diff --git a/build-vocabulary.js b/build-vocabulary.js
index cd02560..48bb59a 100644
--- a/build-vocabulary.js
+++ b/build-vocabulary.js
@@ -2,4 +2,4 @@ require("@babel/register")({
   extensions: [".es6", ".es", ".jsx", ".js", ".mjs", ".ts", ".tsx"],
 });
 
-require("./lib/vocabulary").build();
+require("./lib/vocabulary-builder").build();
diff --git a/lib/vocabulary.ts b/lib/vocabulary-builder.ts
similarity index 100%
rename from lib/vocabulary.ts
rename to lib/vocabulary-builder.ts