diff --git a/scripts/build_package.sh b/scripts/build_package.sh
index ba51b8a5..b536723f 100755
--- a/scripts/build_package.sh
+++ b/scripts/build_package.sh
@@ -21,13 +21,13 @@ if [[ $(pwd) != *"/packages/"* ]]; then
 fi
 
 # clean dist directory
-rm -rf dist/*
+# rm -rf dist/*
 
 # build typescript files
 tsc --build
 
 # copy .{md,json} files  (replace -q with -i to see itemized changes)
-rsync -am -q --include='*.md' --include='*.json' --include='*/' --exclude='*' ./src/ ./dist/src/
+rsync -aq --delete --include='*.md' --include='*.json' --include='*/' --exclude='*' ./src/ ./dist/src/
 
 # touch dist/.last_build
 touch dist/.last_build