diff --git a/packages/cli/package.json b/packages/cli/package.json
index d5e5ddfa..47cde5c0 100644
--- a/packages/cli/package.json
+++ b/packages/cli/package.json
@@ -19,6 +19,9 @@
     "devtools"
   ],
   "type": "module",
+  "engines": {
+    "node": ">=20"
+  },
   "bin": {
     "sh1pt": "./bin/sh1pt.js"
   },
diff --git a/packages/core/package.json b/packages/core/package.json
index ff0e2ef5..87141d06 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -17,6 +17,9 @@
     "adapter"
   ],
   "type": "module",
+  "engines": {
+    "node": ">=20"
+  },
   "main": "./dist/index.js",
   "types": "./dist/index.d.ts",
   "exports": {
diff --git a/packages/policy/package.json b/packages/policy/package.json
index aa6351ae..7b371af9 100644
--- a/packages/policy/package.json
+++ b/packages/policy/package.json
@@ -17,6 +17,9 @@
     "lint"
   ],
   "type": "module",
+  "engines": {
+    "node": ">=20"
+  },
   "main": "./dist/index.js",
   "types": "./dist/index.d.ts",
   "exports": {