diff --git a/.npmrc b/.npmrc
new file mode 100644
index 00000000..b6f27f13
--- /dev/null
+++ b/.npmrc
@@ -0,0 +1 @@
+engine-strict=true
diff --git a/package-lock.json b/package-lock.json
index 7c6c23b6..c7ef802a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -80,6 +80,9 @@
         "prettier": "^3.0.0",
         "tsx": "^3.12.7",
         "typescript": "^5.0.4"
+      },
+      "engines": {
+        "node": ">=18.14"
       }
     },
     "node_modules/@clack/core": {
diff --git a/package.json b/package.json
index 08ab2d60..4f9f109b 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,9 @@
     "test": "tsx ./quartz/util/path.test.ts",
     "profile": "0x -D prof ./quartz/bootstrap-cli.mjs build --concurrency=1"
   },
+  "engines": {
+    "node": ">=18.14"
+  },
   "keywords": [
     "site generator",
     "ssg",