diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4640919..4ab71df 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,7 +17,7 @@ jobs:
       - name: Use Node.js
         uses: actions/setup-node@v2
         with:
-          node-version: '16.x'
+          node-version: '18.x'
       - name: Install dependencies
         run: npm ci
       - name: Check formatting
@@ -30,7 +30,7 @@ jobs:
       - name: Use Node.js
         uses: actions/setup-node@v2
         with:
-          node-version: '16.x'
+          node-version: '18.x'
       - name: Install dependencies
         run: npm ci
       - name: Run eslint
@@ -43,7 +43,7 @@ jobs:
       - name: Use Node.js
         uses: actions/setup-node@v2
         with:
-          node-version: '16.x'
+          node-version: '18.x'
       - name: Install dependencies
         run: npm ci
       - name: Run tests
@@ -59,7 +59,7 @@ jobs:
       - name: Use Node.js
         uses: actions/setup-node@v2
         with:
-          node-version: '16.x'
+          node-version: '18.x'
       - name: Install dependencies
         run: npm ci
       - name: Check formatting
@@ -75,7 +75,7 @@ jobs:
       - name: Use Node.js
         uses: actions/setup-node@v2
         with:
-          node-version: '16.x'
+          node-version: '18.x'
       - name: Install dependencies
         run: npm ci
       - name: Run eslint
diff --git a/package-lock.json b/package-lock.json
index 7442fc0..0d7dc78 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -34,7 +34,7 @@
         "typescript": "^5.2.2"
       },
       "engines": {
-        "node": ">= 16"
+        "node": ">= 18"
       }
     },
     "node_modules/@aashutoshrathi/word-wrap": {
diff --git a/package.json b/package.json
index b273438..cc0fd41 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
     "test": "jest"
   },
   "engines": {
-    "node": ">= 16"
+    "node": ">= 18"
   },
   "devDependencies": {
     "@tsconfig/node16": "^16.1.1",
diff --git a/webif/package-lock.json b/webif/package-lock.json
index ab15f40..ff632ae 100644
--- a/webif/package-lock.json
+++ b/webif/package-lock.json
@@ -23,6 +23,9 @@
         "tslib": "^2.4.1",
         "typescript": "^5.0.0",
         "vite": "^5.0.0"
+      },
+      "engines": {
+        "node": ">= 18"
       }
     },
     "node_modules/@aashutoshrathi/word-wrap": {
diff --git a/webif/package.json b/webif/package.json
index a4e05ee..2f0996d 100644
--- a/webif/package.json
+++ b/webif/package.json
@@ -12,6 +12,9 @@
     "prettier": "prettier --write src/",
     "prettier-check": "prettier --check src/"
   },
+  "engines": {
+    "node": ">= 18"
+  },
   "devDependencies": {
     "@sveltejs/adapter-static": "^3.0.1",
     "@sveltejs/kit": "^2.5.0",