diff --git a/package.json b/package.json
index 9fc0a9a..590c410 100644
--- a/package.json
+++ b/package.json
@@ -40,6 +40,7 @@
 		"LICENSE-MIT.txt",
 		"rewrite-pattern.js",
 		"data/character-class-escape-sets.js",
+		"data/i-bmp-mappings.js",
 		"data/iu-mappings.js"
 	],
 	"scripts": {