diff --git a/scripts/prepare-package-json.sh b/scripts/prepare-package-json.sh
index 37dd2f5..b4cb364 100755
--- a/scripts/prepare-package-json.sh
+++ b/scripts/prepare-package-json.sh
@@ -5,6 +5,6 @@ set -o nounset
 set -o pipefail
 set -x
 
-jq '{name, version, type, dependencies, module, main, types, exports, publishConfig}' package.json > package.json.tmp
+jq '{name, version, type, dependencies, module, main, types, exports, publishConfig, files}' package.json > package.json.tmp
 cp package.json package.json.private
 mv package.json.tmp package.json