diff --git a/package.json b/package.json
index 8079dfc..eab4ff8 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,8 @@
     "prismarine-nbt": "^1.4.0",
     "prismarine-recipe": "^1.1.0",
     "typescript": "^4.1.3",
-    "vec3": "^0.1.7"
+    "vec3": "^0.1.7",
+    "xstate": "^4.16.0"
   },
   "files": [
     "lib/**/*"