diff --git a/.drone.yml b/.drone.yml
index 20a1d67..9c6f4d4 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -55,6 +55,11 @@ workspace:
   path: /drone/grow
 
 steps:
+- name: yarn install
+  image: node:latest
+  commands:
+  - yarn install
+
 - name: Build
   image: node:latest
   commands: