diff --git a/packages/env/package.json b/packages/env/package.json
index da0ca27..a6e6a98 100644
--- a/packages/env/package.json
+++ b/packages/env/package.json
@@ -23,6 +23,7 @@
   },
   "scripts": {
     "build": "tsc -p tsconfig.json",
+    "prepare": "npm run build",
     "typecheck": "tsc -p tsconfig.json --noEmit",
     "test": "tsx --test test/**/*.test.ts"
   },
diff --git a/packages/env/tsconfig.json b/packages/env/tsconfig.json
index ab87bf5..67276f8 100644
--- a/packages/env/tsconfig.json
+++ b/packages/env/tsconfig.json
@@ -5,6 +5,7 @@
     "outDir": "dist",
     "rootDir": "src",
     "declaration": true,
+    "emitDeclarationOnly": false,
     "sourceMap": true
   },
   "include": ["src"]