diff --git a/package.json b/package.json
index a88ba26f5..b65594984 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,8 @@
   ],
   "files": [
     "dist",
-    "cli.js"
+    "cli.js",
+    "src/shims/"
   ],
   "main": "./dist/mercury.js",
   "bin": {