diff --git a/package.json b/package.json
index 5a2634f8e..26bb5f552 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
   "keywords": [
     "matrix-org"
   ],
-  "main": "./src/index.js",
+  "main": "./src/index.ts",
   "browser": "./lib/browser-index.js",
   "matrix_src_main": "./src/index.ts",
   "matrix_src_browser": "./src/browser-index.js",