diff --git a/cli/package-lock.json b/cli/package-lock.json
index ff57bb64..3f4e6885 100644
--- a/cli/package-lock.json
+++ b/cli/package-lock.json
@@ -18,6 +18,9 @@
       "bin": {
         "cli": "src/index.js",
         "squoosh-cli": "src/index.js"
+      },
+      "engines": {
+        "node": " ^12.20.2 || ^14.13.1 || ^16.0.0 "
       }
     },
     "node_modules/@squoosh/lib": {
diff --git a/cli/package.json b/cli/package.json
index 72596725..354ce9c9 100644
--- a/cli/package.json
+++ b/cli/package.json
@@ -19,6 +19,9 @@
   "keywords": [],
   "author": "Google Chrome Developers <chromium-dev@google.com>",
   "license": "Apache-2.0",
+  "engines": {
+    "node": " ^12.20.2 || ^14.13.1 || ^16.0.0 "
+  },
   "dependencies": {
     "@squoosh/lib": "^0.2.0",
     "commander": "^7.2.0",
diff --git a/libsquoosh/package.json b/libsquoosh/package.json
index 4eab611b..36289ccd 100644
--- a/libsquoosh/package.json
+++ b/libsquoosh/package.json
@@ -18,6 +18,9 @@
     "url": "https://github.com/GoogleChromeLabs/squoosh.git"
   },
   "license": "Apache-2.0",
+  "engines": {
+    "node": " ^12.5.0 || ^14.0.0 || ^16.0.0 "
+  },
   "dependencies": {
     "web-streams-polyfill": "^3.0.3"
   },