diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ce3d8ff..6312f05 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -18,7 +18,7 @@ pages:
   variables:
     GA_PROP: $PROD_GA_PROPERTY
   script:
-  - gulp build
+  - yarn gulp build
   - gzip -k -6 $(find public/ -type f)
   artifacts:
     paths: