diff --git a/scripts/build.sh b/scripts/build.sh
index b9b5c21..562f52e 100644
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -24,6 +24,7 @@ then
   [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
   nvm install $INPUT_NODE_VERSION
   npm install --location=global yarn
+  npm install -g yarn
   yarn install && yarn add compression
   yarn add  @magento/pwa-buildpack