diff --git a/.drone.yml b/.drone.yml
index d076662..884d4c4 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -7,6 +7,8 @@ steps:
   image: yarnpkg/node-yarn
   commands:
   - yarn install
+  - cd server && yarn install
+  - cd client && yarn install
 
 - name: back-end test
   image: yarnpkg/node-yarn