response);
     expect(response?.result?.state).toEqual({
       left: "3.3",
       result: 3.3