diff --git a/scripts/build-wasm.sh b/scripts/build-wasm.sh
index 6ec240e..23f4438 100755
--- a/scripts/build-wasm.sh
+++ b/scripts/build-wasm.sh
@@ -15,5 +15,6 @@ mv index.js index.mjs
 
 jq '.type="module"' package.json | jq . > tmp && mv tmp package.json
 jq '.module="./index.mjs"' package.json | jq . > tmp && mv tmp package.json
+jq '.files += ["index.mjs"]' package.json | jq . > tmp && mv tmp package.json
 
 popd || exit