diff --git a/build.sh b/build.sh
index 2f39813bd4c9f..ffde3dcbd76ec 100755
--- a/build.sh
+++ b/build.sh
@@ -86,7 +86,7 @@ concurrency=$(node -p 'Math.max(1, require("os").cpus().length - 1)')
 
 echo "============================================================================================="
 echo "building..."
-time lerna run $bail --stream --concurrency=$concurrency $runtarget || fail
+time npx lerna run $bail --stream --concurrency=$concurrency $runtarget || fail
 
 if [ "$check_compat" == "true" ]; then
   /bin/bash scripts/check-api-compatibility.sh