diff --git a/packages/@modelfusion-cost-calculator/package.json b/packages/@modelfusion-cost-calculator/package.json
index 8d04a950..c76ad116 100644
--- a/packages/@modelfusion-cost-calculator/package.json
+++ b/packages/@modelfusion-cost-calculator/package.json
@@ -1,6 +1,7 @@
 {
   "name": "@modelfusion/cost-calculator",
   "description": "A calculator for the API usage costs of AI models (text, image, speech, transcription, etc.) for OpenAI and other providers.",
+  "version": "0.1.0",
   "author": "Lars Grammel",
   "license": "MIT",
   "keywords": [