diff --git a/README.md b/README.md
index 2be56bb..39ea590 100644
--- a/README.md
+++ b/README.md
@@ -28,6 +28,8 @@ This repository contains an implementation of an API to analyze synthesized DDC
 
 ## Install
 
+You will need Node.js version 14.17 or later.
+
 ~~~bash
 git clone https://github.com/gbv/coli-ana.git
 cd coli-ana
diff --git a/package-lock.json b/package-lock.json
index 4d35886..6f99d85 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -45,7 +45,7 @@
         "vite": "^2.7.13"
       },
       "engines": {
-        "node": ">=12"
+        "node": ">=14.17"
       }
     },
     "node_modules/@antfu/install-pkg": {
diff --git a/package.json b/package.json
index d8e2417..6bd14b9 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
   "main": "server.js",
   "type": "module",
   "engines": {
-    "node": ">=12"
+    "node": ">=14.17"
   },
   "scripts": {
     "test": "NODE_ENV=test mocha --exit --timeout 10000 --slow 2000",