diff --git a/README.md b/README.md
index 091a385..728d6df 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,10 @@ TypeScript SDK for [OpenDecree](https://github.com/opendecree/decree) -- schema-
 
 > **Alpha** -- This SDK is under active development. APIs and behavior may change without notice between versions.
 
+## Requirements
+
+- Node.js **≥ 20** (ESM-only package — CommonJS is not supported)
+
 ## Install
 
 ```bash
diff --git a/package.json b/package.json
index 7cedb3b..0f4257c 100644
--- a/package.json
+++ b/package.json
@@ -8,8 +8,10 @@
   "exports": {
     ".": {
       "types": "./dist/index.d.ts",
-      "import": "./dist/index.js"
-    }
+      "import": "./dist/index.js",
+      "default": "./dist/index.js"
+    },
+    "./package.json": "./package.json"
   },
   "files": [
     "dist",