diff --git a/.drone.yml b/.drone.yml
index 4b2fabb..c231a32 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -25,7 +25,7 @@ steps:
       - bundle install
       - yarn config set cache-folder /cache/.yarn-cache
       - yarn global add gulp-cli
-      - yarn install --pure-lockfile
+      - yarn install --frozen-lockfile
       - gulp build
   - name: rebuild-cache
     privileged: true